[ 
https://issues.apache.org/jira/browse/SOLR-9120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15955665#comment-15955665
 ] 

Rondel Ward commented on SOLR-9120:
-----------------------------------

I'm seeing this same issue on Solr 6.4.2. However in my case I also saw this 
error pop up when trying to backup a collection using the CollectionsAPI. 

{quote}
org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException:Error from 
server at http://solrendpoint:8983/solr: Failed to backup 
core=itembuckets_commerce_products_web_index because 
java.nio.file.NoSuchFileException: 
/var/solr/data/itembuckets_commerce_products_web_index/data/index/segments_81
{quote}

*Trace*

{quote}
org.apache.solr.common.SolrException: Could not backup all replicas\n\tat 
org.apache.solr.handler.admin.CollectionsHandler.handleResponse(CollectionsHandler.java:287)\n\tat
 
org.apache.solr.handler.admin.CollectionsHandler.handleRequestBody(CollectionsHandler.java:218)\n\tat
 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:166)\n\tat
 
org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:664)\n\tat
 org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:445)\n\tat 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:345)\n\tat
 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:296)\n\tat
 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1691)\n\tat
 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:582)\n\tat
 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)\n\tat
 
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)\n\tat
 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)\n\tat
 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)\n\tat
 
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)\n\tat 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)\n\tat
 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)\n\tat
 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)\n\tat
 
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)\n\tat
 
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119)\n\tat
 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)\n\tat
 org.eclipse.jetty.server.Server.handle(Server.java:534)\n\tat 
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320)\n\tat 
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)\n\tat
 
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273)\n\tat
 org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)\n\tat 
org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)\n\tat
 
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)\n\tat
 
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)\n\tat
 
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)\n\tat
 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)\n\tat
 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)\n\tat
 java.lang.Thread.run(Thread.java:745)\n
{quote}

Rebuilding the index and then running the backup call again resolved my issue 
but now I'm concerned that this issue might be more than just noise in the 
logs. 

> o.a.s.h.a.LukeRequestHandler Error getting file length for [segments_NNN] -- 
> NoSuchFileException
> ------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-9120
>                 URL: https://issues.apache.org/jira/browse/SOLR-9120
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 6.0
>            Reporter: Markus Jelsma
>
> On Solr 6.0, we frequently see the following errors popping up:
> {code}
> java.nio.file.NoSuchFileException: 
> /var/lib/solr/logs_shard2_replica1/data/index/segments_2c5
>       at 
> sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
>       at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
>       at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
>       at 
> sun.nio.fs.UnixFileAttributeViews$Basic.readAttributes(UnixFileAttributeViews.java:55)
>       at 
> sun.nio.fs.UnixFileSystemProvider.readAttributes(UnixFileSystemProvider.java:144)
>       at 
> sun.nio.fs.LinuxFileSystemProvider.readAttributes(LinuxFileSystemProvider.java:99)
>       at java.nio.file.Files.readAttributes(Files.java:1737)
>       at java.nio.file.Files.size(Files.java:2332)
>       at org.apache.lucene.store.FSDirectory.fileLength(FSDirectory.java:243)
>       at 
> org.apache.lucene.store.NRTCachingDirectory.fileLength(NRTCachingDirectory.java:131)
>       at 
> org.apache.solr.handler.admin.LukeRequestHandler.getFileLength(LukeRequestHandler.java:597)
>       at 
> org.apache.solr.handler.admin.LukeRequestHandler.getIndexInfo(LukeRequestHandler.java:585)
>       at 
> org.apache.solr.handler.admin.LukeRequestHandler.handleRequestBody(LukeRequestHandler.java:137)
>       at 
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:155)
>       at org.apache.solr.core.SolrCore.execute(SolrCore.java:2033)
>       at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:652)
>       at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:460)
>       at 
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:229)
>       at 
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:184)
>       at 
> org.eclipse.jetty.servlet.ServletHandler$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)
> {code}



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