[HDFS-6034] DN registration should use DataNodeLayoutVersion instead of NameNodeLayoutVersion

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: HDFS-5535 (Rolling upgrades)
• Fix Version/s: HDFS-5535 (Rolling upgrades)
• Component/s: datanode, ha, hdfs-client, namenode
• Target Version/s: HDFS-5535 (Rolling upgrades)
• Hadoop Flags: Reviewed
• Assignee: Tsz-wo Sze
• Reporter: Haohui Mai
• Created: 28/Feb/14 03:14
• Updated: 01/Mar/14 01:15
• Resolved: 01/Mar/14 01:15

Description

Currently the registrationID is in the form of BlockPoolID-NNLayoutVersion. When the NN bumps the layout version during rolling upgrade, the DNs will fail to register with the new NN and exit, regardless whether the new software version is used.