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List:       solr-user
Subject:    Error opening new searcher due to LockObtainFailedException
From:       Sundeep T <sundeep.t16 () gmail ! com>
Date:       2017-08-30 22:24:10
Message-ID: CAJ6zLTVFsTrzpm_EroqkapLfa2axGokGQkBR1ZsVT=UXqxT=fQ () mail ! gmail ! com
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Hello,

Occasionally we are seeing errors opening new searcher for certain solr
cores. Whenever this happens, we are unable to query or ingest new data
into these cores. It seems to clear up after some time though. The root
cause seems to be - *"org.apache.lucene.store.LockObtainFailedException:
Lock held by this virtual machine:
/opt/solr/volumes/data9/7d50b38e114af075-core-24/data/index/write.lock"*

Below is the full stack trace. Any ideas on what could be going on that
causes such an exception and how to mitigate this? thanks a lot for your
help!

Unable to create core
[7d50b38e114af075-core-24],trace=org.apache.solr.common.SolrException:
Unable to create core [7d50b38e114af075-core-24]
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:903)
at org.apache.solr.core.CoreContainer.getCore(CoreContainer.java:1167)
at org.apache.solr.servlet.HttpSolrCall.init(HttpSolrCall.java:252)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:418)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:345)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:296)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1691)
 at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:582)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)
 at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
at org.eclipse.jetty.server.Server.handle(Server.java:534)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
at
org.eclipse.jetty.io.AbstractConnection$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.executeProduceConsume(ExecuteProduceConsume.java:303)
 at
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
 at
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
 at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.solr.common.SolrException: Error opening new searcher
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:952)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:816)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:890)
... 30 more
Caused by: org.apache.solr.common.SolrException: Error opening new searcher
at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1891)
at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:2011)
at org.apache.solr.core.SolrCore.initSearcher(SolrCore.java:1041)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:925)
... 32 more
Caused by: org.apache.lucene.store.LockObtainFailedException: Lock held by
this virtual machine:
/opt/solr/volumes/data9/7d50b38e114af075-core-24/data/index/write.lock
at
org.apache.lucene.store.NativeFSLockFactory.obtainFSLock(NativeFSLockFactory.java:127)
 at org.apache.lucene.store.FSLockFactory.obtainLock(FSLockFactory.java:41)
at org.apache.lucene.store.BaseDirectory.obtainLock(BaseDirectory.java:45)
at
org.apache.lucene.store.FilterDirectory.obtainLock(FilterDirectory.java:104)
at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:804)
at org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:125)
at org.apache.solr.update.SolrIndexWriter.create(SolrIndexWriter.java:100)
at
org.apache.solr.update.DefaultSolrCoreState.createMainIndexWriter(DefaultSolrCoreState.java:240)
 at
org.apache.solr.update.DefaultSolrCoreState.getIndexWriter(DefaultSolrCoreState.java:114)
 at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1852)
... 35 more
,code=500}```



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