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From "Sailesh Patel (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-12981) HDFS renameSnapshot to Itself for Non Existent snapshot should throw error
Date Wed, 03 Jan 2018 01:08:02 GMT
Sailesh Patel created HDFS-12981:
------------------------------------

             Summary: HDFS  renameSnapshot to Itself for Non Existent snapshot should throw
error
                 Key: HDFS-12981
                 URL: https://issues.apache.org/jira/browse/HDFS-12981
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: hdfs
    Affects Versions: 2.6.0
            Reporter: Sailesh Patel
            Priority: Minor


When trying to rename a non-existent HDFS  snapshot to ITSELF, there are no errors and exits
with a success code.

The steps to reproduce this issue is:

hdfs dfs -mkdir /tmp/dir1
hdfs dfsadmin -allowSnapshot /tmp/dir1
hdfs dfs 	-createSnapshot /tmp/dir1  snap1_dir

Rename from non-existent to another_non-existent : errors and return code 1.  This is correct.

  hdfs dfs -renameSnapshot /tmp/dir1 nonexist another_nonexist  : 
  echo $?
   
  renameSnapshot: The snapshot nonexist does not exist for directory /tmp/dir1

Rename from non-existent to non-existent : no errors and return code 0  instead of Error and
return code 1.
  hdfs dfs -renameSnapshot /tmp/dir1 nonexist nonexist  ;  echo $?

Current behavior:   No error and return code 0.

Expected behavior:  An error returned and return code 1.




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