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  1. HBase
  2. HBASE-14833

HFileOutputFormat2 should allow for custom reducer logic

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: API, mapreduce
    • Labels:
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      Description

      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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              • Assignee:
                Unassigned
                Reporter:
                glal14 Gowtam Lal
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                Dates

                • Created:
                  Updated: