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https://issues.apache.org/jira/browse/MAPREDUCE-3532?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kumar Vavilapalli resolved MAPREDUCE-3532.
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Resolution: Fixed
Release Note: Modified NM to report correct http address when an ephemeral
web port is configured.
Hadoop Flags: Reviewed
I just committed this to trunk and branch-0.23. Thanks Kamesh!
> When 0 is provided as port number in yarn.nodemanager.webapp.address, NMs
> webserver component picks up random port, NM keeps on Reporting 0 port to RM
> ------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-3532
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3532
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2, nodemanager
> Affects Versions: 0.23.1
> Reporter: Karam Singh
> Assignee: Bhallamudi Venkata Siva Kamesh
> Priority: Critical
> Fix For: 0.23.1
>
> Attachments: MAPREDUCE-3532-1.patch, MAPREDUCE-3532.patch
>
>
> I tried following -:
> yarn.nodemanager.address=0.0.0.0:0
> yarn.nodemanager.webapp.address=0.0.0.0:0
> yarn.nodemanager.localizer.address=0.0.0.0:0
> mapreduce.shuffle.port=0
> When 0 is provided as number in yarn.nodemanager.webapp.address.
> NM instantiate WebServer as 0 piort e.g.
> {code}
> 2011-12-08 11:33:02,467 INFO
> org.apache.hadoop.yarn.server.nodemanager.webapp.WebServer: Instantiating
> NMWebApp at 0.0.0.0:0
> {code}
> After that WebServer pick up some random port e.g.
> {code}
> 2011-12-08 11:33:02,562 INFO org.apache.hadoop.http.HttpServer: Jetty bound
> to port 36272
> 2011-12-08 11:33:02,562 INFO org.mortbay.log: jetty-6.1.26
> 2011-12-08 11:33:02,831 INFO org.mortbay.log: Started
> SelectChannelConnector@0.0.0.0:36272
> 2011-12-08 11:33:02,831 INFO org.apache.hadoop.yarn.webapp.WebApps: Web app
> /node started at 36272
> {code}
> And NM WebServer responds correctly but
> RM's cluster/Nodes page shows the following -:
> {code}
> /Rack RUNNING NM:57963 NM:0 Healthy 8-Dec-2011 11:33:01 Healthy 8 12 GB 0 KB
> {code}
> Whereas NM:0 is not clickable.
> Seems even NM's webserver pick random port but it never gets updated and so
> NM report 0 as HTTP port to RM causing NM Hyperlinks un-clickable
> But verified that MR job runs successfully with random.
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