[Hadoop-common-dev] [jira] [Created] (HADOOP-7447) Add a warning message for FsShell -getmerge when the src path is no a directory

Add a warning message for FsShell -getmerge when the src path is no a directory
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Key: HADOOP-7447
URL: https://issues.apache.org/jira/browse/HADOOP-7447
Project: Hadoop Common
Issue Type: Improvement
Components: fs
Affects Versions: 0.20.3
Reporter: XieXianshan
Assignee: XieXianshan


While the <src> specified for FsShell -getmerge is not a directory,the command does nothing and there's no any message explaining the issue.
Furthermore,the exitCode is zero.

$ hdfs dfs -getmerge /user/hadoop/testfile /work/tmp/testfile
$ echo $?

$ ls /work/tmp/testfile
ls: cannot access /work/tmp/testfile: No such file or directory