origin/10.6 4903031baa196dfc9a75638d141b515883cd254c 2021-03-18T17:05:31+02:00

Worflow:

1. Start server and generate some initial data

2. Two sessions run concurrent a DDL mix

     Session 1 runs random

     CHECK TABLE t1 |

     determine processlist id of session 2; KILL SOFT QUERY processlist id of session 2 ;

     Session 2 runs

     ALTER TABLE t1 ADD FULLTEXT KEY ( col_text ) ;

At some point of time session 1 runs CHECK TABLE t1 and harvests

    Warning InnoDB: Table test/t1 contains 3 indexes inside InnoDB, which is different from the number of indexes 2 defined in the MariaDB

RQG grammar for illustration

---------------------------------------------

thread1:

    CHECK TABLE t1 |

    COMMIT ; SELECT MIN(processlist_id) INTO @kill_id FROM rqg . rqg_sessions WHERE rqg_id <> _thread_id AND processlist_id IS NOT NULL ; COMMIT ; KILL SOFT QUERY @kill_id ;

thread1_connect:

    ;

thread1_init:

    CREATE TABLE t1 ( col1 INT, col_text TEXT ) ENGINE = InnoDB ROW_FORMAT = Dynamic ; ALTER TABLE t1 ADD COLUMN col1_derivate INT GENERATED ALWAYS AS (col1 * 2) ;

thread2:

    ALTER TABLE t1 ADD FULLTEXT KEY ( col_text ) ;

thread2_connect:

    REPLACE INTO rqg . rqg_sessions SET rqg_id = _thread_id , processlist_id = CONNECTION_ID(); COMMIT ;   # thread2 publishes his processlist_id

thread2_init:

    ;

query:   # Maybe existing but not needed sessions like thread3, thread4 ... just exit

    { exit 0 };

pluto:/data/Results/1616102002/CATCH-001/dev/shm/vardir/1616102002/8/1/rr

_RR_TRACE_DIR="." rr replay --mark-stdio

Hint: The rr trace ends with receiving the SIGKILL sent by RQG because of the problem above.

RQG

====

git clone https://github.com/mleich1/rqg --branch experimental RQG

perl rqg.pl \

--duration=100 \

--queries=10000000 \

--no_mask \

--seed=random \

--gendata=conf/mariadb/table_stress.zz \

--gendata_sql=conf/mariadb/table_stress.sql \

--engine=InnoDB \

--rpl_mode=none \

--mysqld=--log-bin \

--mysqld=--loose-debug_assert_on_not_freed_memory=0 \

--mysqld=--innodb-buffer-pool-size=24M \

--mysqld=--loose-idle_write_transaction_timeout=0 \

--mysqld=--loose-idle_readonly_transaction_timeout=0 \

--mysqld=--log-output=none \

--mysqld=--lock-wait-timeout=86400 \

--mysqld=--loose-idle_transaction_timeout=0 \

--mysqld=--innodb-lock-wait-timeout=50 \

--mysqld=--slave_net_timeout=60 \

--mysqld=--loose_innodb_lock_schedule_algorithm=fcfs \

--mysqld=--innodb_page_size=64K \

--mysqld=--loose-table_lock_wait_timeout=50 \

--mysqld=--net_read_timeout=30 \

--mysqld=--connect_timeout=60 \

--mysqld=--innodb_stats_persistent=off \

--mysqld=--interactive_timeout=28800 \

--mysqld=--loose-max-statement-time=3 \

--mysqld=--wait_timeout=28800 \

--mysqld=--net_write_timeout=60 \

--mysqld=--plugin-load-add=file_key_management.so \

--mysqld=--file-key-management-filename=$RQG_HOME/conf/mariadb/encryption_keys.txt \

--mysqld=--loose_innodb_use_native_aio=0 \

--mysqld=--log_bin_trust_function_creators=1 \

--reporters=Backtrace,Deadlock1,ErrorLog \

--validators=None \

--threads=3 \

--grammar=CATCH-001.yy \

--workdir=<local settings> \

--vardir=<local settings> \

--mtr-build-thread=<local settings> \

--basedir1=<local settings> \

--script_debug=_nix_ \

--rr=Extended \

--rr_options=--chaos