[HADOOP-7818] DiskChecker#checkDir should fail if the directory is not executable

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0-alpha
• Fix Version/s: 2.0.2-alpha
• Component/s: util
• Hadoop Flags: Reviewed
• Assignee: madhukara phatak
• Reporter: Eli Collins
• Created: 11/Nov/11 22:34
• Updated: 11/Oct/12 17:45
• Resolved: 15/Jul/12 15:35

Description

DiskChecker#checkDir fails if a directory can't be created, read, or written but does not fail if the directory exists and is not executable. This causes subsequent code to think the directory is OK but later fail due to an inability to access the directory (eg see MAPREDUCE-2921). I propose checkDir fails if the directory is not executable. Looking at the uses, this should be fine, I think it was ignored because checkDir is often used to create directories and it creates executable directories.

Issue Links

• duplicates: MAPREDUCE-2921 TaskTracker won't start with failed local directory