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https://issues.apache.org/jira/browse/PHOENIX-539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14057660#comment-14057660
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Maryann Xue commented on PHOENIX-539:
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[~gabriel.reid], think it might be better to put the "isHashJoin" check in
ScanPlan#buildResultIteratorFactory(), since this is still at the compilation
stage and such checks (like if order-by is empty) are preferably performed
there. What do you think?
> Implement parallel scanner that does not spool to disk
> ------------------------------------------------------
>
> Key: PHOENIX-539
> URL: https://issues.apache.org/jira/browse/PHOENIX-539
> Project: Phoenix
> Issue Type: Task
> Reporter: James Taylor
> Assignee: Gabriel Reid
> Fix For: 5.0.0, 3.1, 4.1
>
> Attachments: PHOENIX-539.1.patch, PHOENIX-539.patch
>
>
> In scenarios where a LIMIT is not present on a non aggregate query that will
> return a lot of results, Phoenix spools the results to disk. This is less
> than ideal in these situations. @larsh has created a very good and relatively
> simple implementation that is queue based to replace this.
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