Jarosław Bojar created MAHOUT-1560:
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Summary: Last batch is not filled correctly in
MultithreadedBatchItemSimilarities
Key: MAHOUT-1560
URL: https://issues.apache.org/jira/browse/MAHOUT-1560
Project: Mahout
Issue Type: Bug
Components: Collaborative Filtering
Affects Versions: 0.9
Reporter: Jarosław Bojar
Priority: Minor
In {{MultithreadedBatchItemSimilarities}} method {{queueItemIDsInBatches}}
handles last batch incorrectly. Last batch length is calculated incorrectly. As
a result last batch is either truncated or too long with superfluous positions
filled with item indexes from previous batch.
Attached test fails for very short model (with only 4 items) with
NoSuchItemException.
Attached patch corrects this issue.
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