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From "Chris Trezzo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6117) SharedCacheManager does not start up
Date Tue, 24 Jan 2017 19:24:26 GMT

    [ https://issues.apache.org/jira/browse/YARN-6117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15836482#comment-15836482
] 

Chris Trezzo commented on YARN-6117:
------------------------------------

Thanks [~sjlee0]! I think it would be good to backport to branch-2 and hopefully branch-2.8
so that we have a working shared cache in future 2.x releases. Let me know what you think.

> SharedCacheManager does not start up
> ------------------------------------
>
>                 Key: YARN-6117
>                 URL: https://issues.apache.org/jira/browse/YARN-6117
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.7.3, 3.0.0-alpha2
>            Reporter: Chris Trezzo
>            Assignee: Chris Trezzo
>             Fix For: 3.0.0-alpha3
>
>         Attachments: YARN-6117-trunk.001.patch
>
>
> The webapp directory for the SharedCacheManager is missing and the SCM fails to start
up with the following:
> {noformat}
> 2017-01-22 00:14:25,162 INFO org.apache.hadoop.service.AbstractService: Service SharedCacheManager
failed in state STARTED; cause: org.apache.hadoop.yarn.webapp.WebAppException: Error starting
http server
> org.apache.hadoop.yarn.webapp.WebAppException: Error starting http server
>         at org.apache.hadoop.yarn.webapp.WebApps$Builder.build(WebApps.java:330)
>         at org.apache.hadoop.yarn.webapp.WebApps$Builder.start(WebApps.java:377)
>         at org.apache.hadoop.yarn.webapp.WebApps$Builder.start(WebApps.java:373)
>         at org.apache.hadoop.yarn.server.sharedcachemanager.webapp.SCMWebServer.serviceStart(SCMWebServer.java:65)
>         at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
>         at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:120)
>         at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
>         at org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.main(SharedCacheManager.java:157)
> Caused by: java.io.FileNotFoundException: webapps/sharedcache not found in CLASSPATH
>         at org.apache.hadoop.http.HttpServer2.getWebAppsPath(HttpServer2.java:972)
>         at org.apache.hadoop.http.HttpServer2.<init>(HttpServer2.java:478)
>         at org.apache.hadoop.http.HttpServer2.<init>(HttpServer2.java:117)
>         at org.apache.hadoop.http.HttpServer2$Builder.build(HttpServer2.java:392)
>         at org.apache.hadoop.yarn.webapp.WebApps$Builder.build(WebApps.java:291)
>         ... 7 more
> {noformat}



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