Steve Loughran created SPARK-7508:
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             Summary: JettyUtils-generated servlets to log & report all errors
                 Key: SPARK-7508
                 URL: https://issues.apache.org/jira/browse/SPARK-7508
             Project: Spark
          Issue Type: Improvement
          Components: Web UI
    Affects Versions: 1.3.1
            Reporter: Steve Loughran
            Priority: Minor


the servlets created by JettyUtils to render pages do handle 
{{IllegalArgumentException}} exceptions, but all others are just thrown up. 
This stops them being logged or converted to meaningful error messages.

At the very least, server-side logging via log4j means that problems can be 
identified.



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