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https://issues.apache.org/jira/browse/NIFI-1636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15198134#comment-15198134
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Joseph Percivall commented on NIFI-1636:
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Unless I am missing something, I believe that is what the logger is for. It
allows you to log the error and it will automatically print out the stack
trace, for example in GetFile:
https://github.com/apache/nifi/blob/ba83bf9c051b337b98d7c8dfa322364c87ce5955/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/GetFile.java#L461-L461
> Print entire stacktrace when unexpected exception occurs during onTrigger
> -------------------------------------------------------------------------
>
> Key: NIFI-1636
> URL: https://issues.apache.org/jira/browse/NIFI-1636
> Project: Apache NiFi
> Issue Type: Improvement
> Reporter: Ricky Saltzer
> Assignee: Ricky Saltzer
>
> As of now the try/catch clause in the {{AbstractProcessor}} class doesn't
> print the entire stacktrace when a processor throws an unexpected exception.
> Printing the entire stacktrace comes especially in handy when users are
> creating custom processors for internal use.
> The difference in information can be seen below:
> *Before*
> {code}
> java.lang.NumberFormatException: For input string: "five"
> {code}
> *After*
> {code}
> java.lang.NumberFormatException: For input string: "five"
> at
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
> at java.lang.Integer.parseInt(Integer.java:580)
> at java.lang.Integer.parseInt(Integer.java:615)
> at TestException.main(TestException.java:5)
> {code}
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