Hadoop Common
  1. Hadoop Common
  2. HADOOP-6569

FsShell#cat should avoid calling unecessary getFileStatus before opening a file to read

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.21.0
    • Component/s: fs
    • Labels:
      None
    • Hadoop Flags:
      Incompatible change, Reviewed

      Description

      Since FileSystem#open throws a FileNotFoundException when the file to be read does not exist, there is no need to check if the file is a directory or not before open. In case of HDFS, this could reduce one getFileInfo RPC to NameNode.

      1. optimizeCat.patch
        0.6 kB
        Hairong Kuang
      2. optimizeCat-yahoo2.patch
        3 kB
        Hairong Kuang
      3. optimizeCat-yahoo1.patch
        2 kB
        Hairong Kuang
      4. optimizeCat-yahoo.patch
        0.7 kB
        Hairong Kuang
      5. optimizeCat.patch
        0.6 kB
        Hairong Kuang

        Issue Links

          Activity

          No work has yet been logged on this issue.

            People

            • Assignee:
              Hairong Kuang
              Reporter:
              Hairong Kuang
            • Votes:
              0 Vote for this issue
              Watchers:
              2 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Development