[jira] [Commented] (STORM-1443) Support customizing parallelism in StormSQL

["Haohui Mai (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/STORM-1443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15086189#comment-15086189 ] 

Haohui Mai commented on STORM-1443:
-----------------------------------

One possible approach is to allow users to set the parallelism through the `SET` statements in StormSQL. For example:

{code}
SET @select.stage0.parallelism=4;
SELECT * FROM ...;
{code}

User can get the name of the stage through a `EXPLAIN` statement.

> Support customizing parallelism in StormSQL
> -------------------------------------------
>
>                 Key: STORM-1443
>                 URL: https://issues.apache.org/jira/browse/STORM-1443
>             Project: Apache Storm
>          Issue Type: New Feature
>            Reporter: Haohui Mai
>
> Currently all processors in StormSQL have a default parallelism of 1. It is desirable to have the ability to set parallelism for each processor.



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