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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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