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From "Alan Woodward (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-7940) [CollectionAPI] Frequent Cluster Status timeout
Date Tue, 01 Dec 2015 09:12:10 GMT

    [ https://issues.apache.org/jira/browse/SOLR-7940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15033373#comment-15033373
] 

Alan Woodward commented on SOLR-7940:
-------------------------------------

I think this has been fixed by SOLR-7636?

> [CollectionAPI] Frequent Cluster Status timeout
> -----------------------------------------------
>
>                 Key: SOLR-7940
>                 URL: https://issues.apache.org/jira/browse/SOLR-7940
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>    Affects Versions: 4.10.2
>         Environment: Ubuntu on Azure
>            Reporter: Stephan Lagraulet
>
> Very often we have a timeout when we call http://server2:8080/solr/admin/collections?action=CLUSTERSTATUS&wt=json
> {code}
> {"responseHeader": 
> {"status": 500,
> "QTime": 180100},
> "error": 
> {"msg": "CLUSTERSTATUS the collection time out:180s",
> "trace": "org.apache.solr.common.SolrException: CLUSTERSTATUS the collection time out:180s\n\tat
org.apache.solr.handler.admin.CollectionsHandler.handleResponse(CollectionsHandler.java:368)\n\tat
org.apache.solr.handler.admin.CollectionsHandler.handleResponse(CollectionsHandler.java:320)\n\tat
org.apache.solr.handler.admin.CollectionsHandler.handleClusterStatus(CollectionsHandler.java:640)\n\tat
org.apache.solr.handler.admin.CollectionsHandler.handleRequestBody(CollectionsHandler.java:220)\n\tat
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)\n\tat
org.apache.solr.servlet.SolrDispatchFilter.handleAdminRequest(SolrDispatchFilter.java:729)\n\tat
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:267)\n\tat org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:207)\n\tat
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1338)\n\tat
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:484)\n\tat org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)\n\tat
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)\n\tat org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233)\n\tat
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1065)\n\tat org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:413)\n\tat
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)\n\tat org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:999)\n\tat
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)\n\tat org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)\n\tat
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149)\n\tat
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)\n\tat org.eclipse.jetty.server.Server.handle(Server.java:350)\n\tat
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:454)\n\tat
org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:890)\n\tat
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:944)\n\tat
org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:630)\n\tat org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230)\n\tat
org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:77)\n\tat org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:606)\n\tat
org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:46)\n\tat
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:603)\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:538)\n\tat
java.lang.Thread.run(Thread.java:745)\n",
> "code": 500}}
> {code}
> The cluster has 3 SolR nodes with 6 small collections replicated on all nodes.
> We were using this api to monitor cluster state but it was failing every 10 minutes.
We switched by using ZkStateReader in CloudSolrServer and it has been working for a day without
problems.
> Is there a kind of deadlock as this call was been made on the three nodes concurrently?



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