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Posted to commits@cassandra.apache.org by "Jason Brown (JIRA)" <ji...@apache.org> on 2018/07/22 10:24:00 UTC
[jira] [Resolved] (CASSANDRA-14580) Make
PeriodicCommitLogService.blockWhenSyncLagsNanos configurable
[ https://issues.apache.org/jira/browse/CASSANDRA-14580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jason Brown resolved CASSANDRA-14580.
-------------------------------------
Resolution: Fixed
Committed as sha {{176d4bac22c356c80e275dcb4040bc5cbd0da1c2}}.
> 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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