Intermittent percona_changed_pages failures in Jenkins

Bug #1071877 reported by Alexey Kopytov on 2012-10-26
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Percona Server
Laurynas Biveinis
Laurynas Biveinis
Laurynas Biveinis

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The failing test is somewhat nondeterministic: it puts lower and upper bounds on the amount of log bitmap data generated by running a workload that exceeds log capacity twice. These bounds are relatively far removed from each other. The failing test seems like a misprediction of the upper bound.

The multiple bitmap file writer has a different workload that has a short workload and uses server restarts to make InnoDB checkpoints. The number of tablespace pages created is deterministic there.

For now will assume that the multiple file writer branch fixes this and of course will investigate if this comes up again.

Another source of test case instability:,Host=centos5-32/testReport/junit/%28root%29/innodb/percona_changed_page_bmp_2/

This suggests bitmap files present from the previous (bitmap) test cases in the same MTR run.

And another source of nondeterminism is bug 1076892.

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