Pierre Villard created NIFI-7844:
------------------------------------
Summary: substring should return empty instead of throwing
IndexOutOfBoundsException
Key: NIFI-7844
URL: https://issues.apache.org/jira/browse/NIFI-7844
Project: Apache NiFi
Issue Type: Improvement
Components: Core Framework
Reporter: Pierre Villard
Assignee: Pierre Villard
In the expression language, right now, for the substring function:
{quote}If the _starting index_ or the _ending index_ is greater than the length
of the Subject or has a value less than 0, this function call will result in an
error.
{quote}
I suggest to change this behavior and return an empty string instead. Reason
being that with the current behavior, an UpdateAttribute would fail and roll
back the flow file in the incoming relationship, this could cause back pressure
and completely block the whole flow to be running.
It might be worth mentioning it in the migration guide as this changes the
current behavior but I still think this is a reasonable change.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
