[jira] [Updated] (SOLR-9861) Support Cross Data Center Replication under HDFS

["Kevin Risden (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-9861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kevin Risden updated SOLR-9861:
-------------------------------
    Component/s: hdfs
                 Hadoop Integration

> Support Cross Data Center Replication under HDFS
> ------------------------------------------------
>
>                 Key: SOLR-9861
>                 URL: https://issues.apache.org/jira/browse/SOLR-9861
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: CDCR, Hadoop Integration, hdfs
>    Affects Versions: 6.3
>            Reporter: Gero Willmes
>            Priority: Major
>
> Currently Solr Cloud does not support CDCR under HDFS (according to http://search-lucene.com/m/Solr/eHNlLSriaVCpuU1?subj=Re+Using+Solr+CDCR+with+HdfsDirectoryFactory). 
> If the CDCR configuration is performed according to
> https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=62687462
> and at the same time the HdfsDirectoryFactory is configured on both Source cluster and Target cluster according to
> https://cwiki.apache.org/confluence/display/solr/Running+Solr+on+HDFS
> it leads to the following error message during reload of the collection “collection_source” of the source cluster:
> {code}
> 2016-11-23 12:05:35.604 ERROR (qtp1134712904-8045) [c:collection_source s:shard1 r:core_node1 x:collection_source_shard1_replica1] o.a.s.s.HttpSolrCall null:org.apache.solr.common.SolrException: Error handling 'reload' action
>         at org.apache.solr.handler.admin.CoreAdminOperation$3.call(CoreAdminOperation.java:150)
>         at org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:367)
>         at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:158)
>         at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:156)
>         at org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:663)
>         at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:445)
>         at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:257)
>         at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:208)
>         at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668)
>         at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581)
>         at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
>         at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
>         at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
>         at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1160)
>         at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)
>         at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
>         at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1092)
>         at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
>         at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)
>         at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119)
>         at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
>         at org.eclipse.jetty.server.Server.handle(Server.java:518)
>         at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308)
>         at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:244)
>         at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273)
>         at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
>         at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
>         at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:246)
>         at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:156)
>         at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
>         at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
>         at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.solr.common.SolrException: Unable to reload core [collection_source_shard1_replica1]
>         at org.apache.solr.core.CoreContainer.reload(CoreContainer.java:920)
>         at org.apache.solr.handler.admin.CoreAdminOperation$3.call(CoreAdminOperation.java:148)
>         ... 31 more
> Caused by: org.apache.solr.common.SolrException: Solr instance is not configured with the cdcr update log.
> {code}
> However, the solr instance was configured correctly. CDCR should work in the same way with HdfsDirectoryFactory as it works with StandardDirectoryFactory or NRTCachingDirectoryFactory.



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