Remove a mapreduce job from parallel FPGrowth workflow
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Key: MAHOUT-920
URL: https://issues.apache.org/jira/browse/MAHOUT-920
Project: Mahout
Issue Type: Improvement
Components: Frequent Itemset/Association Rule Mining
Affects Versions: 0.6
Reporter: tom pierce
Priority: Minor
The transaction sorting job could have been made map-only, and another
mapreduce job follows, so it made sense to combine them. It would have been
possible to use a ChainMapper approach, but it seemed simpler to fold the
functionality into the following mapper (ParallelFPGrowthMapper). The attached
patch does just that.
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