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  1. Hadoop Common
  2. HADOOP-16829 Über-jira: S3A Hadoop 3.3.1 features
  3. HADOOP-16468

S3AFileSystem.getContentSummary() to use listFiles(recursive)

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Duplicate
    • 3.2.0
    • hadoop-13704
    • fs, fs/s3
    • None

    Description

      HIVE-22054 discusses how they use getContentSummary to see if a directory is empty.

      This is implemented in FileSystem as a recursive treewalk, with all the costs there.

      Hive is moving off it; once that is in it won't be so much of an issue. But if we wanted to speed up older versions of Hive, we could move the operation to using a flat list

      That would give us the file size rapidly; the directory count would have to be worked out by tracking parent dirs of all paths (and all entries ending with /), and adding them up

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          duplicates

          Sub-task - The sub-task of the issue HADOOP-13704 S3A getContentSummary() to move to listFiles(recursive) to count children; instrument use

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          relates to

          Bug - A problem which impairs or prevents the functions of the product. HIVE-22054 Avoid recursive listing to check if a directory is empty

          • Major - Major loss of function.
          • Closed

          Activity

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              Unassigned Unassigned
              stevel@apache.org Steve Loughran
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              Dates

                Created:
                Updated:
                Resolved: