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https://issues.apache.org/jira/browse/IGNITE-4523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15816147#comment-15816147
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Alexei Scherbakov commented on IGNITE-4523:
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Almost ready for TC.
Have to add a test with distributed join.
PR: https://github.com/apache/ignite/pull/1418
Please review API changes please while I'm finishing the test.
I'm followed [~vozerov]'s API proposal, just added support for efficient
partition range assignment.
This is handy in case we split partitions in ranges and assign independent data
set to each range, which is described in details in IGNITE-4378.
> Allow distributed SQL query execution over explicit 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: 1.9
>
>
> 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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