[jira] [Created] (SPARK-9280) New HiveContext object unexpectedly loads configuration settings from history

["Tien-Dung LE (JIRA)" <ji...@apache.org>]

Tien-Dung LE created SPARK-9280:
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             Summary: New HiveContext object unexpectedly loads configuration settings from history 
                 Key: SPARK-9280
                 URL: https://issues.apache.org/jira/browse/SPARK-9280
             Project: Spark
          Issue Type: Bug
            Reporter: Tien-Dung LE


In a spark-shell session, stopping a spark context and create a new spark context and hive context does not clean the spark sql configuration. More precisely, the new hive context still keeps the previous configuration settings. Here is a code to show this scenario.

{code:title=New hive context should not load the configurations from history}
case class Foo ( x: Int = (math.random * 1e3).toInt)
val foo = (1 to 100).map(i => Foo()).toDF
foo.saveAsParquetFile( "foo" )
sqlContext.setConf( "spark.sql.shuffle.partitions", "10")

sc.stop

val sparkConf2 = new org.apache.spark.SparkConf()
val sc2 = new org.apache.spark.SparkContext( sparkConf2 ) 
val sqlContext2 = new org.apache.spark.sql.hive.HiveContext( sc2 )

sqlContext2.getConf( "spark.sql.shuffle.partitions", "20") 
val foo2 = sqlContext2.parquetFile( "foo" )
sqlContext2.getConf( "spark.sql.shuffle.partitions", "30")
// expected 30 but got 10
{code}



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