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https://issues.apache.org/jira/browse/CASSANDRA-14580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16551765#comment-16551765
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Jordan West commented on CASSANDRA-14580:
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+1. The failing dtest from the no vnodes run does not look related and iirc is
known to be flaky.
> Make PeriodicCommitLogService.blockWhenSyncLagsNanos configurable
> -----------------------------------------------------------------
>
> Key: CASSANDRA-14580
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14580
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Jason Brown
> Assignee: Jason Brown
> Priority: Minor
> Fix For: 4.0
>
>
> When using the default values for periodic commitlog, the sync is every ten
> seconds and if there's a lad in flushing to disc, we can block for up to 15
> seconds (sync time * 1.5). However, if you lower the sync time to 1 second,
> for example, the block time is only 1.5 seconds (not acceptable in all
> situations). Admittedly this is only an expert-level setting, but useful in
> some cases.
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