[HDFS-2065] Fix NPE in DFSClient.getFileChecksum

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.23.0
• Fix Version/s: 0.23.0, 1.0.0
• Hadoop Flags: Reviewed
• Assignee: Uma Maheswara Rao G
• Reporter: Bharath Mundlapudi
• Created: 11/Jun/11 00:16
• Updated: 16/Mar/15 18:03
• Resolved: 01/Nov/11 00:42

Description

The following code can throw NPE if callGetBlockLocations returns null.

If server returns null

    List<LocatedBlock> locatedblocks
        = callGetBlockLocations(namenode, src, 0, Long.MAX_VALUE).getLocatedBlocks();

The right fix for this is server should throw right exception.

Issue Links

• is duplicated by: HDFS-2509 FileSystem#getFileChecksum will throw NullPointerException on non existing directories/files.