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  1. Hadoop Map/Reduce
  2. MAPREDUCE-563 Security features for Map/Reduce
  3. MAPREDUCE-871

Job/Task local files have incorrect group ownership set by LinuxTaskController binary

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Details

    • Sub-task
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.21.0
    • tasktracker
    • None
    • Reviewed
    • Fixed LinuxTaskController binary so that permissions of local files on TT are set correctly: user owned by the job-owner and group-owned by the group owner of the binary and _not_ the primary group of the TaskTracker.

    Description

      HADOOP-4491 fixed the secure permissions of local files on a TT. While testing HADOOP-4491 on a cluster, karams found out a bug. All the files/dirs have should be owned by the group corresponding to the group owner of the task-controller binary (via using getegid()) which in turn is a special group to which only TT user belongs. HADOOP-4491 incorrectly set it to primary group of the TT via getgid(), and not the special group.

      Attachments

        1. 871.20S.patch
          8 kB
          Ravi Gummadi
        2. MAPREDUCE-871-20090820.1.txt
          8 kB
          Vinod Kumar Vavilapalli

        Issue Links

          blocks

          Sub-task - The sub-task of the issue MAPREDUCE-856 Localized files from DistributedCache should have right access-control

          • Major - Major loss of function.
          • Closed

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            People

              vinodkv Vinod Kumar Vavilapalli
              vinodkv Vinod Kumar Vavilapalli
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              Dates

                Created:
                Updated:
                Resolved: