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  1. MariaDB Server
  2. MDEV-359

Server crash when SET GLOBAL rpl_semi_sync_master_enabled = OFF

    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 5.5.24
    • Fix Version/s: 5.5.25
    • Component/s: None
    • Labels:
      None

      Description

      Running below test case by Elena randomly causes a server crash (ie. it needs
      to run a few times to cause the crash, ./mtr --repeat=100).

      Bug is also present in MySQL 5.5. See also
      http://bugs.mysql.com/bug.php?id=50160.

      Thread 1 (Thread 0x7f449d6f0700 (LWP 16616)):
      #0  0x00007f44a92ba4ec in __pthread_kill (threadid=<optimized out>, signo=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pthread_kill.c:63
      #1  0x0000000000cb000b in my_write_core (sig=11) at /home/knielsen/my/5.5/mariadb-5.5/mysys/stacktrace.c:457
      #2  0x00000000007d1adc in handle_fatal_signal (sig=11) at /home/knielsen/my/5.5/mariadb-5.5/sql/signal_handler.cc:279
      #3  <signal handler called>
      #4  0x00007f449d4a4328 in Trace::function_enter (this=0x0, func_name=0x7f449d4a558a "ActiveTranx::is_tranx_end_pos") at /home/knielsen/my/5.5/mariadb-5.5/plugin/semisync/semisync.h:50
      #5  0x00007f449d4a2216 in ActiveTranx::is_tranx_end_pos (this=0x0, log_file_name=0x38215b8 "master-bin.000001", log_file_pos=576) at /home/knielsen/my/5.5/mariadb-5.5/plugin/semisync/semisync_master.cc:198
      #6  0x00007f449d4a33a8 in ReplSemiSyncMaster::commitTrx (this=0x7f449d6a8160, trx_wait_binlog_name=0x38215b8 "master-bin.000001", trx_wait_binlog_pos=576) at /home/knielsen/my/5.5/mariadb-5.5/plugin/semisync/semisync_master.cc:746
      #7  0x00007f449d4a4a94 in repl_semi_report_commit (param=0x7f449d6eebd0) at /home/knielsen/my/5.5/mariadb-5.5/plugin/semisync/semisync_master_plugin.cc:59
      #8  0x0000000000725abc in Trans_delegate::after_commit (this=0x14d8960, thd=0x3754710, all=false) at /home/knielsen/my/5.5/mariadb-5.5/sql/rpl_handler.cc:243
      #9  0x00000000007d4366 in ha_commit_trans (thd=0x3754710, all=false) at /home/knielsen/my/5.5/mariadb-5.5/sql/handler.cc:1306
      #10 0x00000000007314eb in trans_commit_stmt (thd=0x3754710) at /home/knielsen/my/5.5/mariadb-5.5/sql/transaction.cc:299
      #11 0x0000000000630fb9 in mysql_execute_command (thd=0x3754710) at /home/knielsen/my/5.5/mariadb-5.5/sql/sql_parse.cc:4514
      #12 0x0000000000633c96 in mysql_parse (thd=0x3754710, rawbuf=0x37f6118 "INSERT INTO t1 SELECT * FROM t1", length=31, parser_state=0x7f449d6ef610) at /home/knielsen/my/5.5/mariadb-5.5/sql/sql_parse.cc:5736
      #13 0x0000000000627e50 in dispatch_command (command=COM_QUERY, thd=0x3754710, packet=0x3758141 "INSERT INTO t1 SELECT * FROM t1", packet_length=31) at /home/knielsen/my/5.5/mariadb-5.5/sql/sql_parse.cc:1055

      --source include/have_binlog_format_mixed_or_statement.inc
      --source include/master-slave.inc
      CREATE TABLE t1 (a INT) ENGINE=MyISAM;
      INSTALL PLUGIN rpl_semi_sync_master SONAME 'semisync_master.so';
      SET GLOBAL rpl_semi_sync_master_enabled = ON;
      --connection master1
      --send
      INSERT INTO t1 SELECT * FROM t1;
      --connection master
      --sync_slave_with_master
      --connection master
      SET GLOBAL rpl_semi_sync_master_enabled = OFF;
      --connection master1
      --reap
       
      connection master;
      DROP TABLE t1;
       
      disable_warnings;
      UNINSTALL PLUGIN rpl_semi_sync_master;
      enable_warnings;
       
      --source include/rpl_end.inc

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            • Assignee:
              knielsen Kristian Nielsen
              Reporter:
              knielsen Kristian Nielsen
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              Dates

              • Created:
                Updated:
                Resolved: