[HDDS-8229] SCM stalenode handle mark pipeline as Readonly instead of closure

• Type: Sub-task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Sumit Agrawal
• Created: 21/Mar/23 07:32
• Updated: 21/Mar/23 07:32

Description

In big cluster, if one of DN do not respond within 5min, due to slow running or other cases,

• SCM will mark it as stale and closes pipeline and all containers
• If DN response is received, again SCM will create all pipeline and cotainers

This creates lot of event, extra burden over SCM and DN.

Other impact:

• Few created container remains empty or small container

 

To handle the ripple effect of closure of pipeline and containers and re-creation, 

• Can mark pipeline as readonly, i.e. it will not be used further for any new block allocation
• Containers/pipeline will remain open, till either DN becomes healthy, or DN is dead