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From "Alexei Scherbakov (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (IGNITE-4523) Allow distributed SQL query execution over explicit set of partitions
Date Wed, 18 Jan 2017 21:13:26 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-4523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15828777#comment-15828777
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Alexei Scherbakov edited comment on IGNITE-4523 at 1/18/17 9:13 PM:
--------------------------------------------------------------------

I've found out what current implementation doens't work with distributed joins.

But I think this feature should be compatible with it.

Could anyone take a look at current PR state while I'm looking deeper into dsitributed joins
code?

TC looks OK: http://ci.ignite.apache.org/viewQueued.html?itemId=424438


was (Author: ascherbakov):
I've found out what current implementation doens't work with distributed queries.

But I think this feature should be compatible with it.

Could anyone take a look at current PR state while I'm looking deeper into dsitributed queries
code?

TC looks OK: http://ci.ignite.apache.org/viewQueued.html?itemId=424438

> 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
>
>
> 3Currently 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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