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Posted to issues@spark.apache.org by "Gera Shegalov (Jira)" <ji...@apache.org> on 2021/05/15 05:51:00 UTC

[jira] [Created] (SPARK-35408) Improve parameter validation in DataFrame.show

Gera Shegalov created SPARK-35408:
-------------------------------------

             Summary: Improve parameter validation in DataFrame.show
                 Key: SPARK-35408
                 URL: https://issues.apache.org/jira/browse/SPARK-35408
             Project: Spark
          Issue Type: Improvement
          Components: PySpark
    Affects Versions: 3.1.1
            Reporter: Gera Shegalov


Being more used to Scala API the user may  be tempted to call  
{code:python}
df.show(False)
{code}
in PySparkl and she will receive an error message that does not easily map to the user code 
{noformat}
py4j.Py4JException: Method showString([class java.lang.Boolean, class java.lang.Integer, class java.lang.Boolean]) does not exist
	at py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:318)
	at py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:326)
	at py4j.Gateway.invoke(Gateway.java:274)
	at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
	at py4j.commands.CallCommand.execute(CallCommand.java:79)
	at py4j.GatewayConnection.run(GatewayConnection.java:238)
	at java.lang.Thread.run(Thread.java:748
{noformat}



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