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From "Sergey Kalashnikov (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (IGNITE-4523) Allow distributed SQL query execution over explicit set of partitions
Date Fri, 10 Feb 2017 13:32:41 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-4523?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sergey Kalashnikov reassigned IGNITE-4523:
------------------------------------------

    Assignee: Sergey Kalashnikov  (was: Alexei Scherbakov)

> 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: Sergey Kalashnikov
>             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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