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  1. Parquet
  2. PARQUET-177

MemoryManager ensure minimum Column Chunk size

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 1.6.0
    • Fix Version/s: 1.6.0
    • Component/s: parquet-mr
    • Labels:
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      Description

      The memory manager currently has no limit to how small it will make row groups. This is problematic because jobs that have a large number of writers can result in tiny row groups that hurt performance.

      The following patch will allow a configurable minimum size before killing the job. Default is currently no limit.

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              • Assignee:
                dweeks-netflix Daniel Weeks
                Reporter:
                dweeks-netflix Daniel Weeks
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                • Created:
                  Updated:
                  Resolved: