Alexei Scherbakov created IGNITE-4523:
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Summary: Allow distributed SQL query execution over explisit set
of partitions
Key: IGNITE-4523
URL: https://issues.apache.org/jira/browse/IGNITE-4523
Project: Ignite
Issue Type: Improvement
Components: cache, SQL
Affects Versions: 1.8
Reporter: Alexei Scherbakov
Assignee: Alexei Scherbakov
Fix For: 2.0
Currently distributed SQL query is executed on all nodes containing primary
partitions for a cache, sending map query requests on all nodes in grid.
Sometimes we know in advance which partitions hold a data for query, on
example, in case of custom affinity function.
Therefore it's possible to reduce number of nodes receiving map query request
by providing explicit set of partitions, which will give significant
performance advantage and traffic reduction in case of very large clusters.
Internally we already have such functionality, so the only necessary thing is
to provide public API for what.
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