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  1. Hadoop HDFS
  2. HDFS-15337

Support available space choosing policy in HDFS Persistent Memory Cache

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: caching, datanode
    • Labels:
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    • Target Version/s:

      Description

      In HDFS-13762, we introduced HDFS Persistent Memory Cache feature. In that implementation, if more than one persistent memory volume is specified by user, a simple round-robin policy is used to pick up a volume to cache data. Evidently, the large difference of volume capacity can lead to imbalance issue. 

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            • Assignee:
              PhiloHe Feilong He
              Reporter:
              PhiloHe Feilong He
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              Dates

              • Created:
                Updated: