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https://issues.apache.org/jira/browse/CASSANDRA-6943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13950200#comment-13950200
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Benedict edited comment on CASSANDRA-6943 at 3/28/14 12:24 AM:
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A subtle bug in BTree: if we abortEarly, in rare circumstances we fail to clear
the state properly from the builder. Improved long tests to follow.
Well caught.
was (Author: benedict):
A subtle bug in BTree: if we abortEarly, in rare circumstances we fail to clear
the state properly from the builder. Improved long tests to follow.
> very contentious writes result in performance degradation
> ---------------------------------------------------------
>
> Key: CASSANDRA-6943
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6943
> Project: Cassandra
> Issue Type: Bug
> Reporter: Russ Hatch
> Attachments: 6943.txt, node4.log, node4_jstack.log, node5.log,
> node5_jstack.log, node6.log, node6_jstack.log, node7.log, node7_jstack.log,
> screenshot.png, screenshot2.png, stress_jstack.log
>
>
> Running performance scenarios I have seen this characteristic drop in
> performance happen several times. A similar effect was reproduced in another
> test cluster. Operations eventually come to a standstill.
> !screenshot.png!
> !screenshot2.png!
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