[HDDS-6842] Reduce the number of watch requests in StreamCommitWatcher

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: HDDS-4454
• Component/s: SCM Client
• Labels: pull-request-available
• Assignee: Tsz-wo Sze
• Reporter: Tsz-wo Sze
• Created: 07/Jun/22 21:01
• Updated: 27/Jun/22 02:41
• Resolved: 10/Jun/22 06:40

Description

In Streaming, there could be multiple watch requests for the same index. StreamCommitWatcher should (1) cache the requests and (2) save the watched index in order to reduce the number of watch requests being sent.

Issue Links

• relates to: HDDS-6844 Reduce the number of watch requests in XceiverClientRatis
• relates to: RATIS-1590 Include the new log index in Watch reply
• links to: GitHub Pull Request #3492