Matt Burgess created NIFI-8730:
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Summary: ECMAScript engine throws NPE when script is empty
Key: NIFI-8730
URL: https://issues.apache.org/jira/browse/NIFI-8730
Project: Apache NiFi
Issue Type: Bug
Components: Extensions
Reporter: Matt Burgess
As of NIFI-8625, script engines that aren't Invocable are filtered out from the
list of available engines to choose for most scripting components (except for
ExecuteScript and ScriptedTransformRecord at the time of this writing) as all
other scripting components require an Invocable script engine. However this
causes ECMAScript to be the default engine, and it throws a
NullPointerException when the script body is empty (which it is when the
processor is first created).
Rather than make a different engine be the default (which could be done under a
different Jira), it is better to not try to create the ScriptRunner and/or
evaluate the script if the body is empty.
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