[jira] [Created] (ZEPPELIN-1424) ZeppelinContext.show() fails to display Datasets of custom classes

["Sami Jaktholm (JIRA)" <ji...@apache.org>]

Sami Jaktholm created ZEPPELIN-1424:
---------------------------------------

             Summary: ZeppelinContext.show() fails to display Datasets of custom classes
                 Key: ZEPPELIN-1424
                 URL: https://issues.apache.org/jira/browse/ZEPPELIN-1424
             Project: Zeppelin
          Issue Type: Bug
    Affects Versions: 0.7.0
         Environment: Spark 2.0.0
            Reporter: Sami Jaktholm


Run the following code in Zeppelin Spark interpreter:
{code:java}
case class Test(key: String, value: String)
val data = spark.createDataset(Seq(
  Test("k1", "v1"),
  Test("k2", "v2")
))
z.show(data)
{code}

...and you get the following exception:
{noformat}
org.apache.zeppelin.interpreter.InterpreterException: java.lang.NoSuchMethodException: Test.isNullAt(int)
  at org.apache.zeppelin.spark.ZeppelinContext.showDF(ZeppelinContext.java:271)
  at org.apache.zeppelin.spark.ZeppelinContext.show(ZeppelinContext.java:191)
  at org.apache.zeppelin.spark.ZeppelinContext.show(ZeppelinContext.java:153)
  ... 46 elided
Caused by: java.lang.NoSuchMethodException: Test.isNullAt(int)
  at java.lang.Class.getMethod(Class.java:1786)
  at org.apache.zeppelin.spark.ZeppelinContext.showDF(ZeppelinContext.java:254)
  ... 48 more
{noformat}



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