[jira] [Resolved] (SPARK-7961) Redesign SQLConf for better error message reporting

["Reynold Xin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-7961?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reynold Xin resolved SPARK-7961.
--------------------------------
       Resolution: Fixed
    Fix Version/s: 1.5.0
         Assignee: Shixiong Zhu

> Redesign SQLConf for better error message reporting
> ---------------------------------------------------
>
>                 Key: SPARK-7961
>                 URL: https://issues.apache.org/jira/browse/SPARK-7961
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Reynold Xin
>            Assignee: Shixiong Zhu
>            Priority: Critical
>             Fix For: 1.5.0
>
>
> Right now, we don't validate config values and as a result will throw exceptions when queries or DataFrame operations are run.
> Imagine if one user sets config variable "spark.sql.retainGroupColumns" (requires "true", "false") to "hello". The set action itself will complete fine. When another user runs a query, it will throw the following exception:
> {code}
> java.lang.IllegalArgumentException: For input string: "hello"
>     at scala.collection.immutable.StringLike$class.parseBoolean(StringLike.scala:238)
>     at scala.collection.immutable.StringLike$class.toBoolean(StringLike.scala:226)
>     at scala.collection.immutable.StringOps.toBoolean(StringOps.scala:31)
>     at org.apache.spark.sql.SQLConf.dataFrameRetainGroupColumns(SQLConf.scala:265)
>     at org.apache.spark.sql.GroupedData.toDF(GroupedData.scala:74)
>     at org.apache.spark.sql.GroupedData.agg(GroupedData.scala:227)
> {code}
> This is highly confusing. We should redesign SQLConf to validate data input at set time (during setConf call).



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