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MDEV#6206: wsrep_slave_threads subtracts from max_connections

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Decoupled wsrep thread count from connection count. By doing so,
the number of wsrep threads (applier/rollbacker) would no longer
affect the threads_connected status variable and thus maximum
allowable user connections limit would be @@max_connections.

Also introduced a new status variable 'wsrep_thread_count' to hold
the number of wsrep applier/rollbacker threads.

Added a test case.
This commit is contained in:
Nirbhay Choubey
2014-05-08 14:45:00 -04:00
parent 93a403bf1d
commit 00b6fff2e7
4 changed files with 124 additions and 7 deletions
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mysql-test/include/mtr_check.sql
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@@ -32,6 +32,7 @@ BEGIN
AND variable_name not like "Last_IO_Err*"
AND variable_name != 'INNODB_IBUF_MAX_SIZE'
AND variable_name != 'INNODB_USE_NATIVE_AIO'
AND variable_name != 'WSREP_DATA_HOME_DIR'
ORDER BY variable_name;
-- Dump all databases, there should be none