[HDFS-12721] Ozone: Ratis: Moving Ratis pipeline creation to client

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: ozone
• Assignee: Unassigned
• Reporter: Nandakumar
• Created: 26/Oct/17 19:33
• Updated: 26/Oct/17 19:33

Description

Currently after the allocation of pipeline SCM also creates the pipeline using XceiverClientRatis. Creation of pipeline has to be moved to the client from SCM. This is because the communication between Datanode and SCM happens only through heartbeat (and container report), Datanode sends heartbeat to SCM and SCM sends commands to Datanode through heartbeat response.