[HDDS-2242] Avoid unnecessary rpc needed to discover the pipeline leader

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.5.0
• Fix Version/s: 0.4.2
• Component/s: Ozone Client
• Labels: pull-request-available
• Assignee: Siddharth Wagle
• Reporter: Siddharth Wagle
• Created: 03/Oct/19 20:42
• Updated: 08/Jan/20 22:13
• Resolved: 13/Dec/19 08:03

Description

HDDS-1868 adds the leaderID to pipeline protobuf. Client should use this to stream requests directly to the leader vs current implementation of randomly choosing one of the datanodes in the pipeline and relying on the follower to tell the client which node is the leader.

Issue Links

• is blocked by: HDDS-1868 Ozone pipelines should be marked as ready only after the leader election is complete
• links to: GitHub Pull Request #313