Deon Huang created NIFI-5744:
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             Summary: Put exception message to attribute while ExecuteSQL fail
                 Key: NIFI-5744
                 URL: https://issues.apache.org/jira/browse/NIFI-5744
             Project: Apache NiFi
          Issue Type: Bug
    Affects Versions: 1.7.1
            Reporter: Deon Huang


In some scenario, it would be great if we could have different behavior based 
on exception.
 Better error tracking afterwards in attribute format instead of tracking in 
log.

For example, if it’s connection refused exception due to wrong url. 
 We won’t want to retry and error message attribute would be helpful to keep 
track of.

While it’s other scenario that database temporary unavailable, we should retry 
it based on should retry exception.

Should be a quick fix at AbstractExecuteSQL before transfer flowfile to failure 
relationship
{code:java}
 session.transfer(fileToProcess, REL_FAILURE);
{code}



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