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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5397) AM crashes because Webapp failed to start on multi node cluster
Date Thu, 27 Mar 2014 17:31:20 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13949654#comment-13949654
] 

Jian He commented on MAPREDUCE-5397:
------------------------------------

My impression on this issue was I submitted a job,  the first few attempts(2 or 3) of the
job all failed because of the above reason.  Eventually the last attempt got passed.  But
after I made a clean build and re-deploy the cluster, I couldn't reproduce anymore. Feel free
to reopen this if necessary, and also share some logs. tx

> AM crashes because Webapp failed to start on multi node cluster
> ---------------------------------------------------------------
>
>                 Key: MAPREDUCE-5397
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5397
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Jian He
>            Assignee: Jian He
>         Attachments: log.txt
>
>
> I set up a 12 nodes cluster and tried submitting jobs but get this exception.
> But job is able to succeed after AM crashes and retry a few times(2 or 3)
> {code}
> 2013-07-12 18:56:28,438 INFO [main] org.mortbay.log: Extract jar:file:/grid/0/dev/jhe/hadoop-2.1.0-beta/share/hadoop/yarn/hadoop-yarn-common-2.1.0-beta.jar!/webapps/mapreduce
to /tmp/Jetty_0_0_0_0_43554_mapreduce____ljbmlg/webapp
> 2013-07-12 18:56:28,528 WARN [main] org.mortbay.log: Failed startup of context org.mortbay.jetty.webapp.WebAppContext@2726b2{/,jar:file:/grid/0/dev/jhe/hadoop-2.1.0-beta/share/hadoop/yarn/hadoop-yarn-common-2.1.0-beta.jar!/webapps/mapreduce}
> java.io.FileNotFoundException: /tmp/Jetty_0_0_0_0_43554_mapreduce____ljbmlg/webapp/webapps/mapreduce/.keep
(No such file or directory)
> 	at java.io.FileOutputStream.open(Native Method)
> 	at java.io.FileOutputStream.<init>(FileOutputStream.java:194)
> 	at java.io.FileOutputStream.<init>(FileOutputStream.java:145)
> 	at org.mortbay.resource.JarResource.extract(JarResource.java:215)
> 	at org.mortbay.jetty.webapp.WebAppContext.resolveWebApp(WebAppContext.java:974)
> 	at org.mortbay.jetty.webapp.WebAppContext.getWebInf(WebAppContext.java:832)
> 	at org.mortbay.jetty.webapp.WebInfConfiguration.configureClassLoader(WebInfConfiguration.java:62)
> 	at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:489)
> 	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> 	at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
> 	at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
> 	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> 	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
> 	at org.mortbay.jetty.Server.doStart(Server.java:224)
> 	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> 	at org.apache.hadoop.http.HttpServer.start(HttpServer.java:684)
> 	at org.apache.hadoop.yarn.webapp.WebApps$Builder.start(WebApps.java:211)
> 	at org.apache.hadoop.mapreduce.v2.app.client.MRClientService.serviceStart(MRClientService.java:134)
> 	at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
> 	at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:101)
> 	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.serviceStart(MRAppMaster.java:1019)
> 	at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
> 	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$1.run(MRAppMaster.java:1394)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:396)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1477)
> 	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.initAndStartAppMaster(MRAppMaster.java:1390)
> {code}



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