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  1. Hadoop HDFS
  2. HDFS-6581 Write to single replica in memory
  3. HDFS-7112

LazyWriter should use either async IO or one thread per physical disk

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    Details

    • Type: Sub-task
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: HDFS-6581
    • Fix Version/s: 2.6.0
    • Component/s: datanode
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      The LazyWriter currently uses synchronous IO and a single thread. This limits the throughput to that of a single disk. Using either async overlapped IO or one thread per physical disk will improve the write throughput.

        Attachments

        1. HDFS-7112.0.patch
          27 kB
          Xiaoyu Yao
        2. HDFS-7112.1.patch
          27 kB
          Xiaoyu Yao
        3. HDFS-7112.2.patch
          27 kB
          Xiaoyu Yao
        4. HDFS-7112.3.patch
          28 kB
          Xiaoyu Yao

          Activity

            People

            • Assignee:
              xyao Xiaoyu Yao
              Reporter:
              arp Arpit Agarwal
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              Watchers:
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              Dates

              • Created:
                Updated:
                Resolved: