[LUCENE-2327] IndexOutOfBoundsException in FieldInfos.java

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Invalid
• Affects Version/s: 3.0.1
• Component/s: core/index
• Labels: fedora_12 search tomcat

Environment

Fedora 12

• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Shane
• Created: 17/Mar/10 17:24
• Updated: 28/Aug/22 12:22
• Resolved: 18/Mar/10 15:49

Description

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.