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From "Shane (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2327) IndexOutOfBoundsException in FieldInfos.java
Date Thu, 18 Mar 2010 15:18:28 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12846954#action_12846954
] 

Shane commented on LUCENE-2327:
-------------------------------

I believe at the time we were storing on a NAS via NFS.  If my memory serves me well, there
were known issues with running Lucene over NFS at the time.   We were experiencing issues
with the file system at the time so have since moved to a different architecture. 

Also, I was aware that the fix drops the segments, but thanks anyway. :)

> IndexOutOfBoundsException in FieldInfos.java
> --------------------------------------------
>
>                 Key: LUCENE-2327
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2327
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>    Affects Versions: 3.0.1
>         Environment: Fedora 12
>            Reporter: Shane
>            Priority: Minor
>         Attachments: CheckIndex.txt
>
>
> When retrieving the scoreDocs from a multisearcher, the following exception is thrown:
> java.lang.IndexOutOfBoundsException: Index: 52, Size: 4
>         at java.util.ArrayList.rangeCheck(ArrayList.java:571)
>         at java.util.ArrayList.get(ArrayList.java:349)
>         at org.apache.lucene.index.FieldInfos.fieldInfo(FieldInfos.java:285)
>         at org.apache.lucene.index.FieldInfos.fieldName(FieldInfos.java:274)
>         at org.apache.lucene.index.TermBuffer.read(TermBuffer.java:86)
>         at org.apache.lucene.index.SegmentTermEnum.next(SegmentTermEnum.java:131)
>         at org.apache.lucene.index.SegmentTermEnum.scanTo(SegmentTermEnum.java:162)
>         at org.apache.lucene.index.TermInfosReader.get(TermInfosReader.java:232)
>         at org.apache.lucene.index.TermInfosReader.get(TermInfosReader.java:179)
>         at org.apache.lucene.index.SegmentReader.docFreq(SegmentReader.java:911)
>         at org.apache.lucene.index.DirectoryReader.docFreq(DirectoryReader.java:644)
> The error is caused when the fieldNumber passed to FieldInfos.fieldInfo() is greater
than the size of array list containing the FieldInfo values.  I am not sure what the field
number represents or why it would be larger than the array list's size.  The quick fix would
be to validate the bounds but there may be a bigger underlying problem.  The issue does appear
to be directly related to LUCENE-939.  I've only been able to duplicate this in my production
environment and so can't give a good test case.

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