[HDFS-6925] DataNode should attempt to place replicas on transient storage first if lazyPersist flag is received

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: HDFS-6581
• Fix Version/s: 2.6.0
• Component/s: datanode

Environment

If the LazyPersist flag is received via DataTransferProtocol then DN should attempt to place the files on RAM disk first, and failing that on regular disk.

Support for lazily moving replicas from RAM disk to persistent storage will be added later.

• Hadoop Flags: Reviewed
• Assignee: Arpit Agarwal
• Reporter: Arpit Agarwal
• Created: 23/Aug/14 18:42
• Updated: 01/Dec/14 03:09
• Resolved: 27/Aug/14 22:52