[HDDS-737] Introduce Incremental Container Report

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.4.0
• Component/s: Ozone Datanode, SCM
• Target Version/s: 0.4.0
• Assignee: Nandakumar
• Reporter: Nandakumar
• Created: 25/Oct/18 14:14
• Updated: 08/Nov/18 13:19
• Resolved: 08/Nov/18 13:08

Description

We will use Incremental Container Report (ICR) to immediately inform SCM when there is some state change to the container in datanode. This will make sure that SCM is updated as soon as the state of a container changes and doesn’t have to wait for full container report.

When do we send ICR?

• When a container replica state changes from open/closing to closed
• When a container replica state changes from open/closing to quasi closed
• When a container replica state changes from quasi closed to closed
• When a container replica is deleted in datanode
• When a container replica is copied from another datanode
• When a container replica is discovered to be corrupted

Issue Links

• is required by: HDDS-801 Quasi close the container when close is not executed via Ratis