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MDEV-24545 Sequence created by one connection remains invisible to another

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row_merge_is_index_usable(): Allow access to any SEQUENCE, even if it was
created after the read view. SQL sequences are no-rollback tables with no
history at all.
This commit is contained in:
Marko Mäkelä 2021-04-27 08:44:28 +03:00
parent 0785771e57
commit 29b2f3dbb5
3 changed files with 33 additions and 1 deletions
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13
mysql-test/suite/sql_sequence/concurrent_create.result
View file

@ -31,3 +31,16 @@ connection con1;
disconnect con1;
connection default;
DROP TABLE s1,s2;
CREATE TABLE t1 (a INT) ENGINE=InnoDB;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connect con1,localhost,root,,test;
CREATE SEQUENCE s1 ENGINE=InnoDB;
FLUSH TABLES;
disconnect con1;
connection default;
SELECT NEXTVAL(s1);
NEXTVAL(s1)
1
COMMIT;
DROP TABLE t1;
DROP SEQUENCE s1;

19
mysql-test/suite/sql_sequence/concurrent_create.test
View file

@ -56,3 +56,22 @@ FLUSH TABLES;
--connection default
DROP TABLE s1,s2;
#
# MDEV-24545 Sequence created by one connection remains invisible to another
#
CREATE TABLE t1 (a INT) ENGINE=InnoDB;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
--connect (con1,localhost,root,,test)
CREATE SEQUENCE s1 ENGINE=InnoDB;
FLUSH TABLES;
--disconnect con1
--connection default
SELECT NEXTVAL(s1);
COMMIT;
# Cleanup
DROP TABLE t1;
DROP SEQUENCE s1;

2
storage/innobase/row/row0merge.cc
View file

@ -4478,7 +4478,7 @@ row_merge_is_index_usable(
}
return(!index->is_corrupted()
&& (index->table->is_temporary()
&& (index->table->is_temporary() || index->table->no_rollback()
|| index->trx_id == 0
|| !trx->read_view.is_open()
|| trx->read_view.changes_visible(