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From Ian Lea <ian....@gmail.com>
Subject Re: index.merge.scheduler exception - java.io.IOException: Input/output error
Date Mon, 09 Jul 2012 09:28:20 GMT
Is this on a local or remote file system?  Is the file system itself
OK?  Is something else messing with your lucene index at the same
time?


--
Ian.


On Sun, Jul 8, 2012 at 8:58 PM, T Vinod Gupta <tvinod@readypulse.com> wrote:
> Hi,
> My log files are showing the below exceptions almost at twice a minute
> frequency. what is causing it and how can i fix it? I am not using lucene
> directly but instead using elasticsearch (0.18.7 version). but since the
> stack trace is all lucene, i am sending it to this mailing list.
>
> also, my queries are taking a long time to execute (sometimes take a
> minute). could this be contributing to it somehow?
>
> [2012-07-08 19:44:19,887][WARN ][index.merge.scheduler    ] [<my node
> name>] [twitter][4] failed to merge
> java.io.IOException: Input/output error:
> NIOFSIndexInput(path="/media/ephemeral0
> /ES_data/elasticsearch/nodes/0/indices/twitter/4/index/_2h29k.tis")
>         at
> org.apache.lucene.store.NIOFSDirectory$NIOFSIndexInput.readInternal(N
> IOFSDirectory.java:180)
>         at
> org.apache.lucene.store.BufferedIndexInput.refill(BufferedIndexInput.
> java:229)
>         at
> org.apache.lucene.store.BufferedIndexInput.readByte(BufferedIndexInput.java:39)
>         at org.apache.lucene.store.DataInput.readVInt(DataInput.java:105)
>         at
> org.apache.lucene.store.BufferedIndexInput.readVInt(BufferedIndexInput.java:197)
>         at org.apache.lucene.index.TermBuffer.read(TermBuffer.java:86)
>         at
> org.apache.lucene.index.SegmentTermEnum.next(SegmentTermEnum.java:133)
>         at
> org.apache.lucene.index.SegmentMergeInfo.next(SegmentMergeInfo.java:72)
>         at
> org.apache.lucene.index.SegmentMerger.mergeTermInfos(SegmentMerger.java:546)
>         at
> org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:473)
>         at
> org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:109)
>         at
> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4295)
>         at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3940)
>         at
> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:388)
>         at
> org.apache.lucene.index.TrackingConcurrentMergeScheduler.doMerge(TrackingConcurrentMergeScheduler.java:88)
>         at
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:456)
> Caused by: java.io.IOException: Input/output error
>         at sun.nio.ch.FileDispatcher.pread0(Native Method)
>         at sun.nio.ch.FileDispatcher.pread(FileDispatcher.java:49)
>         at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:248)
>         at sun.nio.ch.IOUtil.read(IOUtil.java:224)
>         at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:663)
>         at
> org.apache.lucene.store.NIOFSDirectory$NIOFSIndexInput.readInternal(NIOFSDirectory.java:162)
>         ... 15 more
>
> thanks

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