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MDEV-17167 - InnoDB: Failing assertion: table->get_ref_count() == 0 upon

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truncating a temporary table

TRUNCATE expects only one TABLE instance (which is used by TRUNCATE
itself) to be open. However this requirement wasn't enforced after
"MDEV-5535: Cannot reopen temporary table".

Fixed by closing unused table instances before performing TRUNCATE.
This commit is contained in:
Sergey Vojtovich
2018-09-12 16:36:45 +04:00
parent b9a5ff3644
commit bad2f1569d
6 changed files with 89 additions and 1 deletions
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2
sql/sql_truncate.cc
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@ -401,6 +401,8 @@ bool Sql_cmd_truncate_table::truncate_table(THD *thd, TABLE_LIST *table_ref)
/* In RBR, the statement is not binlogged if the table is temporary. */
binlog_stmt= !thd->is_current_stmt_binlog_format_row();
thd->close_unused_temporary_table_instances(table_ref);
error= handler_truncate(thd, table_ref, TRUE);
/*