[HDFS-6060] NameNode should not check DataNode layout version

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.4.0
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Brandon Li
• Reporter: Brandon Li
• Created: 06/Mar/14 00:02
• Updated: 10/Apr/14 13:11
• Resolved: 06/Mar/14 19:29

Description

In current code, NameNode allows DataNode layout version to be different only when the NameNode is in rolling upgrade mode. DataNode can't register with NameNode when only DataNode is to be upgraded with a layout version different with that on NameNode.

NameNode should not check DataNode layout version in any cases.