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  1. Hadoop Map/Reduce
  2. MAPREDUCE-6760

LocatedFileStatusFetcher to use listFiles(recursive)

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Details

    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 2.8.0
    • None
    • mrv2
    • None

    Description

      LocatedFileStatusFetcher does parallelized path listing, but it does make recursive calls on every subdir.

      If we could switch it to use FileSystem.listFiles(recursive), object stores that have high-performance implementations of that operation would see significant speedup.

      HADOOP-13208 implements that for S3A; Azure, swift &c can do the same.

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          is depended upon by

          Sub-task - The sub-task of the issue HADOOP-13525 Optimize uses of FS operations in the ASF analysis frameworks and libraries

          • Major - Major loss of function.
          • Resolved
          relates to

          Sub-task - The sub-task of the issue HIVE-14165 Remove Hive file listing during split computation

          • Major - Major loss of function.
          • Closed

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              Unassigned Unassigned
              stevel@apache.org Steve Loughran
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              Dates

                Created:
                Updated: