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MDEV-4516 SELECT from I_S.QUERY_CACHE_INFO produces ER_UNKNOWN_ERROR when query cache size is 0

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if qc->try_lock() fails, it's not an error
This commit is contained in:
Sergei Golubchik
2013-05-24 14:33:04 +02:00
parent cb246b20d6
commit 9bc4c4183d
3 changed files with 7 additions and 1 deletions
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3
mysql-test/suite/plugins/r/qc_info.result
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@ -12,4 +12,7 @@ test select * from t1 1 512
drop table t1;
select statement_schema, statement_text, result_blocks_count, result_blocks_size from information_schema.query_cache_info;
statement_schema statement_text result_blocks_count result_blocks_size
set global query_cache_size = 0;
select * from information_schema.query_cache_info;
STATEMENT_SCHEMA STATEMENT_TEXT RESULT_BLOCKS_COUNT RESULT_BLOCKS_SIZE RESULT_BLOCKS_SIZE_USED
set global query_cache_size= default;