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  1. HBase
  2. HBASE-4907 Port 89-fb changes to trunk
  3. HBASE-4914

Enhance MapReduce TableInputFormat to Support N-mappers per Region

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    • Sub-task
    • Status: Closed
    • Major
    • Resolution: Won't Fix
    • None
    • None
    • Client, regionserver
    • None

    Description

      Current TableInputFormat based MR jobs create exactly one mapper per region where each mapper sets one Scan with appropriate start/stop row keys. This change allows jobs to be run with any number of mappers per region, so that when a mapper fails, there will be less data to be reprocessed.

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          relates to

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-4063 Improve TableInputFormat to allow application to configure the number of mappers

          • Major - Major loss of function.
          • Closed

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              Unassigned Unassigned
              nspiegelberg Nicolas Spiegelberg
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                Updated:
                Resolved: