[HDFS-5257] addBlock() retry should return LocatedBlock with locations else client will get AIOBE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.1-beta
• Fix Version/s: 2.3.0
• Component/s: hdfs-client, namenode
• Target Version/s: 2.3.0
• Hadoop Flags: Reviewed
• Assignee: Vinayakumar B
• Reporter: Vinayakumar B
• Created: 25/Sep/13 15:11
• Updated: 24/Feb/14 20:57
• Resolved: 25/Oct/13 18:48

Description

addBlock() call retry should return the LocatedBlock with locations if the block was created in previous call and failover/restart of namenode happened.

otherwise client will get ArrayIndexOutOfBoundsException while creating the block and write will fail.

java.lang.ArrayIndexOutOfBoundsException: 0
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.createBlockOutputStream(DFSOutputStream.java:1118)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1078)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:511)