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https://issues.apache.org/jira/browse/CASSANDRA-9683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14629983#comment-14629983
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Ariel Weisberg commented on CASSANDRA-9683:
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[~llambiel] I still don't follow how you could do quorum writes at the latency
you were seeing initially. 200 microseconds is really quite low for a quorum
write. I need to know how you are measuring latency and I really need steps to
reproduce. If you shrink the cluster temporarily to one node do you still see
the regression?
> Get mucher higher load and latencies after upgrading from 2.1.6 to cassandra
> 2.1.7
> ----------------------------------------------------------------------------------
>
> Key: CASSANDRA-9683
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9683
> Project: Cassandra
> Issue Type: Bug
> Environment: Ubuntu 12.04 (3.13 Kernel) * 3
> JDK: Oracle JDK 7
> RAM: 32GB
> Cores 4 (+4 HT)
> Reporter: Loic Lambiel
> Assignee: Ariel Weisberg
> Fix For: 2.1.x
>
> Attachments: cassandra-env.sh, cassandra.yaml, cfstats.txt,
> os_load.png, pending_compactions.png, read_latency.png, schema.txt,
> system.log, write_latency.png
>
>
> After upgrading our cassandra staging cluster version from 2.1.6 to 2.1.7,
> the average load grows from 0.1-0.3 to 1.8.
> Latencies did increase as well.
> We see an increase of pending compactions, probably due to CASSANDRA-9592.
> This cluster has almost no workload (staging environment)
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