[
https://issues.apache.org/jira/browse/MAPREDUCE-6338?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Frank Nguyen updated MAPREDUCE-6338:
------------------------------------
Attachment: MAPREDUCE-6338.002.patch
Patch was tested with 3 node cluster. After an MR job was submitted, netstat
was ran on the node running MRAppMaster to verify that the IPC ports opened
were within the range defined in the MRJobConfig.MR_AM_JOB_CLIENT_PORT_RANGE
property.
> MR AppMaster does not honor ephemeral port range
> ------------------------------------------------
>
> Key: MAPREDUCE-6338
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6338
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mr-am, mrv2
> Affects Versions: 2.6.0
> Reporter: Frank Nguyen
> Assignee: Frank Nguyen
> Attachments: MAPREDUCE-6338.002.patch
>
>
> The MR AppMaster should only use port ranges defined in the
> yarn.app.mapreduce.am.job.client.port-range property. On initial startup of
> the MRAppMaster, it does use the port range defined in the property.
> However, it also opens up a listener on a random ephemeral port. This is not
> the Jetty listener. It is another listener opened by the MRAppMaster via
> another thread and is recognized by the RM. Other nodes will try to
> communicate to it via that random port. With firewall settings on, the MR
> job will fail because the random port is not opened. This problem has caused
> others to have all OS ephemeral ports opened to have MR jobs run.
> This is related to MAPREDUCE-4079
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
