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  1. Hadoop HDFS
  2. HDFS-10940

Reduce performance penalty of block caching when not used

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.7.0
    • Fix Version/s: 2.8.0, 3.0.0-alpha2
    • Component/s: namenode
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      For every block location generated, the CacheManager will create a junk object for a hash lookup of cached locations. If there are no cached blocks, none of this is required.

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            • Assignee:
              daryn Daryn Sharp
              Reporter:
              daryn Daryn Sharp
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              • Created:
                Updated:
                Resolved: