[MAPREDUCE-7287] Distcp will delete existing file , If we use "-delete and -update" options and distcp file.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.1
• Fix Version/s: 3.3.2
• Component/s: distcp
• Labels: pull-request-available
• Target Version/s: 3.3.1
• Assignee: Chenyu Zheng
• Reporter: Chenyu Zheng
• Created: 29/Jul/20 10:12
• Updated: 02/Aug/21 17:06
• Resolved: 28/May/21 19:52

Description

hdfs://ns1/tmp/a is an existing file, hdfs://ns2/tmp/a is also an existing file.

When I run this command, 

hadoop distcp -delete -update hdfs://ns1/tmp/a hdfs://ns2/tmp/a

I Found hdfs://ns2/tmp/a is deleted unpectectedly.

Issue Links

• relates to: HADOOP-17122 Bug in preserving Directory Attributes in DistCp with Atomic Copy
• links to: GitHub Pull Request #2852