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  1. HBase
  2. HBASE-14984

Allow memcached block cache to set optimze to false

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.2.0, 1.3.0, 2.0.0
    • Fix Version/s: 1.2.0, 1.3.0, 2.0.0
    • Component/s: BlockCache
    • Labels:
      None
    • Hadoop Flags:
      Reviewed
    • Release Note:
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      Setting hbase.cache.memcached.spy.optimze to true will allow the spy memcached client to try and optimize for the number of requests outstanding. This can increase throughput but can also increase variance for request times.

      Setting it to true will help when round trip times are longer.
      Setting it to false ( the default ) will help ensure a more even distribution of response times.
      Show
      Setting hbase.cache.memcached.spy.optimze to true will allow the spy memcached client to try and optimize for the number of requests outstanding. This can increase throughput but can also increase variance for request times. Setting it to true will help when round trip times are longer. Setting it to false ( the default ) will help ensure a more even distribution of response times.

      Description

      In order to keep latency consistent it might not be good to allow the spy memcached client to optimize.

        Attachments

        1. HBASE-14984.patch
          3 kB
          Elliott Neil Clark

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            • Assignee:
              eclark Elliott Neil Clark
              Reporter:
              eclark Elliott Neil Clark
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              Dates

              • Created:
                Updated:
                Resolved: