You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@phoenix.apache.org by "James Taylor (JIRA)" <ji...@apache.org> on 2014/11/10 09:13:33 UTC

[jira] [Commented] (PHOENIX-539) Implement parallel scanner that does not spool to disk

    [ https://issues.apache.org/jira/browse/PHOENIX-539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14204498#comment-14204498 ] 

James Taylor commented on PHOENIX-539:
--------------------------------------

I've filed PHOENIX-1428 and PHOENIX-1429, as there are certain queries now that will spin up too many threads.

> 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.



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