distcp does not skip copying file if we are updating single file
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Key: HADOOP-6051
URL: https://issues.apache.org/jira/browse/HADOOP-6051
Project: Hadoop Core
Issue Type: Bug
Components: tools/distcp
Affects Versions: 0.21.0
Reporter: Ravi Gummadi
Fix For: 0.21.0
distcp doesn't skip copying file when we do -update on single file if the
destfile already exists.
When we do
hadoop distcp -update srcfilename destfilename
it seems to be comparing checksums of srcfilename and destfilename/srcfilename
and so skip is not done. It should compare checksums of srcfilename and
destfilename.
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