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MDEV-15149 Assert upon concurrent creating / querying sequences

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MDEV-15117 Server crashes in in open_and_process_table or ASAN
heap-use-after-free in is_temporary_table upon creating/flushing
sequences.

Problem was that sequence_insert closed and reopened the like table
without proper locking.  Fixed by ensuring that the like table is
not reopened in sequence_insert
This commit is contained in:
Monty
2018-03-29 14:16:35 +03:00
parent cd93eeeb1d
commit 4277c173a9
2 changed files with 27 additions and 0 deletions
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9
mysql-test/suite/sql_sequence/concurrent_create.result
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@@ -22,3 +22,12 @@ select * from s2;
next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
1 1 9223372036854775806 1 1 1000 0 0
DROP SEQUENCE s1, s2;
CREATE SEQUENCE s1 ENGINE=InnoDB;
connect con1,localhost,root,,test;
CREATE TABLE s2 LIKE s1;;
connection default;
FLUSH TABLES;
connection con1;
disconnect con1;
connection default;
DROP TABLE s1,s2;