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  1. Pig
  2. PIG-3839 Umbrella jira for Pig on Tez Performance Improvements
  3. PIG-4574

Eliminate identity vertex for order by and skewed join right after LOAD

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Details

    • Sub-task
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.16.0
    • tez
    • None
    • Reviewed

    Description

      If ORDER BY or SKEWED JOIN is the operator immediately following LOAD+FOREACH without any FILTER, then data should be read again from HDFS for the partitioner vertex instead of writing to a identity vertex and reading from it.

      Attachments

        1. PIG-4574-1.patch
          58 kB
          Rohini Palaniswamy
        2. PIG-4574-fix-testfailures.patch
          4 kB
          Rohini Palaniswamy

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              rohini Rohini Palaniswamy
              rohini Rohini Palaniswamy
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              Dates

                Created:
                Updated:
                Resolved: