Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-33673

Parallel replica threads lockup when using many XA threads in bb-10.6-MDEV-31949_ver0

    XMLWordPrintable

Details

    Description

      Revisions:

      Baseline: 10.6.17 bde552aea348c3a99d7bb92805570aea16490fb0 (Optimized)
      Patched: bb-10.6-MDEV-31949_ver0: 10.6.18 5d1a254290f8203a8f2fc60d414c09fde6643493  (Optimized)
      

      Also verified that the issue does not exist on 10.6.18 567c0973591eb66797bb0f982f312b516f8fe82c (Opt), the revision just before the patch.
      mariadbd options:

      Master: --no-defaults --log_bin=binlog --binlog_format=ROW --max_connections=10000 --server_id=1
      Replica: --no-defaults --gtid_strict_mode=1 --relay-log=relaylog --slave-parallel-threads=3100 --slave-parallel-mode=aggressive --slave-parallel-max-queued=65536 --slave_transaction_retries=18446744073709547520 --innodb_lock_wait_timeout=120 --slave_run_triggers_for_rbr=LOGGING --slave_skip_errors=ALL --max_connections=10000 --server_id=2
      

      Sysbech prepare and run:

      sysbench --mysql-user=root --mysql-socket="${PWD}/socket.sock" --tables=1 --table_size=10000 --mysql-db=test --mysql-ignore-errors=1062,1213,1614,1205 --threads=3000 --time=0 ./replication_xa_sysbench_1.lua prepare
      sysbench --mysql-user=root --mysql-socket="${PWD}/socket.sock" --tables=1 --table_size=10000 --mysql-db=test --mysql-ignore-errors=1062,1213,1614,1205 --threads=3000 --time=0 ./replication_xa_sysbench_1.lua run &
      

      Lua script: replication_xa_sysbench_1.lua, attached.

      Leads to:
      Baseline (sample end of SHOW PROCESSLIST;):

      10.6.17 bde552aea348c3a99d7bb92805570aea16490fb0 (Optimized, Replica)

      ...
      | 2900 | system user |           | NULL | Slave_worker |    7 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2902 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2901 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2903 | system user |           | NULL | Slave_worker |    6 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2904 | system user |           | NULL | Slave_worker |    4 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2906 | system user |           | NULL | Slave_worker |   13 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2908 | system user |           | NULL | Slave_worker |    8 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2907 | system user |           | NULL | Slave_worker |   14 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2909 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2905 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2911 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2912 | system user |           | test | Slave_worker |    0 | Waiting for prior transaction to commit                           | XA COMMIT X'7869645f32333233',X'',1 |    0.000 |
      | 2915 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2916 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2917 | system user |           | NULL | Slave_worker |    9 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2918 | system user |           | NULL | Slave_worker |   16 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2913 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2919 | system user |           | test | Slave_worker |    0 | Waiting for prior transaction to commit                           | XA COMMIT X'7869645f32383338',X'',1 |    0.000 |
      | 2914 | system user |           | test | Slave_worker |    0 | Update_rows_log_event::ha_update_row(-1) on table `b_sessionmgmt` | NULL                                |    0.000 |
      | 2920 | system user |           | NULL | Slave_worker |    4 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2921 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2922 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2923 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2924 | system user |           | NULL | Slave_worker |    6 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2925 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2926 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2927 | system user |           | NULL | Slave_worker |    6 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2928 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2929 | system user |           | NULL | Slave_worker |   21 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2930 | system user |           | NULL | Slave_worker |    7 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2931 | system user |           | NULL | Slave_worker |    8 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2932 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2933 | system user |           | NULL | Slave_worker |   15 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2910 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2957 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2958 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2934 | system user |           | NULL | Slave_worker |    6 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2959 | system user |           | test | Slave_worker |    3 | Update_rows_log_event::ha_update_row(-1) on table `b_sessionmgmt` | NULL                                |    0.000 |
      | 2935 | system user |           | NULL | Slave_worker |   18 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2936 | system user |           | NULL | Slave_worker |   16 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2937 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2960 | system user |           | NULL | Slave_worker |    9 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2938 | system user |           | NULL | Slave_worker |   16 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2939 | system user |           | NULL | Slave_worker |   23 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2940 | system user |           | NULL | Slave_worker |    4 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2941 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2942 | system user |           | NULL | Slave_worker |   13 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2943 | system user |           | NULL | Slave_worker |   19 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2944 | system user |           | NULL | Slave_worker |   24 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2945 | system user |           | NULL | Slave_worker |    4 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2946 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2947 | system user |           | test | Slave_worker |    5 | Update_rows_log_event::ha_update_row(-1) on table `b_sessionmgmt` | NULL                                |    0.000 |
      | 2948 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2949 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2961 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2950 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2962 | system user |           | NULL | Slave_worker |    4 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2951 | system user |           | test | Slave_worker |    3 | Update_rows_log_event::find_row(-1) on table `b_sessionmgmt`      | NULL                                |    0.000 |
      | 2963 | system user |           | NULL | Slave_worker |   15 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2953 | system user |           | test | Slave_worker |    0 | Waiting for prior transaction to commit                           | XA COMMIT X'7869645f36',X'',1       |    0.000 |
      | 2964 | system user |           | NULL | Slave_worker |    6 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2965 | system user |           | NULL | Slave_worker |    9 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2966 | system user |           | test | Slave_worker |    2 | Waiting for prior transaction to commit                           | XA COMMIT X'7869645f373734',X'',1   |    0.000 |
      | 2967 | system user |           | NULL | Slave_worker |   11 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2968 | system user |           | NULL | Slave_worker |   42 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2969 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2970 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2971 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2954 | system user |           | NULL | Slave_worker |   27 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2952 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2972 | system user |           | NULL | Slave_worker |   15 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2973 | system user |           | NULL | Slave_worker |   16 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2974 | system user |           | NULL | Slave_worker |   10 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2975 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2955 | system user |           | NULL | Slave_worker |    9 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2976 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2977 | system user |           | NULL | Slave_worker |   27 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2978 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2979 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2980 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2981 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2956 | system user |           | NULL | Slave_worker |   21 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2982 | system user |           | NULL | Slave_worker |    8 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2983 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2984 | system user |           | NULL | Slave_worker |    8 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2985 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2986 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2987 | system user |           | NULL | Slave_worker |    9 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2988 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2991 | system user |           | NULL | Slave_worker |   25 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2989 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2992 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2993 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2995 | system user |           | NULL | Slave_worker |   30 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2994 | system user |           | NULL | Slave_worker |    4 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2996 | system user |           | NULL | Slave_worker |   13 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2990 | system user |           | NULL | Slave_worker |    8 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2997 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 2998 | system user |           | NULL | Slave_worker |   50 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3000 | system user |           | NULL | Slave_worker |    8 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3001 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3002 | system user |           | NULL | Slave_worker |   13 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3003 | system user |           | NULL | Slave_worker |    9 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3004 | system user |           | NULL | Slave_worker |    4 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3006 | system user |           | NULL | Slave_worker |    6 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3005 | system user |           | NULL | Slave_worker |   15 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3007 | system user |           | test | Slave_worker |   18 | Update_rows_log_event::ha_update_row(-1) on table `b_sessionmgmt` | NULL                                |    0.000 |
