Aravindan Vijayan created HDDS-5277:
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Summary: Recon shows operational status as "DECOMMISSIONING" for
"DECOMMISSIONED" DNs
Key: HDDS-5277
URL: https://issues.apache.org/jira/browse/HDDS-5277
Project: Apache Ozone
Issue Type: Bug
Components: Ozone Recon
Affects Versions: 1.1.0
Reporter: Aravindan Vijayan
Assignee: Aravindan Vijayan
Fix For: 1.2.0
Decommissioned nodes have "DECOMMISSIONING" operational status in recon.
RCA
Recon relies on DN heartbeats to understand Node operational state. If the node
goes down before it reports itself as DECOMMISSIONED, then there is a loss of
information on Recon side. It is the SCM that moves a node form DECOMMISSIONING
to DECOMMISSIONED state first, then the Datanode persists the state change
locally, and then heartbeats with the new state to SCM & Recon subsequently.
If the DN is shutdown before it can heartbeat the state change to Recon, then
Recon lives with the stale information.
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