Konstantin Orlov created IGNITE-21018:
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Summary: Sql. Introduce cache for plan mapping
Key: IGNITE-21018
URL: https://issues.apache.org/jira/browse/IGNITE-21018
Project: Ignite
Issue Type: Improvement
Components: sql
Reporter: Konstantin Orlov
Mapping query on cluster topology is fairly expensive operation, because it
requires acquiring replicas per every partition a traversing a plan tree in
order to compute colocation of a query fragment.
This problem can be mitigated by introducing a cache for mapped queries.
Implementation notes: do not forget to invalidate cache when partition lease
got expired or logical topology has been changed.
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