[HDFS-12329] Ozone: Ratis: Readonly calls in XceiverClientRatis should use sendReadOnly

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: HDFS-7240
• Fix Version/s: HDFS-7240
• Component/s: ozone
• Labels: OzonePostMerge
• Target Version/s: HDFS-7240
• Hadoop Flags: Reviewed
• Assignee: Mukul Kumar Singh
• Reporter: Mukul Kumar Singh
• Created: 21/Aug/17 04:56
• Updated: 26/Apr/18 21:53
• Resolved: 20/Sep/17 02:12

Description

Currently both write and readonly calls in Ratis use RaftClient.send which enqueues the the request to the raft log and is processed later when the log entry is consumed.

Readonly call can be optimized by using RaftClient.sendReadOnly which will directly query the RaftServer for a particular request.

This jira will be used to discuss this issue.