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https://issues.apache.org/jira/browse/LUCENE-2327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12846813#action_12846813
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Michael McCandless commented on LUCENE-2327:
--------------------------------------------
This exception looks like index corruption... would be good to get to the root
cause of how this happened.
Your terms dict, which records the field number and character data for each
term, has somehow recorded a field number of 52 when in fact this segment
appears to only have 4 fields.
Can you run CheckIndex on the index and post the result back?
Any prior exceptions when creating this index?
I don't think adding a bounds check to FieldInfos makes sense -- the best we
could do is throw a "FieldNumberOutOfBounds" exception.
> 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
>
> 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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