Zheng Shao created HADOOP-14086:
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Summary: Improve DistCp Speed for small files
Key: HADOOP-14086
URL: https://issues.apache.org/jira/browse/HADOOP-14086
Project: Hadoop Common
Issue Type: Improvement
Components: tools/distcp
Affects Versions: 2.6.5
Reporter: Zheng Shao
Assignee: Zheng Shao
Priority: Minor
When using distcp to copy lots of small files, NameNode naturally becomes a
bottleneck.
The current distcp code did *not* optimize to reduce the NameNode calls. We
should restructure the code to reduce the number of NameNode calls as much as
possible to speed up the copy of small files.
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