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https://issues.apache.org/jira/browse/SPARK-30223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16997298#comment-16997298
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Wenchen Fan commented on SPARK-30223:
-------------------------------------
It's not possible to pass around the `SQLConf` object in all the places, you
can take a look at the callers of `SQLConf.get`.
BTW I mean adding `SparkSession.setActiveSession(this)` in `SparkSession.sql`
and other similar places.
> queries in thrift server may read wrong SQL configs
> ---------------------------------------------------
>
> Key: SPARK-30223
> URL: https://issues.apache.org/jira/browse/SPARK-30223
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Wenchen Fan
> Priority: Major
>
> The Spark thrift server creates many SparkSessions to serve requests, and the
> thrift server serves requests using a single thread. One thread can only have
> one active SparkSession, so SQLCong.get can't get the proper conf from the
> session that runs the query.
> Whenever we issue an action on a SparkSession, we should set this session as
> active session, e.g. `SparkSession.sql`.
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