91 lines
2.2 KiB
Plaintext
91 lines
2.2 KiB
Plaintext
# ==== Purpose ====
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#
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# Test verifies that there is no deadlock when following commands are executed
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# in parallel.
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#
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# SHOW BINARY LOGS
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#
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# SELECT * FROM performance_schema.session_variables WHERE VARIABLE_NAME LIKE
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# 'binlog_transaction_dependency_tracking'
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#
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# PURGE BINARY LOGS BEFORE $date;
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#
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# ==== Implementation ====
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#
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# With the help of DEBUG_SYNC operations simulate the deadlock environment.
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#
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# 1) PURGE LOGS BEFORE date
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# Owns: MYSQL_BIN_LOG::LOCK_index
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# Waits for: THD::LOCK_thd_data
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#
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# 2) select query on performance_schema.session_variables table
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# Owns: THD::LOCK_thd_data
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# Waits for: MYSQL_BIN_LOG::LOCK_log
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#
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# 3) SHOW BINARY LOGS
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# Owns: MYSQL_BIN_LOG::LOCK_log
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# Waits for: MYSQL_BIN_LOG::LOCK_index
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#
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# ==== References ====
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#
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# Bug#28511326: DEADLOCK DURING PURGE_LOGS_BEFORE_DATE
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--source include/have_debug_sync.inc
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--source include/have_log_bin.inc
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--echo #
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--echo # Bug 92108: Deadlock by concurrent SHOW BINLOGS,
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--echo # performance_schema.session_variables query, and binlog purge
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--echo #
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RESET MASTER;
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FLUSH LOGS;
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--enable_connect_log
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--connect(con1,localhost,root,,)
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SET DEBUG_SYNC="purge_logs_after_lock_index_before_thread_count SIGNAL purge_ready WAIT_FOR finish_purge";
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--send PURGE BINARY LOGS BEFORE '2038-01-19'
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--connect(con2,localhost,root,,)
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SET DEBUG_SYNC="materialize_session_variable_array_THD_locked SIGNAL pfs_ready WAIT_FOR finish_pfs";
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--send SELECT * FROM performance_schema.session_variables WHERE VARIABLE_NAME LIKE 'binlog_transaction_dependency_tracking';
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--connect(con3,localhost,root,,)
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SET DEBUG_SYNC="show_binlogs_after_lock_log_before_lock_index SIGNAL show_ready WAIT_FOR finish_show";
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--send SHOW BINARY LOGS
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--connection default
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SET DEBUG_SYNC="now WAIT_FOR purge_ready";
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SET DEBUG_SYNC="now WAIT_FOR pfs_ready";
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SET DEBUG_SYNC="now WAIT_FOR show_ready";
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SET DEBUG_SYNC="now SIGNAL finish_purge";
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SET DEBUG_SYNC="now SIGNAL finish_pfs";
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SET DEBUG_SYNC="now SIGNAL finish_show";
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--connection con1
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replace_regex /\.[\\\/]binlog/binlog/;
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reap;
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--disconnect con1
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--connection con2
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reap;
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--disconnect con2
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--connection con3
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--disable_result_log
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reap;
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--enable_result_log
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--disconnect con3
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--connection default
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SET DEBUG_SYNC= 'RESET';
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--disable_connect_log
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