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  1. Apache Tez
  2. TEZ-2105

Totally Sorted Edge with auto-parallelism

    Details

    • Type: New Feature
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None

      Description

      Pig-on-Tez supports an edge configuration using a sampled Output along with a vertex manager for automatic parallelism estimation.

      This is referred to in the Pig-on-Tez Hadoop Summit presentation.

      http://www.slideshare.net/Hadoop_Summit/pig-on-tez-low-latency-etl-with-big-data/19

      Migrating that plan-model into Tez as a native edge type would allow for much more efficient scheduling of the downstream edges and effectively turn the auto-parallelism implementation into a runtime skew-correcting mechanism within this edge.

      The Tez Edge has enough information to sample, determine partitioning order and correct parallelism.

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            • Assignee:
              Unassigned
              Reporter:
              gopalv Gopal V
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              Dates

              • Created:
                Updated: