[jira] [Created] (SPARK-32991) RESET can clear StaticSQLConfs

["Herman van Hövell (Jira)" <ji...@apache.org>]

Herman van Hövell created SPARK-32991:
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             Summary: RESET can clear StaticSQLConfs
                 Key: SPARK-32991
                 URL: https://issues.apache.org/jira/browse/SPARK-32991
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.0.1
            Reporter: Herman van Hövell


The RESET command can clear a sessions' static SQL configurations, when that static SQL configuration was set on a SparkSession that uses a pre-existing SparkContext. Here is repro:
{code:java}
// Blow away any pre-existing session thread locals
org.apache.spark.sql.SparkSession.clearDefaultSession()
org.apache.spark.sql.SparkSession.clearActiveSession()

// Create new session and explicitly set a spark context
val newSession = org.apache.spark.sql.SparkSession.builder
 .sparkContext(sc)
 .config("spark.sql.globalTempDatabase", "bob")
 .getOrCreate()
assert(newSession.conf.get("spark.sql.globalTempDatabase") == "bob")
newSession.sql("reset")
assert(newSession.conf.get("spark.sql.globalTempDatabase") == "bob") // Boom!
{code}
The problem is that RESET assumes it can use the SparkContext's configurations as its default.

 

 



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