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Merge 10.0 -> 10.1.

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Conflicts:
	mysql-test/suite/multi_source/multisource.result
	sql/sql_base.cc
This commit is contained in:
Kristian Nielsen
2015-04-17 15:18:44 +02:00
parent 8125db1d9a 702fdc52fa
commit 167332597f
32 changed files with 506 additions and 255 deletions
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19
sql/sql_base.cc
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@ -5924,6 +5924,25 @@ bool open_temporary_table(THD *thd, TABLE_LIST *tl)
DBUG_RETURN(FALSE);
}
/*
Temporary tables are not safe for parallel replication. They were
designed to be visible to one thread only, so have no table locking.
Thus there is no protection against two conflicting transactions
committing in parallel and things like that.
So for now, anything that uses temporary tables will be serialised
with anything before it, when using parallel replication.
ToDo: We might be able to introduce a reference count or something
on temp tables, and have slave worker threads wait for it to reach
zero before being allowed to use the temp table. Might not be worth
it though, as statement-based replication using temporary tables is
in any case rather fragile.
*/
if (thd->rgi_slave && thd->rgi_slave->is_parallel_exec &&
thd->wait_for_prior_commit())
DBUG_RETURN(true);
#ifdef WITH_PARTITION_STORAGE_ENGINE
if (tl->partition_names)
{