Hi devs, I just created epic issue for Storm SQL phase 3 which tracks efforts for adding available data sources for Storm SQL. https://issues.apache.org/jira/browse/STORM-2075
Currently Storm SQL only supports Apache Kafka as producer (input table) and consumer (output table) which is not sufficient for industry use cases. Since we support various external modules as spout and bolt, and also Trident state, we can expand them to data sources of Storm SQL. The implementation of storm-sql-kafka <https://github.com/apache/storm/tree/master/external/sql/storm-sql-kafka> is simple enough so adding other modules as data source should be simple, too. There're still some other works in Phase II <https://issues.apache.org/jira/browse/STORM-1433> to make Storm SQL production ready, so any contributions on Storm SQL would be really appreciated. Please let me know if you have any questions or suggestions. Thanks, Jungtaek Lim (HeartSaVioR)
