[jira] [Created] (METRON-732) When an error happens in an composed function in stellar, the real exception is not bubbled up

[Casey Stella (JIRA)]

Casey Stella created METRON-732:
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             Summary: When an error happens in an composed function in stellar, 
the real exception is not bubbled up
                 Key: METRON-732
                 URL: https://issues.apache.org/jira/browse/METRON-732
             Project: Metron
          Issue Type: Bug
            Reporter: Casey Stella


If you have a function which throws an exception and it is an inner function of 
a composition, then the exception isn't bubbled up.  

For instance, if {{PROFILE_WINDOW}} throws an exception in the following:
{{STATS_MEAN(STATS_MERGE(PROFILE_GET('stat', 'global', PROFILE_WINDOW('5 minute 
window starting ago'))))}}

We will get 
{{org.apache.metron.common.dsl.ParseException: Unable to execute: expected at 
least 3 argument(s), found 2}}

Rather than the actual exception thrown from PROFILE_WINDOW



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