[jira] [Created] (SPARK-11244) sparkR.stop doesn't clean up .sparkRSQLsc in environment

["Sen Fang (JIRA)" <ji...@apache.org>]

Sen Fang created SPARK-11244:
--------------------------------

             Summary: sparkR.stop doesn't clean up .sparkRSQLsc in environment
                 Key: SPARK-11244
                 URL: https://issues.apache.org/jira/browse/SPARK-11244
             Project: Spark
          Issue Type: Bug
          Components: SparkR
    Affects Versions: 1.5.1
            Reporter: Sen Fang


Currently {{sparkR.stop}} removes relevant variables from {{.sparkREnv}} for SparkContext and backend. However it doesn't clean up {{.sparkRSQLsc}} and {{.sparkRHivesc}}.

It results 
{code}
sc <- sparkR.init("local")
sqlContext <- sparkRSQL.init(sc)
sparkR.stop()
sc <- sparkR.init("local")
sqlContext <- sparkRSQL.init(sc)
sqlContext
{code}
producing
{code}
 sqlContext
Error in callJMethod(x, "getClass") : 
  Invalid jobj 1. If SparkR was restarted, Spark operations need to be re-executed.
{code}



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