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https://issues.apache.org/jira/browse/HADOOP-12357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14715207#comment-14715207
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Dave Marion commented on HADOOP-12357:
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Looks like GraphiteSink was refactored in branch-2.7, but does not have any
different functionality. Might be able to backport this all the way back to
branch-2.6 with no harm.
> GraphiteSink won't connect to UDP sockets
> -----------------------------------------
>
> Key: HADOOP-12357
> URL: https://issues.apache.org/jira/browse/HADOOP-12357
> Project: Hadoop Common
> Issue Type: Bug
> Components: metrics
> Affects Versions: 2.5.0, 2.5.1, 2.5.2, 2.6.0, 2.7.0, 2.7.1
> Reporter: Dave Marion
> Assignee: Dave Marion
> Priority: Minor
> Attachments: HADOOP-12357.001.patch, HADOOP-12357.002.patch
>
>
> The statsd plugin within CollectD listens on a UDP socket. In trying to set
> this up, I keep getting a connection refused error, and I think the issue is
> that the current implementation of GraphiteSink only uses a TCP socket.
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