      | 2999 | system user |           | NULL | Slave_worker |    7 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3009 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3010 | system user |           | test | Slave_worker |    0 | Waiting for prior transaction to commit                           | XA COMMIT X'7869645f31373038',X'',1 |    0.000 |
      | 3011 | system user |           | NULL | Slave_worker |   49 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3012 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3013 | system user |           | NULL | Slave_worker |   12 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3014 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3015 | system user |           | NULL | Slave_worker |    6 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3016 | system user |           | test | Slave_worker |    2 | Waiting for prior transaction to commit                           | XA COMMIT X'7869645f353931',X'',1   |    0.000 |
      | 3018 | system user |           | NULL | Slave_worker |   24 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3017 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3019 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3020 | system user |           | test | Slave_worker |    2 | Update_rows_log_event::find_row(-1) on table `b_sessionmgmt`      | NULL                                |    0.000 |
      | 3008 | system user |           | NULL | Slave_worker |   16 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3022 | system user |           | NULL | Slave_worker |   12 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3023 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3021 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3024 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3025 | system user |           | NULL | Slave_worker |   14 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3026 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3027 | system user |           | NULL | Slave_worker |    9 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3028 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3029 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3030 | system user |           | NULL | Slave_worker |   19 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3031 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3032 | system user |           | NULL | Slave_worker |   26 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3033 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3034 | system user |           | NULL | Slave_worker |   15 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3035 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3036 | system user |           | NULL | Slave_worker |   26 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3037 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3038 | system user |           | NULL | Slave_worker |   16 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3039 | system user |           | NULL | Slave_worker |   14 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3041 | system user |           | test | Slave_worker |    0 | Waiting for prior transaction to commit                           | XA COMMIT X'7869645f32323934',X'',1 |    0.000 |
      | 3040 | system user |           | NULL | Slave_worker |   12 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3042 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3043 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3045 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3046 | system user |           | NULL | Slave_worker |   13 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3047 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3048 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3049 | system user |           | NULL | Slave_worker |    6 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3050 | system user |           | test | Slave_worker |    2 | Update_rows_log_event::ha_update_row(-1) on table `b_sessionmgmt` | NULL                                |    0.000 |
      | 3051 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3052 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3053 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3054 | system user |           | NULL | Slave_worker |   18 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3055 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3056 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3057 | system user |           | NULL | Slave_worker |   13 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3058 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3059 | system user |           | NULL | Slave_worker |   17 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3060 | system user |           | NULL | Slave_worker |   15 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3061 | system user |           | NULL | Slave_worker |   12 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3062 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3063 | system user |           | test | Slave_worker |    3 | Update_rows_log_event::ha_update_row(-1) on table `b_sessionmgmt` | NULL                                |    0.000 |
      | 3064 | system user |           | NULL | Slave_worker |   18 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3065 | system user |           | test | Slave_worker |    3 | Update_rows_log_event::find_row(-1) on table `b_sessionmgmt`      | NULL                                |    0.000 |
      | 3066 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3067 | system user |           | test | Slave_worker |    1 | Waiting for prior transaction to commit                           | XA COMMIT X'7869645f31393231',X'',1 |    0.000 |
      | 3068 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3069 | system user |           | test | Slave_worker |    0 | Waiting for prior transaction to commit                           | XA COMMIT X'7869645f363634',X'',1   |    0.000 |
      | 3070 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3071 | system user |           | NULL | Slave_worker |   10 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3072 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3073 | system user |           | NULL | Slave_worker |    4 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3074 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3075 | system user |           | NULL | Slave_worker |   11 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3076 | system user |           | NULL | Slave_worker |   27 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3077 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3078 | system user |           | NULL | Slave_worker |    8 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3079 | system user |           | NULL | Slave_worker |   13 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3080 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3081 | system user |           | NULL | Slave_worker |   24 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3082 | system user |           | NULL | Slave_worker |    9 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3083 | system user |           | NULL | Slave_worker |   11 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3044 | system user |           | NULL | Slave_worker |    7 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3084 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3085 | system user |           | NULL | Slave_worker |    2 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3086 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3087 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3088 | system user |           | NULL | Slave_worker |    6 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3089 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3090 | system user |           | NULL | Slave_worker |   15 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3091 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3092 | system user |           | test | Slave_worker |    1 | Waiting for prior transaction to commit                           | XA COMMIT X'7869645f31353033',X'',1 |    0.000 |
      | 3093 | system user |           | NULL | Slave_worker |    3 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3094 | system user |           | NULL | Slave_worker |   17 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3095 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3096 | system user |           | NULL | Slave_worker |    1 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3097 | system user |           | NULL | Slave_worker |    5 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3098 | system user |           | NULL | Slave_worker |   15 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3099 | system user |           | NULL | Slave_worker |   28 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3100 | system user |           | NULL | Slave_worker |   12 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3101 | system user |           | NULL | Slave_worker |   29 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3102 | system user |           | NULL | Slave_worker |    0 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3103 | system user |           | NULL | Slave_worker |   18 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3104 | system user |           | NULL | Slave_worker |    6 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3105 | system user |           | NULL | Slave_worker |   27 | Waiting for prior transaction to commit                           | NULL                                |    0.000 |
      | 3106 | system user |           | test | Slave_worker |    1 | Write_rows_log_event::write_row(-1) on table `b_sessionmgmt`      | NULL                                |    0.000 |
      |    6 | system user |           | NULL | Slave_SQL    |  496 | Waiting for room in worker thread event queue                     | NULL                                |    0.000 |
      | 3144 | root        | localhost | test | Query        |    0 | starting                                                          | show processlist                    |    0.000 |
      +------+-------------+-----------+------+--------------+------+-------------------------------------------------------------------+-------------------------------------+----------+
      3103 rows in set (0.035 sec)
      

