zhengchenyu created MAPREDUCE-7287:
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Summary: Distcp will delete exists file , If we use "--delete and
--update" options and distcp file.
Key: MAPREDUCE-7287
URL: https://issues.apache.org/jira/browse/MAPREDUCE-7287
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: distcp
Affects Versions: 3.2.1
Reporter: zhengchenyu
Fix For: 3.3.1
hdfs://ns1/tmp/a is an existing file, hdfs://ns2/tmp/a is also an existing file.
When I run this command,
{code}
hadoop distcp -delete -update hdfs://ns1/tmp/a hdfs://ns2/tmp/a
{code}
I Found hdfs://ns2/tmp/a is deleted unpectectedly.
Then problem is DeletedDirTracker. Because here we only distcp a file (not a
directory), the varialbe `directories` in DeletedDirTracker is not set.
Maybe I think DeletedDirTracker only consider directory in design stage. But we
distcp only a file, they are deleted unpectectedly.
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