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https://issues.apache.org/jira/browse/HADOOP-9704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14011294#comment-14011294
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Babak Behzad commented on HADOOP-9704:
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Thanks Ravi. So, in order to enable this one has to put the following three
lines in etc/hadoop-metrics2.properties for each of the contexts (namenode,
datanode, resource manager, etc):
namenode.sink.graphite.server_host=localhost
namenode.sink.graphite.server_port=2003
namenode.sink.graphite.metrics_prefix=test.namenode
Looking at the logs and source code, the socket connection is only created once
in the init() function for each of these contexts that you enable them, so at
most 5 new connections are created. This is exactly the same as other sinks
such as FileSink and GangliaSink and I don't think it is an issue.
Regarding a slow Graphite server, that's a good point. We will be able to test
this soon, but again looking at the current Hadoop code, Ganglia's sink is
using DatagramSocket instead of Socket. I am not sure if we need to do that
later if we see problems with the current code.
> Write metrics sink plugin for Hadoop/Graphite
> ---------------------------------------------
>
> Key: HADOOP-9704
> URL: https://issues.apache.org/jira/browse/HADOOP-9704
> Project: Hadoop Common
> Issue Type: New Feature
> Affects Versions: 2.0.3-alpha
> Reporter: Chu Tong
> Attachments:
> 0001-HADOOP-9704.-Write-metrics-sink-plugin-for-Hadoop-Gr.patch,
> HADOOP-9704.patch, HADOOP-9704.patch, Hadoop-9704.patch
>
>
> Write a metrics sink plugin for Hadoop to send metrics directly to Graphite
> in additional to the current ganglia and file ones.
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