Steve Loughran created MAPREDUCE-6760:
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Summary: LocatedFileStatusFetcher to use listFiles(recursive)
Key: MAPREDUCE-6760
URL: https://issues.apache.org/jira/browse/MAPREDUCE-6760
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: mrv2
Affects Versions: 2.8.0
Reporter: Steve Loughran
{{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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