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MDEV-30825 innodb_compression_algorithm=0 (none) increments Innodb_num_pages_page_compression_error

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fil_page_compress_low returns 0 for both innodb_compression_algorithm=0
and where there is compression errors. On the two callers to this
function, don't increment the compression errors if the algorithm was
none.

Reviewed by: Marko Mäkelä
This commit is contained in:
Daniel Black
2023-03-09 09:34:47 +11:00
parent ac15141448
commit e467e8d8c2
3 changed files with 50 additions and 4 deletions
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18
mysql-test/suite/innodb/r/innodb-page_compression_none.result Normal file
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#
# MDEV-30825 innodb_compression_algorithm=0 (none) increments Innodb_num_pages_page_compression_error
#
SET @save_compression_algorithm=@@GLOBAL.innodb_compression_algorithm;
SET GLOBAL innodb_compression_algorithm=0;
SELECT VARIABLE_VALUE INTO @compress_errors FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'Innodb_num_pages_page_compression_error';
CREATE TABLE t (c INT) page_compressed=1 page_compression_level=4 ENGINE=InnoDB;
INSERT INTO t VALUES (1);
FLUSH TABLES t FOR EXPORT;
UNLOCK TABLES;
SELECT VARIABLE_VALUE - @compress_errors AS NUMBER_OF_ERRORS FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'Innodb_num_pages_page_compression_error';
NUMBER_OF_ERRORS
0
DROP TABLE t;
SET GLOBAL innodb_compression_algorithm=@save_compression_algorithm;
#
# End of 10.4 tests
#