[jira] [Created] (SPARK-17735) Cannot call sqlContext inside udf

["Saif Addin Ellafi (JIRA)" <ji...@apache.org>]

Saif Addin Ellafi created SPARK-17735:
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             Summary: Cannot call sqlContext inside udf
                 Key: SPARK-17735
                 URL: https://issues.apache.org/jira/browse/SPARK-17735
             Project: Spark
          Issue Type: Bug
          Components: Spark Core, SQL
    Affects Versions: 1.6.0
         Environment: Linux
            Reporter: Saif Addin Ellafi
            Priority: Minor


Hello, I know it is a strange use case but I just wanted to append is cache to hive tables and turned out into this

def inCacheUdf = org.apache.spark.sql.functions.udf {name: String => sqlContext.isCached(name)}

val ts = sqlContext.tables

ts.withColumn("foo", inCacheUdf(ts.col("tableName"))).show

.. will throw a Null Pointer Exception.

I am not sure, since in my program I was getting:

A master url must be set in your configuration

or NullPointer a getConf as well.

Thoughts?



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