Ivan Andika created HDDS-13890:
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Summary: Datanode supports dynamic configuration of SCM
Key: HDDS-13890
URL: https://issues.apache.org/jira/browse/HDDS-13890
Project: Apache Ozone
Issue Type: Task
Reporter: Ivan Andika
Assignee: Ivan Andika
Currently if we would like to migrate the SCM from (scm1, scm2, scm3) to (scm4,
scm5, scm6), all the datanodes need to be restarted 2 times with updated
ozone.scm.nodes.<service> # Before migration: Update ozone.scm.nodes to (scm1,
scm2, scm3, scm4, scm5, scm6)
# After (scm1, scm2, scm3) are decommissioned: Update ozone.scm.nodes to
(scm4, scm5, scm6)
As mentioned in HDDS-12391, rolling restarting all the datanodes might take a
while. For large datanodes fleet this might take a lot of time (days or event
weeks).
It might be good to support dynamic reconfiguration of SCM endpoints in DN to
prevent restarts.
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