webhdfs setreplication api should return a 400 when called on a directory
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Key: HDFS-2432
URL: https://issues.apache.org/jira/browse/HDFS-2432
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Arpit Gupta
Currently the set replication api on a directory leads to a 200.
Request URI
http://NN:50070/webhdfs/tmp/webhdfs_data/dir_replication_tests?op=SETREPLICATION&replication=5
Request Method: PUT
Status Line: HTTP/1.1 200 OK
Response Content: {"boolean":false}
Since we can determine that this call did not succeed (boolean=false) we should
rather just return a 400 (Bad Request)
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