Vladislav Pyatkov created IGNITE-23519:
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Summary: Add an event for lease Assignments placement drive to
notify about checking assignments
Key: IGNITE-23519
URL: https://issues.apache.org/jira/browse/IGNITE-23519
Project: Ignite
Issue Type: Improvement
Reporter: Vladislav Pyatkov
h3. Motivation
We already have placement driver events for primary replicas:
PRIMARY_REPLICA_ELECTED, PRIMARY_REPLICA_EXPIRED. It seems to be symmetrical to
introduce the event about assignments changing.
Moreover, right now the functionality is needed for SQL team to invalidate a
node mapping.
h3. Definition of done
Create an event ASSIGNMENT_CHANGED with the following attributes:
* Old assignment (null if this is new assignment creation)
* New assignment (null if the assignment was removed)
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