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MDEV-5262, MDEV-5914, MDEV-5941, MDEV-6020: Deadlocks during parallel replication causing replication to fail.

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After-review changes.

For this patch in 10.0, we do not introduce a new public storage engine API,
we just fix the InnoDB/XtraDB issues. In 10.1, we will make a better public
API that can be used for all storage engines (MDEV-6429).

Eliminate the background thread that did deadlock kills asynchroneously.
Instead, we ensure that the InnoDB/XtraDB code can handle doing the kill from
inside the deadlock detection code (when thd_report_wait_for() needs to kill a
later thread to resolve a deadlock).

(We preserve the part of the original patch that introduces dedicated mutex
and condition for the slave init thread, to remove the abuse of
LOCK_thread_count for start/stop synchronisation of the slave init thread).
This commit is contained in:
Kristian Nielsen
2014-07-08 12:54:47 +02:00
parent e5149fa0d9
commit 98fc5b3af8
25 changed files with 382 additions and 265 deletions
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2
sql/sql_class.h
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@ -1358,7 +1358,7 @@ enum enum_thread_type
SYSTEM_THREAD_EVENT_SCHEDULER= 16,
SYSTEM_THREAD_EVENT_WORKER= 32,
SYSTEM_THREAD_BINLOG_BACKGROUND= 64,
SYSTEM_THREAD_SLAVE_BACKGROUND= 128,
SYSTEM_THREAD_SLAVE_INIT= 128,
};
inline char const *