Fix Version/s: None
In v2.1.11 when using configuration
will frequently get this WARN log though there is not a real problem.
WARN [COMMIT-LOG-WRITER] 2016-03-03 00:40:11,646 AbstractCommitLogService.java:105 - Out of 142412 commit log syncs over the past 300s with average duration of 0.00ms, 35 have exceeded the configured commit interval by an average of 3.66ms
WARN [COMMIT-LOG-WRITER] 2016-03-03 00:45:11,755 AbstractCommitLogService.java:105 - Out of 104605 commit log syncs over the past 300s with average duration of 1.74ms, 18314 have exceeded the configured commit interval by an average of 6.33ms
Looks like BatchCommitLogService sets AbstractCommitLogService() pollIntervalMillis to the configured commitlog_sync_batch_window_in_ms. Since
CASSANDRA-9504, this is by default set to 2 which causes this WARN message to be triggered unnecessarily.