[HADOOP-8168] empty-string owners or groups causes {{MissingFormatWidthException}} in o.a.h.fs.shell.Ls.ProcessPath()

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.23.1, 0.24.0
• Fix Version/s: 2.0.2-alpha
• Component/s: fs
• Hadoop Flags: Reviewed
• Assignee: Eugene Koontz
• Reporter: Eugene Koontz
• Created: 13/Mar/12 18:38
• Updated: 11/Oct/12 17:45
• Resolved: 28/Jun/12 17:44

Description

In adjustColumnWidths(), we set the member variable lineFormat, which is used by ProcessPath() to print directory entries. Owners and groups are formatted using the formatting conversion %-Xs, where X is the max length of the owner or group. However, when trying this with an S3 URL, I found that the owner and group were empty (""). This caused X to be 0, which means that the formatting conversion is set to %-0s. This caused a MissingFormatWidthException to be thrown when the formatting string was used in ProcessPath().

Formatting conversions are described here:

http://docs.oracle.com/javase/1.6.0/docs/api/java/util/Formatter.html#intFlags

The specific exception thrown (a subtype of IllegalFormatException) is described here:

http://docs.oracle.com/javase/1.6.0/docs/api/java/util/MissingFormatWidthException.html

Issue Links

• is duplicated by: HADOOP-8496 FsShell is broken with s3 filesystems
• relates to: HADOOP-4335 FsShell -ls fails for file systems without owners or groups