[HDFS-4997] libhdfs doesn't return correct error codes in most cases

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.3.0
• Component/s: libhdfs
• Target Version/s: 2.3.0
• Hadoop Flags: Incompatible change, Reviewed
• Release Note: libhdfs now returns correct codes in errno. Previously, due to a bug, many functions set errno to 255 instead of the more specific error code.
• Assignee: Colin P. McCabe
• Reporter: Colin P. McCabe
• Created: 15/Jul/13 23:07
• Updated: 24/Feb/14 20:56
• Resolved: 03/Dec/13 23:14

Description

libhdfs has some code to translate Java exceptions into C error codes. Unfortunately, the exceptions are returned to us in "dotted" format, but the code is expecting them to be in "slash-separated" format. This results in most exceptions just leading to a generic error code.

We should fix this and add a unit test to ensure this continues to work.