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From "Shane (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-2327) IndexOutOfBoundsException in FieldInfos.java
Date Wed, 17 Mar 2010 17:25:27 GMT
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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