[jira] [Assigned] (SPARK-12926) SQLContext to disallow users passing non-sql configs

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-12926?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-12926:
------------------------------------

    Assignee:     (was: Apache Spark)

> SQLContext to disallow users passing non-sql configs
> ----------------------------------------------------
>
>                 Key: SPARK-12926
>                 URL: https://issues.apache.org/jira/browse/SPARK-12926
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 1.6.0
>            Reporter: Tejas Patil
>            Priority: Trivial
>
> Users unknowingly try to set core Spark configs in sqlContext but later realise that it didn't work.
> {color:red}
> scala> sqlContext.sql("SET spark.shuffle.memoryFraction=0.4")
> res3: org.apache.spark.sql.DataFrame = [key: string, value: string]
> scala> sqlContext.getConf.get("spark.shuffle.memoryFraction")
> java.util.NoSuchElementException: spark.shuffle.memoryFraction
> 	at org.apache.spark.SparkConf$$anonfun$get$1.apply(SparkConf.scala:193)
> 	at org.apache.spark.SparkConf$$anonfun$get$1.apply(SparkConf.scala:193)
> 	at scala.Option.getOrElse(Option.scala:120)
> 	at org.apache.spark.SparkConf.get(SparkConf.scala:193)
> {color}
> We could do this:
> - for configs starting with "spark.", allow only if it starts with "spark.sql.". Otherwise disallow.
> - allow anything else.
> This will be a simple change in SqlConf :
> https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/SQLConf.scala#L621



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