[jira] [Commented] (SPARK-16795) Spark's HiveThriftServer should be able to use multiple sqlContexts

["Sean Owen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-16795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15399254#comment-15399254 ] 

Sean Owen commented on SPARK-16795:
-----------------------------------

I'm not super familiar with the thrift server, but generally one process has one context, which can handle multiple parallel requests. I am not sure the number of contexts matters.

> Spark's HiveThriftServer should be able to use multiple sqlContexts
> -------------------------------------------------------------------
>
>                 Key: SPARK-16795
>                 URL: https://issues.apache.org/jira/browse/SPARK-16795
>             Project: Spark
>          Issue Type: Wish
>    Affects Versions: 2.0.0
>            Reporter: Furcy Pin
>
> It seems that when sending multiple Hive queries to the thrift server, the server cannot parallelize the query plannings, because
> it uses only one global sqlContext.
> This make the server very inefficient at handling many small concurrent queries.
> It would be nice to have it use a pool of sqlContexts instead, with a configurable maximum number of contexts.



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