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https://issues.apache.org/jira/browse/SOLR-7069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Forest Soup updated SOLR-7069:
------------------------------
Attachment: Untitled.png
A "down" core on an active node.
> A down core(shard replica) on an active node cannot failover the query to its
> good peer
> ---------------------------------------------------------------------------------------
>
> Key: SOLR-7069
> URL: https://issues.apache.org/jira/browse/SOLR-7069
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 4.7
> Reporter: Forest Soup
> Attachments: Untitled.png
>
>
> When querying a collection with a core in "down" state, if we send the
> request to the server containing the "down" core, while the server is active,
> it cannot failover to the good replica of same shard on another server.
> The steps to make a core "down" on an active server is:
> 1, delete the content of the data folder of the core
> 2, restart the solr server the core locates.
> Then we can see the core is "down" while other cores on the same server is
> still active. See attached picture.
> When we issue a query to the collection, if we send the request to the server
> containing the "down" core, we receive below errors:
> HTTP Status 500 - {msg=SolrCore 'collection5_shard1_replica2' is not
> available due to init failure: Error opening new
> searcher,trace=org.apache.solr.common.SolrException: SolrCore
> 'collection5_shard1_replica2' is not available due to init failure: Error
> opening new searcher at
> org.apache.solr.core.CoreContainer.getCore(CoreContainer.java:827) at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:309)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:217)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
> at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
> at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
> at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1156)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:626)
> at
> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
> at java.lang.Thread.run(Thread.java:804) Caused by:
> org.apache.solr.common.SolrException: Error opening new searcher at
> org.apache.solr.core.SolrCore.<init>(SolrCore.java:844) at
> org.apache.solr.core.SolrCore.<init>(SolrCore.java:630) at
> org.apache.solr.core.ZkContainer.createFromZk(ZkContainer.java:244) at
> org.apache.solr.core.CoreContainer.create(CoreContainer.java:595) at
> org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:258) at
> org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:250) at
> java.util.concurrent.FutureTask.run(FutureTask.java:273) at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:482) at
> java.util.concurrent.FutureTask.run(FutureTask.java:273) at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1156)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:626)
> ... 1 more Caused by: org.apache.solr.common.SolrException: Error opening
> new searcher at
> org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1521) at
> org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1633) at
> org.apache.solr.core.SolrCore.<init>(SolrCore.java:827) ... 11 more Caused
> by: java.io.FileNotFoundException:
> /mnt/solrdata1/solr/home/collection5_shard1_replica2/data/index/_12x.si (No
> such file or directory) at
> java.io.RandomAccessFile.<init>(RandomAccessFile.java:252) at
> org.apache.lucene.store.MMapDirectory.openInput(MMapDirectory.java:193) at
> org.apache.lucene.store.NRTCachingDirectory.openInput(NRTCachingDirectory.java:233)
> at
> org.apache.lucene.codecs.lucene46.Lucene46SegmentInfoReader.read(Lucene46SegmentInfoReader.java:49)
> at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:340) at
> org.apache.lucene.index.SegmentInfos$1.doBody(SegmentInfos.java:404) at
> org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:843)
> at
> org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:694)
> at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:400) at
> org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:741) at
> org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:77) at
> org.apache.solr.update.SolrIndexWriter.create(SolrIndexWriter.java:64) at
> org.apache.solr.update.DefaultSolrCoreState.createMainIndexWriter(DefaultSolrCoreState.java:267)
> at
> org.apache.solr.update.DefaultSolrCoreState.getIndexWriter(DefaultSolrCoreState.java:110)
> at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1484) ... 13
> more ,code=500}
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