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Merge 10.3 into 10.4

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This commit is contained in:
Marko Mäkelä
2019-11-06 13:44:56 +02:00
parent d9899ce671 908ca4668d
commit 928abd6967
27 changed files with 429 additions and 123 deletions
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16
mysql-test/suite/perfschema/r/misc.result
View File

@ -134,3 +134,19 @@ truncate performance_schema.events_statements_history 0
select * from t1 3
insert into t1 select RAND()*10000 from t1 6
drop table t1;
#
# MDEV-17896 Assertion `pfs->get_refcount() > 0' failed
# in release_table_share
#
SELECT COUNT(*)<@@performance_schema_max_table_instances FROM
performance_schema.objects_summary_global_by_type WHERE OBJECT_TYPE='TABLE';
COUNT(*)<@@performance_schema_max_table_instances
1
CREATE TABLE t0(a INT);
SELECT * FROM t0;
a
DROP TEMPORARY TABLE IF EXISTS t0;
Warnings:
Note 1051 Unknown table 'test.t0'
FLUSH TABLE t0;
DROP TABLE t0;

48
mysql-test/suite/perfschema/t/misc.test
View File

@ -222,3 +222,51 @@ insert into t1 select RAND()*10000 from t1;
select sql_text, rows_examined from performance_schema.events_statements_history;
drop table t1;
--echo #
--echo # MDEV-17896 Assertion `pfs->get_refcount() > 0' failed
--echo # in release_table_share
--echo #
# There must be at least one available slot in PFS table_share_array for
# this test to be meaningful. If there are no free slots we must
# restart mysqld, it is the only way to reset PFS table_share_array
let $query= SELECT COUNT(*)<@@performance_schema_max_table_instances FROM
performance_schema.objects_summary_global_by_type WHERE OBJECT_TYPE='TABLE';
let $free_slots_available= `$query`;
if (!$free_slots_available)
{
source include/restart_mysqld.inc;
}
eval $query;
CREATE TABLE t0(a INT);
# TABLE_SHARE must be cached in the table definition cache.
SELECT * FROM t0;
# Dropping t0 using DROP TEMPORARY frees up a slot in table_share_array,
# but the persistent table is not correctly dropped, i.e. TABLE_SHARE::m_psi
# still points to that slot in table_share_array.
DROP TEMPORARY TABLE IF EXISTS t0;
# Try re-using each and every slot in PFS table_share_array. If bug is
# there, we re-use t0 slot.
# The newly created table that re-uses the t0 slot ends up
# resetting the PFS_table_share refcount.
let $i= `SELECT @@performance_schema_max_table_instances`;
disable_query_log;
while ($i)
{
# Memory engine is here to reduce disk IO
eval CREATE TABLE t$i(a INT) ENGINE=MEMORY;
eval DROP TABLE t$i;
dec $i;
}
enable_query_log;
# FLUSH TABLE crashes the server when PFS_table_share is found with
# an unexpected refcount.
FLUSH TABLE t0;
DROP TABLE t0;