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  1. Hadoop HDFS
  2. HDFS-6591

while loop is executed tens of thousands of times in Hedged Read

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 2.4.0
    • 2.5.0
    • hdfs-client
    • None
    • Reviewed

    Description

      I download hadoop-2.4.1-rc1 code from http://people.apache.org/~acmurthy/hadoop-2.4.1-rc1/, I test the Hedged Read. I find the while loop in hedgedFetchBlockByteRange method is executed tens of thousands of times.

      Attachments

        1. HDFS-6591.txt
          17 kB
          Liang Xie
        2. HDFS-6591-v2.txt
          18 kB
          Liang Xie
        3. HDFS-6591-v3.txt
          18 kB
          Liang Xie
        4. HDFS-6591-v4.txt
          17 kB
          Liang Xie
        5. LoopTooManyTimesTestCase.patch
          7 kB
          LiuLei

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            xieliang007 Liang Xie
            liulei.cn LiuLei
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            Dates

              Created:
              Updated:
              Resolved:

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