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https://issues.apache.org/jira/browse/LUCENE-3377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13086269#comment-13086269
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Martijn van Groningen commented on LUCENE-3377:
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bq. Actually we should probably just hold onto & compare the
IR.getCoreCacheKey().
Seems like a good idea to me.
> TermOrdsIterator#lookup throws ArrayIndexOutOfBoundsException
> -------------------------------------------------------------
>
> Key: LUCENE-3377
> URL: https://issues.apache.org/jira/browse/LUCENE-3377
> Project: Lucene - Java
> Issue Type: Bug
> Affects Versions: 4.0
> Reporter: Martijn van Groningen
> Priority: Minor
>
> TermOrdsIterator's lookup method can throw an ArrayIndexOutOfBoundsException
> if reuse argument is reused acros segments.
> Example collector:
> {code}
> private DocTermOrds.TermOrdsIterator reuse = null;
> public void collect(int doc) throws IOException {
> ...
> reuse = docTermOrds.lookup(doc, reuse);
> ...
> }
> public void setNextReader(IndexReader.AtomicReaderContext context) throws
> IOException {
> docTermOrds = FieldCache.DEFAULT.getDocTermOrds(context.reader, field);
> ....
> }
> {code}
> If reuse argument is always null exception doesn't occur.
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