Varun Thacker created SOLR-8554:
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Summary: RebalanceLeader and ForceLeader APIs should be part of
OverseerCollectionMessageHandler
Key: SOLR-8554
URL: https://issues.apache.org/jira/browse/SOLR-8554
Project: Solr
Issue Type: Bug
Reporter: Varun Thacker
I think RebalanceLeader and ForceLeader API calls should be part of the
OverseerCollectionMessageHandler.
There are two reasons for this -
1. If the API is implemented within the OverseerCollectionMessageHandler the
Overseer provides us with concurrency guarantees i.e two calls against a
collection can't be executed simultaneously .
An example, a delete shard was fired and simultaneously a force leader was
fired. Now say the replica which was meant to be deleted became the new leader.
2. Less important that 1 , but if the API is implemented within the
OverseerCollectionMessageHandler , we can provide an async option in these APIs
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