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  1. Hadoop HDFS
  2. HDFS-4156

Seeking to a negative position should throw an IOE

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.0.0, 2.0.0-alpha
    • Fix Version/s: 2.0.3-alpha
    • Component/s: None
    • Labels:
    • Hadoop Flags:
      Reviewed

      Description

      Credit to Marcelo Masiero Vanzin for finding this. If you seek() to a position before the start of the file, the seek() call succeeds, and the following read() call throws an NPE. A more friendly approach would be to fail the seek() call.

      Exception in thread "main" java.lang.NullPointerException
      at org.apache.hadoop.hdfs.DFSInputStream.readWithStrategy(DFSInputStream.java:670)
      at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:685)
      at java.io.DataInputStream.read(DataInputStream.java:83)
      at fstest.main(fstest.java:12)
      

        Attachments

        1. HDFS-4156-1.patch
          0.8 kB
          Eli Reisman
        2. HDFS-4156-2.patch
          0.8 kB
          Eli Reisman
        3. HDFS-4156-3.patch
          3 kB
          Eli Reisman
        4. HDFS-4156-4.patch
          3 kB
          Eli Reisman

          Activity

            People

            • Assignee:
              initialcontext Eli Reisman
              Reporter:
              eli Eli Collins
            • Votes:
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              Dates

              • Created:
                Updated:
                Resolved: