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https://issues.apache.org/jira/browse/IGNITE-16595?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrey N. Gura updated IGNITE-16595:
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Epic Link: (was: IGNITE-16603)
> Change planning approach to optimistic (in sense of data colocation)
> --------------------------------------------------------------------
>
> Key: IGNITE-16595
> URL: https://issues.apache.org/jira/browse/IGNITE-16595
> Project: Ignite
> Issue Type: Improvement
> Reporter: Yury Gerzhedovich
> Priority: Major
> Labels: ignite-3
> Attachments:
> bugreport-blackjack-QODS30.163-7-27-2022-03-13-13-48-43-dumpstate_log-17151.txt
>
>
> Because of the nature of the Raft, we can't guarantee the leaders won't be
> changed in between the mapping of the query to particular nodes and its
> actual execution. So the pessimistic approach was chosen where table has no
> determined distribution.
> However, the change of leader is actually a deterministic process, not a
> random one. With that said, let's switch to the optimistic approach and start
> to respect the actual distribution of the tables. Also it would be great to
> log every false-positive colocation
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