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https://issues.apache.org/jira/browse/CASSANDRA-9625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15792585#comment-15792585
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Stefan Podkowinski commented on CASSANDRA-9625:
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[~llambiel], I can't see anything that would indicate any deadlocks in your
provided thread dump. In fact {{metrics-graphite-reporter-thread-1}} is just
waiting for the next tick to execute and pull the latest metrics from
Cassandra. Are you sure this isn't a problem with your Graphite installation?
Are there any error messages in Cassandra related to Graphite? Are there any
connections from Cassandra to Graphite (as can be checked using netstat)?
> GraphiteReporter not reporting
> ------------------------------
>
> Key: CASSANDRA-9625
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9625
> Project: Cassandra
> Issue Type: Bug
> Environment: Debian Jessie, 7u79-2.5.5-1~deb8u1, Cassandra 2.1.3
> Reporter: Eric Evans
> Assignee: Stefan Podkowinski
> Attachments: Screen Shot 2016-04-13 at 10.40.58 AM.png, metrics.yaml,
> thread-dump.log, thread-dump2.log
>
>
> When upgrading from 2.1.3 to 2.1.6, the Graphite metrics reporter stops
> working. The usual startup is logged, and one batch of samples is sent, but
> the reporting interval comes and goes, and no other samples are ever sent.
> The logs are free from errors.
> Frustratingly, metrics reporting works in our smaller (staging) environment
> on 2.1.6; We are able to reproduce this on all 6 of production nodes, but not
> on a 3 node (otherwise identical) staging cluster (maybe it takes a certain
> level of concurrency?).
> Attached is a thread dump, and our metrics.yaml.
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