      Versus (sample end of SHOW PROCESSLIST;):

      bb-10.6-MDEV-31949_ver0_opt 10.6.18 5d1a254290f8203a8f2fc60d414c09fde6643493 (Optimized, Replica)

      ...
      | 2900 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f343834',X'',1   |    0.000 |
      | 2901 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2902 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2903 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31343433',X'',1 |    0.000 |
      | 2904 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2905 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2906 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f383139',X'',1   |    0.000 |
      | 2907 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31353433',X'',1 |    0.000 |
      | 2908 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2910 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32313032',X'',1 |    0.000 |
      | 2911 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2913 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31323631',X'',1 |    0.000 |
      | 2915 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2914 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f373435',X'',1   |    0.000 |
      | 2916 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f313432',X'',1   |    0.000 |
      | 2912 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31353830',X'',1 |    0.000 |
      | 2917 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31393134',X'',1 |    0.000 |
      | 2918 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31383030',X'',1 |    0.000 |
      | 2909 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2919 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2920 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2922 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2921 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f323634',X'',1   |    0.000 |
      | 2924 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31373431',X'',1 |    0.000 |
      | 2926 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f343036',X'',1   |    0.000 |
      | 2927 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31373135',X'',1 |    0.000 |
      | 2928 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2929 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2930 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2931 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31363237',X'',1 |    0.000 |
      | 2932 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2935 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2933 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31333734',X'',1 |    0.000 |
      | 2937 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f323337',X'',1   |    0.000 |
      | 2936 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31393931',X'',1 |    0.000 |
      | 2938 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2939 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f393336',X'',1   |    0.000 |
      | 2940 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2941 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32373834',X'',1 |    0.000 |
      | 2942 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f383336',X'',1   |    0.000 |
      | 2944 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f363933',X'',1   |    0.000 |
      | 2945 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f333035',X'',1   |    0.000 |
      | 2946 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2925 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f3937',X'',1     |    0.000 |
      | 2949 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2950 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f393832',X'',1   |    0.000 |
      | 2943 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2951 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f353239',X'',1   |    0.000 |
      | 2952 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f323736',X'',1   |    0.000 |
      | 2947 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f353030',X'',1   |    0.000 |
      | 2953 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31323738',X'',1 |    0.000 |
      | 2948 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31353835',X'',1 |    0.000 |
      | 2955 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f3937',X'',1     |    0.000 |
      | 2956 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2934 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2957 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2958 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2954 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2959 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31343833',X'',1 |    0.000 |
      | 2960 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f343639',X'',1   |    0.000 |
      | 2961 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31303238',X'',1 |    0.000 |
      | 2963 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2965 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31373439',X'',1 |    0.000 |
      | 2964 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32303432',X'',1 |    0.000 |
      | 2966 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31303539',X'',1 |    0.000 |
      | 2967 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2968 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32303537',X'',1 |    0.000 |
      | 2969 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2970 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2971 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32373732',X'',1 |    0.000 |
      | 2972 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2973 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2974 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2975 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2976 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2977 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2923 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2978 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2980 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2979 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31353434',X'',1 |    0.000 |
      | 2981 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31323431',X'',1 |    0.000 |
      | 2982 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2983 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f333037',X'',1   |    0.000 |
      | 2984 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f333337',X'',1   |    0.000 |
      | 2985 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31363034',X'',1 |    0.000 |
      | 2986 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2987 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f373431',X'',1   |    0.000 |
      | 2988 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2989 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31323533',X'',1 |    0.000 |
      | 2990 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2991 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31313530',X'',1 |    0.000 |
      | 2992 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2993 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2994 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2995 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32373335',X'',1 |    0.000 |
      | 2962 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f353738',X'',1   |    0.000 |
      | 2996 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2997 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f383630',X'',1   |    0.000 |
      | 2998 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 2999 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3001 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3000 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f323334',X'',1   |    0.000 |
      | 3003 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f363439',X'',1   |    0.000 |
      | 3005 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3002 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32373238',X'',1 |    0.000 |
      | 3006 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3004 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f383031',X'',1   |    0.000 |
      | 3007 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3008 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3011 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f323431',X'',1   |    0.000 |
