Lokesh Jain created HDFS-15392:
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Summary: DistrbutedFileSystem#concat api can create large number
of small blocks
Key: HDFS-15392
URL: https://issues.apache.org/jira/browse/HDFS-15392
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Lokesh Jain
DistrbutedFileSystem#concat moves blocks from source to target. If the api is
repeatedly used on small files it can create large number of small blocks in
the target file. The Jira aims to optimize the api to avoid the issue of small
blocks.
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