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https://issues.apache.org/jira/browse/HBASE-14833?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Kyle Purtell resolved HBASE-14833.
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Resolution: Not A Problem
> HFileOutputFormat2 should allow for custom reducer logic
> --------------------------------------------------------
>
> Key: HBASE-14833
> URL: https://issues.apache.org/jira/browse/HBASE-14833
> Project: HBase
> Issue Type: Improvement
> Components: API, mapreduce
> Reporter: Gowtam Lal
> Priority: Minor
>
> Right now, HFileOutputFormat2.configureIncrementalLoad() will configure a
> ReducerClass which takes all input and passes it through to be written to an
> HFile. Unfortunately, this prevents a user from plugging in his or her own
> logic for the Reduce phase.
> TableMapReduceUtil.initTableReducerJob() accepts a custom ReducerClass,
> allowing users to operate on the tuples coming out of the MapperClass before
> they're written to output. Could
> HFileOutputFormat2.configureIncrementalLoad() possibly do something similar?
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