[HDFS-7885] Datanode should not trust the generation stamp provided by client

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 2.7.0, 2.6.1, 3.0.0-alpha1
• Component/s: datanode
• Labels: 2.6.1-candidate
• Hadoop Flags: Reviewed
• Assignee: Tsz-wo Sze
• Reporter: vitthal (Suhas) Gogate
• Created: 04/Mar/15 20:29
• Updated: 30/Aug/16 01:38
• Resolved: 06/Mar/15 18:59

Description

Datanode should not trust the generation stamp provided by client, since it is prefetched and buffered in client, and concurrent append may increase it.

Issue Links

• is related to: HDFS-7884 NullPointerException in BlockSender