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  1. Hadoop HDFS
  2. HDFS-6581 Write to single replica in memory
  3. HDFS-7142

Implement a 2Q eviction strategy for HDFS-6581

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Details

    • Sub-task
    • Status: Patch Available
    • Major
    • Resolution: Unresolved
    • 2.7.0
    • None
    • datanode
    • None

    Description

      We should implement a 2Q or approximate 2Q eviction strategy for HDFS-6581. It is well known that LRU is a poor fit for scanning workloads, which HDFS may often encounter.

      Attachments

        1. 0002-Add-RamDiskReplica2QTracker.patch
          17 kB
          Colin McCabe
        2. HDFS-7142.003.patch
          16 kB
          Colin McCabe

        Activity

          People

            cmccabe Colin McCabe
            cmccabe Colin McCabe
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            Dates

              Created:
              Updated: