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https://issues.apache.org/jira/browse/CASSANDRA-9558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14575467#comment-14575467
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Andy Tolbert commented on CASSANDRA-9558:
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It could be that all it would take to get the stress tool back to where it is
in cassandra-2.1 is to simply place cassandra-driver-core-2.0.9.2.jar into
tools/lib/ much like it is on the
[cassandra-2.1|https://github.com/apache/cassandra/tree/cassandra-2.1/tools/lib]
branch. I've tried this in my environment and see a ~15-20% improvement over
'cassandra-2.2 w/ the patch to force protocol v2'.
[~aboudreault], when you have a chance could you try this and let me know how
it goes? All it should take it placing cassandra-driver-core-2.0.9.2 in
tools/lib/.
I've done some investigation and it looks like the regression is present
between java-driver 2.1.5 and 2.1.6 (also observed in 2.0.9.2 and 2.0.10 so it
probably stems from there), I'll continue investigating. I observe very
similar performance with java-driver 2.1.5 /w proto v2 and 2.0.9.2.
> Cassandra-stress regression in 2.2
> ----------------------------------
>
> Key: CASSANDRA-9558
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9558
> Project: Cassandra
> Issue Type: Bug
> Reporter: Alan Boudreault
> Priority: Blocker
> Attachments: 2.1.log, 2.2.log, CASSANDRA-9558-ProtocolV2.patch,
> stress-2.1-java-driver-2.0.9.2.log, stress-2.1-java-driver-2.2+PATCH.log,
> stress-2.1-java-driver-2.2.log, stress-2.2-java-driver-2.2+PATCH.log,
> stress-2.2-java-driver-2.2.log
>
>
> We are seeing some regression in performance when using cassandra-stress 2.2.
> You can see the difference at this url:
> http://riptano.github.io/cassandra_performance/graph_v5/graph.html?stats=stress_regression.json&metric=op_rate&operation=1_write&smoothing=1&show_aggregates=true&xmin=0&xmax=108.57&ymin=0&ymax=168147.1
> The cassandra version of the cluster doesn't seem to have any impact.
> //cc [~tjake] [~benedict]
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