[HADOOP-12533] Introduce FileNotFoundException in WASB for read and seek API

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: tools
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Dushyanth
• Reporter: Dushyanth
• Due: 02/Nov/15
• Created: 30/Oct/15 17:32
• Updated: 30/Aug/16 01:22
• Resolved: 02/Nov/15 18:19

Description

Currently WASB throws a IOException in read and seek API for both Block and Page blobs for scenarios where the backing blobs do not exists. This creates problems for applications like HBase which expect a FileNotFoundException in these scenarios.

The fix for the problem is to check if the exceptions from Azure storage is because for Blob not found and throw FileNotFound exception if that is the case.