      | 3010 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3012 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3013 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3014 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3009 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3015 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31393336',X'',1 |    0.000 |
      | 3017 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f323639',X'',1   |    0.000 |
      | 3018 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3016 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3019 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31333137',X'',1 |    0.000 |
      | 3020 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f343038',X'',1   |    0.000 |
      | 3021 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f383638',X'',1   |    0.000 |
      | 3022 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f393337',X'',1   |    0.000 |
      | 3023 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3024 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3025 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3026 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3027 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31363731',X'',1 |    0.000 |
      | 3028 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31343031',X'',1 |    0.000 |
      | 3029 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3030 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3031 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32353135',X'',1 |    0.000 |
      | 3032 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32373235',X'',1 |    0.000 |
      | 3033 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3034 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3035 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32323130',X'',1 |    0.000 |
      | 3037 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3038 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3039 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31343531',X'',1 |    0.000 |
      | 3040 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3036 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3041 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3042 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3043 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32383437',X'',1 |    0.000 |
      | 3044 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32373536',X'',1 |    0.000 |
      | 3045 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3048 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31343937',X'',1 |    0.000 |
      | 3047 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3049 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32383334',X'',1 |    0.000 |
      | 3050 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3051 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f353735',X'',1   |    0.000 |
      | 3052 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31303335',X'',1 |    0.000 |
      | 3053 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3054 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3055 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f323235',X'',1   |    0.000 |
      | 3056 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f3530',X'',1     |    0.000 |
      | 3057 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31303739',X'',1 |    0.000 |
      | 3058 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3059 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31393737',X'',1 |    0.000 |
      | 3061 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3062 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3046 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3060 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32353238',X'',1 |    0.000 |
      | 3063 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32373332',X'',1 |    0.000 |
      | 3064 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3065 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3066 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3067 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3069 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3070 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3068 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3072 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31383335',X'',1 |    0.000 |
      | 3073 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3074 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32383931',X'',1 |    0.000 |
      | 3071 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3076 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32303334',X'',1 |    0.000 |
      | 3077 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3078 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3079 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3075 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32393831',X'',1 |    0.000 |
      | 3081 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3080 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32343135',X'',1 |    0.000 |
      | 3082 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31303031',X'',1 |    0.000 |
      | 3083 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31353432',X'',1 |    0.000 |
      | 3084 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3085 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f333133',X'',1   |    0.000 |
      | 3086 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3087 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3088 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3089 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3090 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3091 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32303534',X'',1 |    0.000 |
      | 3092 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3093 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31313437',X'',1 |    0.000 |
      | 3094 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3096 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3095 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3097 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31363432',X'',1 |    0.000 |
      | 3098 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f363039',X'',1   |    0.000 |
      | 3100 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3101 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3099 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3102 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3104 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f32383738',X'',1 |    0.000 |
      | 3103 | system user |           | NULL | Slave_worker |    0 | closing tables                                | NULL                                |    0.000 |
      | 3105 | system user |           | NULL | Slave_worker | 1205 | Waiting for prior transaction to commit       | NULL                                |    0.000 |
      | 3106 | system user |           | test | Slave_worker | 1205 | Waiting for prior transaction to commit       | XA COMMIT X'7869645f31383133',X'',1 |    0.000 |
      |    6 | system user |           | NULL | Slave_SQL    | 1212 | Waiting for room in worker thread event queue | NULL                                |    0.000 |
      | 3132 | root        | localhost | test | Query        |    0 | starting                                      | show processlist                    |    0.000 |
      +------+-------------+-----------+------+--------------+------+-----------------------------------------------+-------------------------------------+----------+
      3103 rows in set (0.035 sec)
      

      Note the long thread durations (stopped waiting after 20 minutes). Both tests were running at the same time; the issue is not related to system load.
      The issue is visible on the replica immediately upon commencing the sysbench run (10-20 seconds).

      Attachments

        Issue Links

          Activity

            People

              Elkin Andrei Elkin
              Roel Roel Van de Paar
              Votes:
              0 Vote for this issue
              Watchers:
              5 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Git Integration

                  Error rendering 'com.xiplink.jira.git.jira_git_plugin:git-issue-webpanel'. Please contact your Jira administrators.