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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2327) IndexOutOfBoundsException in FieldInfos.java
Date Thu, 18 Mar 2010 15:08:27 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12846947#action_12846947
] 

Michael McCandless commented on LUCENE-2327:
--------------------------------------------

Yikes -- you had 10 corrupted segments (of 23) and there's at least 4 different flavors of
corruption across those segments!  Curious...  What storage device did you store the index
on? ;)

Note the that "fix" just drops those segments from the index, so any docs that were in them
are lost.

> 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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