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  1. Hadoop HDFS
  2. HDFS-3805

A small improvement of SerialNumberManager$SerialNumberMap.get

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Details

    • Improvement
    • Status: Resolved
    • Trivial
    • Resolution: Invalid
    • 3.0.0-alpha1
    • 3.0.0-alpha1
    • None
    • None

    Description

      Instead of use containsKey() + get() to get the value from the HashMap, we can do get() once and check if the result is null

      Attachments

        1. HDFS-3805.patch
          0.9 kB
          Jing Zhao
        2. HDFS-3805.patch
          0.8 kB
          Jing Zhao

        Issue Links

          is related to

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-2421 Improve the concurrency of SerialNumberMap in NameNode

          • Major - Major loss of function.
          • Closed

          Activity

            People

              jingzhao Jing Zhao
              jingzhao Jing Zhao
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              Dates

                Created:
                Updated:
                Resolved: