PS-9328: Fix for sporadic index_merge_innodb test failures. #5428
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Sporadic index_merge_innodb test failures occurred when InnoDB purge threads were unable to keep up with removing rows which were marked for deletion. The presence of these rows affected row count estimations making EXPLAIN output differ. Fixed by running OPTIMIZE TABLE to ensure delete-marked rows removal prior to running EXPLAIN that failed.
satya-bodapati
approved these changes
Sep 16, 2024
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Sporadic index_merge_innodb test failures occurred when InnoDB purge threads were unable to keep up with removing rows which were marked for deletion. The presence of these rows affected row count estimations making EXPLAIN output differ.
Fixed by running OPTIMIZE TABLE to ensure delete-marked rows removal prior to running EXPLAIN that failed.