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Posted to java-user@lucene.apache.org by Jamie <ja...@stimulussoft.com> on 2008/04/24 07:53:51 UTC

MergePolicy Exception

Hi there

I am using the latest version of Lucene and have ten threads indexing 
documents. I am getting the following errors appearing on a continual 
basis during the indexing process:

Exception in thread "Thread-569" 
org.apache.lucene.index.MergePolicy$MergeException: 
java.io.FileNotFoundException: /index/index1/_48.cfs (No such file or 
directory)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:271)
Caused by: java.io.FileNotFoundException: /index/index1/_48.cfs (No such 
file or directory)
        at java.io.RandomAccessFile.open(Native Method)
        at java.io.RandomAccessFile.<init>(Unknown Source)
        at 
org.apache.lucene.store.FSDirectory$FSIndexInput$Descriptor.<init>(FSDirectory.java:506)
        at 
org.apache.lucene.store.FSDirectory$FSIndexInput.<init>(FSDirectory.java:536)
        at 
org.apache.lucene.store.FSDirectory.openInput(FSDirectory.java:445)
        at 
org.apache.lucene.index.CompoundFileReader.<init>(CompoundFileReader.java:70)
        at 
org.apache.lucene.index.SegmentReader.initialize(SegmentReader.java:277)
        at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:262)
        at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:221)
        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3099)
        at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:2834)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:240)

Any idea on what this might be?

Jamie



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Re: MergePolicy Exception

Posted by Michael McCandless <lu...@mikemccandless.com>.
This is some sort of index corruption.  The merge policy wants to  
merge that segment (_48) but it has apparently been deleted from your  
index.  Likely if you try to run CheckIndex, optimize, or open a  
reader, you'd get a similar exception.

Is this repeatable?  Can you describe your application in more  
detail, or post the source fragments that open, add docs, and close  
the index?  Were there any prior exceptions before this one?

Was this a single indexing run, or did you close/open the IndexWriter  
multiple times?

Mike

Jamie wrote:
> Hi there
>
> I am using the latest version of Lucene and have ten threads  
> indexing documents. I am getting the following errors appearing on  
> a continual basis during the indexing process:
>
> Exception in thread "Thread-569" org.apache.lucene.index.MergePolicy 
> $MergeException: java.io.FileNotFoundException: /index/index1/ 
> _48.cfs (No such file or directory)
>        at org.apache.lucene.index.ConcurrentMergeScheduler 
> $MergeThread.run(ConcurrentMergeScheduler.java:271)
> Caused by: java.io.FileNotFoundException: /index/index1/_48.cfs (No  
> such file or directory)
>        at java.io.RandomAccessFile.open(Native Method)
>        at java.io.RandomAccessFile.<init>(Unknown Source)
>        at org.apache.lucene.store.FSDirectory$FSIndexInput 
> $Descriptor.<init>(FSDirectory.java:506)
>        at org.apache.lucene.store.FSDirectory$FSIndexInput.<init> 
> (FSDirectory.java:536)
>        at org.apache.lucene.store.FSDirectory.openInput 
> (FSDirectory.java:445)
>        at org.apache.lucene.index.CompoundFileReader.<init> 
> (CompoundFileReader.java:70)
>        at org.apache.lucene.index.SegmentReader.initialize 
> (SegmentReader.java:277)
>        at org.apache.lucene.index.SegmentReader.get 
> (SegmentReader.java:262)
>        at org.apache.lucene.index.SegmentReader.get 
> (SegmentReader.java:221)
>        at org.apache.lucene.index.IndexWriter.mergeMiddle 
> (IndexWriter.java:3099)
>        at org.apache.lucene.index.IndexWriter.merge 
> (IndexWriter.java:2834)
>        at org.apache.lucene.index.ConcurrentMergeScheduler 
> $MergeThread.run(ConcurrentMergeScheduler.java:240)
>
> Any idea on what this might be?
>
> Jamie
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>


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