Add mkdir -p flag
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Key: HADOOP-8175
URL: https://issues.apache.org/jira/browse/HADOOP-8175
Project: Hadoop Common
Issue Type: Sub-task
Components: fs
Affects Versions: 0.23.0, 0.24.0
Reporter: Daryn Sharp
Assignee: Daryn Sharp
Users require the ability to create a directory iff it doesn't exist.
Currently, running FsShell's mkdir twice will result in an already exists
error. The unix mkdir -p flag won't fail if the directory already exists. Per
parent jira, pig project would also like this feature.
(Eventually mkdir should probably also stop creating all intermediate dirs
unless -p is given, but that's an incompatible change)
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