[HDFS-4343] When storageID of dfs.data.dir of being inconsistent, restart datanode will be failure.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Component/s: datanode

Environment

namenode datanode

• Assignee: Unassigned
• Reporter: liuyang
• Created: 28/Dec/12 04:04
• Updated: 02/Feb/13 22:47
• Resolved: 02/Feb/13 22:47

Description

A datanode has multiple storage directories configured using dfs.data.dir. When the storageID in the VERSION files in these directories, the datanode fails to startup. Consider a scenario, when old data in a storage directory is not cleared, the storage ID from it will not match with storage ID of in other storage storage directories. In this situation, the DataNode will quit and restart fails.