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https://issues.apache.org/jira/browse/LUCENE-5112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler closed LUCENE-5112.
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> FilteringTokenFilter is double incrementing the position increment in
> incrementToken
> ------------------------------------------------------------------------------------
>
> Key: LUCENE-5112
> URL: https://issues.apache.org/jira/browse/LUCENE-5112
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/analysis
> Affects Versions: 4.0
> Reporter: George Rhoten
> Assignee: Uwe Schindler
>
> The following code from FilteringTokenFilter#incrementToken() seems wrong.
> {noformat}
> if (enablePositionIncrements) {
> int skippedPositions = 0;
> while (input.incrementToken()) {
> if (accept()) {
> if (skippedPositions != 0) {
> posIncrAtt.setPositionIncrement(posIncrAtt.getPositionIncrement()
> + skippedPositions);
> }
> return true;
> }
> skippedPositions += posIncrAtt.getPositionIncrement();
> }
> } else {
> {noformat}
> The skippedPositions variable should probably be incremented by 1 instead of
> posIncrAtt.getPositionIncrement(). As it is, it seems to be double
> incrementing, which is a problem if your data is full of stop words and your
> position increment integer overflows.
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