Siyao Meng created HDDS-17314:
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Summary: Make hdds.heartbeat.recon.interval control the Datanode
to Recon heartbeat interval
Key: HDDS-17314
URL: https://issues.apache.org/jira/browse/HDDS-17314
Project: Apache Ozone
Issue Type: Improvement
Components: Ozone Datanode, Ozone Recon
Reporter: Siyao Meng
Assignee: Siyao Meng
{{hdds.heartbeat.recon.interval}} (default 60s) does not control how often a
Datanode heartbeats Recon. {{RunningDatanodeState}} submits a heartbeat to
every endpoint, Recon included, on each SCM heartbeat cycle
({{hdds.heartbeat.interval}}). The Recon interval is read into {{StateContext}}
(HDDS-5862), but nothing has used it since HDDS-12639 dropped it from the task
wait, so Recon gets heartbeats as often as SCM does.
Proposed fix:
* Skip the Recon heartbeat in {{RunningDatanodeState}} until
{{hdds.heartbeat.recon.interval}} has passed since the last one. Version and
register calls to Recon are not delayed.
* Bound the interval: at least {{hdds.heartbeat.interval}}, and at most a third
of {{ozone.scm.stale.node.interval}}, so Recon does not mark Datanodes stale or
dead between heartbeats.
* Set a short Recon interval in the compose clusters that run Recon tests and
in {{MiniOzoneCluster}}, so those tests do not wait longer.
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