Sailesh Patel created HDFS-12981:
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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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