Konstantin Orlov created IGNITE-28483:
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Summary: Sql. Simplify close method in DistributedQueryManager
Key: IGNITE-28483
URL: https://issues.apache.org/jira/browse/IGNITE-28483
Project: Ignite
Issue Type: Improvement
Components: sql ai3
Reporter: Konstantin Orlov
Assignee: Konstantin Orlov
Currently, this method first build execution chain, and then starts execution
in a separate thread pool. But synchronous part is in fact really small: it
basically schedules the closing task for every local fragment.
The problem is that this method is on hot path, and introduces one unnecessary
thread switch, which in turn may affect latency in certain scenarios.
Second problem with this method is that it sends `queryCloseMessage`
unconditionally back to coordinator node. Need to take closer look and probably
get rid of this.
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