[
https://issues.apache.org/jira/browse/CASSANDRA-12676?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15646361#comment-15646361
]
Jeff Jirsa commented on CASSANDRA-12676:
----------------------------------------
3.x, maybe, but not 3.0. People who validate releases for prod clusters don't
tend to enjoy hidden config changes mid-branch, especially for options not in
the yaml.
> Message coalescing regression
> -----------------------------
>
> Key: CASSANDRA-12676
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12676
> Project: Cassandra
> Issue Type: Bug
> Reporter: T Jake Luciani
> Labels: docs-impacting
> Fix For: 2.2.x, 3.0.x
>
>
> The default in 2.2+ was to enable TIMEHORIZON message coalescing. After
> reports of performance regressions after upgrading from 2.1 to 2.2/3.0 we
> have discovered the issue to be this default.
> We need to re-test our assumptions on this feature but in the meantime we
> should default back to disabled.
> Here is a performance run [with and without message
> coalescing|http://cstar.datastax.com/graph?command=one_job&stats=9a26b5f2-7f48-11e6-92e7-0256e416528f&metric=op_rate&operation=2_user&smoothing=1&show_aggregates=true&xmin=0&xmax=508.86&ymin=0&ymax=91223]
>
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
