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https://issues.apache.org/jira/browse/IGNITE-12248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16981497#comment-16981497
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Andrey Mashenkov commented on IGNITE-12248:
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[~gvvinblade], I've left my 50 cent.
Please, see comments in the PR.
> Apache Calcite based query execution engine
> -------------------------------------------
>
> Key: IGNITE-12248
> URL: https://issues.apache.org/jira/browse/IGNITE-12248
> Project: Ignite
> Issue Type: Task
> Components: sql
> Reporter: Igor Seliverstov
> Assignee: Igor Seliverstov
> Priority: Major
> Time Spent: 2h
> Remaining Estimate: 0h
>
> Currently used H2 based query execution engine has a number of critical
> limitations Which do not allow to execute an arbitrary query.
> The ticket aims to show potential of a new, Calcite based, execution engine
> which may act not worse than current one on co-located queries, provide a
> boost for queries, using distributed joins, and provide an ability to execute
> arbitrary queries, requiring more than one map-reduce step in execution flow.
> [IEP
> link|https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=130028084]
> [Dev list
> thread|http://apache-ignite-developers.2346864.n4.nabble.com/New-SQL-execution-engine-td43724.html]
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