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  1. Hadoop Map/Reduce
  2. MAPREDUCE-6760

LocatedFileStatusFetcher to use listFiles(recursive)

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 2.8.0
    • Fix Version/s: None
    • Component/s: mrv2
    • Labels:
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    • Target Version/s:

      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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              • Assignee:
                Unassigned
                Reporter:
                stevel@apache.org Steve Loughran
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                Dates

                • Created:
                  Updated: