PIG-1579: Intermittent unit test failure for TestScriptUDF.testPythonScriptUDFNullInputOutput (daijy)
PIG-1579: Intermittent unit test failure for TestScriptUDF.testPythonScriptUDFNullInputOutput (daijy)

git-svn-id: 8c49d51cc539c84b28b5042abd6e265f31af12f8@990721 13f79535-47bb-0310-9956-ffa450edef68

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