[jira] [Created] (IGNITE-4523) Allow distributed SQL query execution over explisit set of partitions

["Alexei Scherbakov (JIRA)" <ji...@apache.org>]

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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