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  1. Hadoop Map/Reduce
  2. MAPREDUCE-6800

FileInputFormat.singleThreadedListStatus to use listFiles(recursive)

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Details

    • Improvement
    • Status: Open
    • Minor
    • Resolution: Unresolved
    • 2.7.3
    • None
    • mrv2
    • None

    Description

      FileInputFormat.singleThreadedListStatus does recursive directory walks to pick files to scan. This is very inefficient on object stores, and can be bypassed if listFiles(recursive=true) can be used instead.

      Based on the experience of SPARK-2984, it should also be resilient to a source file going away during the iteration, downgrading an FNFE to a "skip that nonexistent path"

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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

          Bug - A problem which impairs or prevents the functions of the product. HIVE-21546 hiveserver2 - “mapred.FileInputFormat: Total input files to process” - why single threaded?

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. SPARK-2984 FileNotFoundException on _temporary directory

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

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              Unassigned Unassigned
              stevel@apache.org Steve Loughran
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              Dates

                Created:
                Updated: