Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-504

HDFS updates the modification time of a file when the file is closed.

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Minor Minor
    • Resolution: Fixed
    • Affects Version/s: 0.20.1
    • Fix Version/s: 0.21.0
    • Component/s: namenode
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      Current HDFS updates the modification time of a file when the file is created. We would like to update the modification time of the file when the file is closed after being written to. This helps HDFS Raid to detect file changes more aggressively.

      Solution includes:
      1. Made changes to closeFile@/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java;
      2. Added unit test to testTimesAtClose@/org/apache/hadoop/hdfs/TestSetTimes.java.

      1. pathfile.txt
        4 kB
        Chun Zhang
      2. pathfile.txt
        4 kB
        Chun Zhang
      3. pathfile.txt
        7 kB
        Chun Zhang
      4. pathfile.txt
        17 kB
        Chun Zhang

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          People

          • Assignee:
            Chun Zhang
            Reporter:
            Chun Zhang
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              Updated:
              Resolved:

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