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  1. Hadoop HDFS
  2. HDFS-8150

Make getFileChecksum fail for blocks under construction

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Details

    • Bug
    • Status: Resolved
    • Critical
    • Resolution: Fixed
    • None
    • 2.8.0, 3.0.0-alpha1
    • None
    • None
    • Reviewed

    Description

      We have seen the cases of validating data copy using checksum then the content of target changing. It turns out the target wasn't closed successfully, so it was still under-construction. One hour later, a lease recovery kicked in and truncated the block.

      Although this can be prevented in many ways, if there is no valid use case for getting file checksum from under-construction blocks, can it be disabled? E.g. Datanode can throw an exception if the replica is not in the finalized state.

      Attachments

        1. HDFS-8150.3.patch
          6 kB
          J.Andreina
        2. HDFS-8150.2.patch
          5 kB
          J.Andreina
        3. HDFS-8150.1.patch
          3 kB
          J.Andreina

        Activity

          People

            andreina J.Andreina
            kihwal Kihwal Lee
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            Dates

              Created:
              Updated:
              Resolved: