Github user gss2002 commented on the issue: https://github.com/apache/zeppelin/pull/1447 @spektom just tested against my build by catching the exception and rethrowing.. It definitely solves the issue. } catch (LivyNoSessionException e) { throw e; } catch (Exception e) { LOGGER.error("error in interpretInput", e); return new InterpreterResult(Code.ERROR, e.getMessage()); } } public InterpreterResult interpret(String stringLines, The code base I'm using is here with you patch and a few of @zjffdu patches and one of mine for NestedRuntimeException for 404's with KerberosTemplate: https://github.com/gss2002/zeppelin/blob/GSS_PROD_BUILD/livy/src/main/java/org/apache/zeppelin/livy/LivyHelper.java
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