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Parallel replication async deadlock kill

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When a deadlock kill is detected inside the storage engine, the kill
is not done immediately, to avoid calling back into the storage engine
kill_query method with various lock subsystem mutexes held. Instead the
kill is queued and done later by a slave background thread.

This patch in preparation for fixing TokuDB optimistic parallel
replication, as well as for removing locking hacks in InnoDB/XtraDB in
10.2.

Signed-off-by: Kristian Nielsen <knielsen at knielsen-hq.org>
This commit is contained in:
Kristian Nielsen
2016-09-08 15:25:40 +02:00
parent a02642b66e
commit 7e0c9de864
9 changed files with 268 additions and 46 deletions
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3
sql/sql_class.h
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@ -1449,7 +1449,8 @@ enum enum_thread_type
SYSTEM_THREAD_EVENT_SCHEDULER= 8,
SYSTEM_THREAD_EVENT_WORKER= 16,
SYSTEM_THREAD_BINLOG_BACKGROUND= 32,
SYSTEM_THREAD_SLAVE_INIT= 64
SYSTEM_THREAD_SLAVE_INIT= 64,
SYSTEM_THREAD_SLAVE_BACKGROUND= 128
};
inline char const *