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https://issues.apache.org/jira/browse/PHOENIX-1281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14147158#comment-14147158
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James Taylor commented on PHOENIX-1281:
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+1. Thanks, [~lhofhansl]. Please file a JIRA for this query: select
distinct(v1) from x where v1 <> 1
It shouldn't take longer than the others.
Also, please commit this to 3.0, 4.0, and master branch.
> Each MultiKeyValueTuple.setKeyValues creates a new immutable list object
> ------------------------------------------------------------------------
>
> Key: PHOENIX-1281
> URL: https://issues.apache.org/jira/browse/PHOENIX-1281
> Project: Phoenix
> Issue Type: Bug
> Reporter: Lars Hofhansl
> Attachments: 1281-v1.txt
>
>
> I looked through all callers of this method, and in each case we have a fresh
> List object anyway, and hence the wrapping is not necessary saving at least
> one new object per row scanned.
> This is probably not really critical, but of a sizable COUNT(\*) or other
> aggregate it still creates lot of unnecessary objects.
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