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  1. Hadoop HDFS
  2. HDFS-14882

Consider DataNode load when #getBlockLocation

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 3.3.0
    • namenode
    • None

    Description

      Currently, we consider load of datanode when #chooseTarget for writer, however not consider it for reader. Thus, the process slot of datanode could be occupied by #BlockSender for reader, and disk/network will be busy workload, then meet some slow node exception. IIRC same case is reported times. Based on the fact, I propose to consider load for reader same as it did #chooseTarget for writer.

      Attachments

        1. HDFS-14882.001.patch
          7 kB
          Xiaoqiao He
        2. HDFS-14882.002.patch
          7 kB
          Xiaoqiao He
        3. HDFS-14882.003.patch
          8 kB
          Xiaoqiao He
        4. HDFS-14882.004.patch
          11 kB
          Xiaoqiao He
        5. HDFS-14882.005.patch
          10 kB
          Xiaoqiao He
        6. HDFS-14882.006.patch
          10 kB
          Xiaoqiao He
        7. HDFS-14882.007.patch
          10 kB
          Xiaoqiao He
        8. HDFS-14882.008.patch
          10 kB
          Xiaoqiao He
        9. HDFS-14882.suggestion
          15 kB
          István Fajth
        10. HDFS-14882.009.patch
          13 kB
          Xiaoqiao He
        11. HDFS-14882.010.patch
          18 kB
          Xiaoqiao He

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. HDFS-15285 The same distance and load nodes don't shuffle when consider DataNode load

          • Major - Major loss of function.
          • Resolved

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            People

              hexiaoqiao Xiaoqiao He
              hexiaoqiao Xiaoqiao He
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              Dates

                Created:
                Updated:
                Resolved: