[GitHub] incubator-spark pull request: Added extra description on ValueErro...

[JoshRosen]

Github user JoshRosen commented on the pull request:

    https://github.com/apache/incubator-spark/pull/581#issuecomment-35117763
  
    I may have given some bad suggestions earlier with using 
`_extract_concise_traceback`; I think you may just want to use the regular 
traceback module and just use the attribute that drops the frame that calls the 
traceback (so you get the frame of the call into `SparkContext`__init__`).