[HADOOP-8175] Add mkdir -p flag

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.23.0, 0.24.0
• Fix Version/s: 0.23.2
• Component/s: fs
• Hadoop Flags: Reviewed
• Release Note: FsShell mkdir now accepts a -p flag. Like unix, mkdir -p will not fail if the directory already exists. Unlike unix, intermediate directories are always created, regardless of the flag, to avoid incompatibilities at this time.
• Assignee: Daryn Sharp
• Reporter: Daryn Sharp
• Created: 15/Mar/12 19:19
• Updated: 02/Oct/12 19:31
• Resolved: 16/Mar/12 01:32

Description

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)

Issue Links

• is related to: HADOOP-8873 Port HADOOP-8175 (Add mkdir -p flag) to branch-1
• is required by: HDFS-3104 Add tests for mkdir -p