[jira] [Commented] (PHOENIX-3005) Use DistinctPrefixFilter for COUNT(DISTINCT...) index scans

[Lars Hofhansl (JIRA)]

    [ 
https://issues.apache.org/jira/browse/PHOENIX-3005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15338830#comment-15338830
 ] 

Lars Hofhansl commented on PHOENIX-3005:
----------------------------------------

This is after I make this change in GroupBy.compile:
{code}
            if (isOrderPreserving || isUngroupedAggregate) {
                return new 
GroupBy.GroupByBuilder(this).setOrderPreservingColumnCount(orderPreservingColumnCount).build();
            }
{code}


> Use DistinctPrefixFilter for COUNT(DISTINCT...) index scans
> -----------------------------------------------------------
>
>                 Key: PHOENIX-3005
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-3005
>             Project: Phoenix
>          Issue Type: Sub-task
>            Reporter: Lars Hofhansl
>             Fix For: 4.8.0
>
>
> Currently the optimization in PHOENIX-258 is not used for DISTINCT index 
> scans. We should add that as well.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)