[HDFS-5233] Use Datanode UUID to identify Datanodes

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Heterogeneous Storage (HDFS-2832)
• Fix Version/s: Heterogeneous Storage (HDFS-2832)
• Component/s: datanode, namenode
• Assignee: Arpit Agarwal
• Reporter: Arpit Agarwal
• Created: 19/Sep/13 21:29
• Updated: 22/Sep/13 21:36
• Resolved: 22/Sep/13 21:36

Description

StorageID currently identifies both a Datanode and a storage attached to the Datanode. Once we start tracking multiple storages per datanode we would like to deprecate StorageID in favor of a DatanodeUuid for the datanode and a StorageUuid per storage.

This Jira track replacing StorageID with DatanodeUuid wherever it is used to identify a Datanode.

Issue Links

• depends upon: HDFS-5232 Protocol changes to transmit StorageUuid
• is depended upon by: HDFS-4988 Datanode must support all the volumes as individual storages