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MDEV-7936: Assertion `!table || table->in_use == _current_thd()' failed on parallel replication in optimistic mode

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Make sure that in parallel replication, we execute wait_for_prior_commit()
before setting table->in_use for a temporary table. Otherwise we can end up
with two parallel replication worker threads competing with each other for
use of a temporary table.

Re-factor the use of find_temporary_table() to be able to handle errors
in the caller (as wait_for_prior_commit() can return error in case of
deadlock kill).
This commit is contained in:
Kristian Nielsen
2015-04-13 09:52:56 +02:00
parent c47fe0e9db
commit 60d094aeac
5 changed files with 116 additions and 41 deletions
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4
sql/sql_table.cc
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@ -4687,7 +4687,9 @@ int create_table_impl(THD *thd,
if (create_info->tmp_table())
{
TABLE *tmp_table;
if ((tmp_table= find_temporary_table(thd, db, table_name)))
if (find_and_use_temporary_table(thd, db, table_name, &tmp_table))
goto err;
if (tmp_table)
{
bool table_creation_was_logged= tmp_table->s->table_creation_was_logged;
if (create_info->options & HA_LEX_CREATE_REPLACE)