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https://issues.apache.org/jira/browse/CASSANDRA-2170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13106828#comment-13106828
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Jason Harvey commented on CASSANDRA-2170:
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I did a couple more thread dumps on spiking nodes. One interesting thing I'm
seeing is that there are a high number of NBHM threads in the runnable state
during the load spikes. One the dumps I analyzed, there were often 200-300 of
these threads in RUNNABLE.
Here is an example of the threads: https://gist.github.com/ef215227b85bdff5f033
> Load spikes
> -----------
>
> Key: CASSANDRA-2170
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2170
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 0.6.11
> Reporter: Jonathan Ellis
> Assignee: Brandon Williams
>
> as reported on CASSANDRA-2058, some users are still seeing load spikes on
> 0.6.11, even with fairly low-volume read workloads.
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