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  1. Hadoop HDFS
  2. HDFS-4300

TransferFsImage.downloadEditsToStorage should use a tmp file for destination

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Details

    • Bug
    • Status: Closed
    • Critical
    • Resolution: Fixed
    • 2.0.2-alpha
    • 2.1.0-beta
    • None
    • None

    Description

      Currently, in TransferFsImage.downloadEditsToStorage, we download the edits file directly to its finalized path. So, if the transfer fails in the middle, a half-written file is left and cannot be distinguished from a correct file. So, future checkpoints by the 2NN will fail, since the file is truncated in the middle – but it won't ever download a good copy because it thinks it already has the proper file.

      Attachments

        1. hdfs-4300-1.patch
          10 kB
          Andrew Wang
        2. hdfs-4300-2.patch
          17 kB
          Andrew Wang
        3. hdfs-4300-3.patch
          17 kB
          Andrew Wang
        4. hdfs-4300-4.patch
          17 kB
          Aaron Myers
        5. hdfs-4300-5.patch
          17 kB
          Andrew Wang

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. HDFS-3519 Checkpoint upload may interfere with a concurrent saveNamespace

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Activity

            People

              andrew.wang Andrew Wang
              tlipcon Todd Lipcon
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              Dates

                Created:
                Updated:
                Resolved: