Grok-based parsers are an important part of Metron and Grok is an extremely adaptable, if complex, language for specifying structure in data.
Right now, the flow is generally: 1. Get some sample data 2. Use an online utility to test grok statements 3. upload grok statement to HDFS 4. restart parser topology Given the demo around managing stellar transformations inside of the REPL, I began to think that it might be a more coherent and integrated experience to manage grok inside of the REPL. This would involve stellar functions to - test grok statements - read grok statements from HDFS - push grok statements to HDFS I made a few JIRAs to outline it here <https://issues.apache.org/jira/browse/METRON-454>.
