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https://issues.apache.org/jira/browse/IGNITE-2177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15059807#comment-15059807
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Denis Magda commented on IGNITE-2177:
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The ticket was created as a result of this discussion:
http://apache-ignite-users.70518.x6.nabble.com/Computation-on-NodeEntries-td2190.html
The discussion contains more details on what should be supported.
> User defined aggregate functions for SQL
> ----------------------------------------
>
> Key: IGNITE-2177
> URL: https://issues.apache.org/jira/browse/IGNITE-2177
> Project: Ignite
> Issue Type: Wish
> Reporter: Sergi Vladykin
> Fix For: 1.6
>
>
> Need to design some factory like abstraction for creating map part and reduce
> part of the aggregate.
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