phoenix-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-4616) Move join query optimization out from QueryCompiler into QueryOptimizer
Date Wed, 14 Mar 2018 22:05:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-4616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16399505#comment-16399505
] 

James Taylor commented on PHOENIX-4616:
---------------------------------------

Instead of this:
{code}
+        if (dataPlan instanceof BaseQueryPlan) {
+            return getApplicablePlans((BaseQueryPlan) dataPlan, statement, targetColumns,
parallelIteratorFactory, stopAtBestPlan);
+        }
{code}
can you do this?
{code}
if (dataPlan.getSourceRefs().size() == 1) {
    return getApplicablePlans(dataPlan, statement, targetColumns, parallelIteratorFactory,
stopAtBestPlan);
}
{code}

> Move join query optimization out from QueryCompiler into QueryOptimizer
> -----------------------------------------------------------------------
>
>                 Key: PHOENIX-4616
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4616
>             Project: Phoenix
>          Issue Type: Improvement
>            Reporter: Maryann Xue
>            Assignee: Maryann Xue
>            Priority: Major
>         Attachments: PHOENIX-4616.patch
>
>
> Currently we do optimization for join queries inside QueryCompiler, which makes the APIs
and code logic confusing, so we need to move join optimization logic into QueryOptimizer.
>  Similarly, but probably with a different approach, we need to optimize UNION ALL queries
and derived table sub-queries in QueryOptimizer.optimize().
> Please also refer to this comment:
> https://issues.apache.org/jira/browse/PHOENIX-4585?focusedCommentId=16367616&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16367616



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Mime
View raw message