abhishekrb19 opened a new pull request, #14378: URL: https://github.com/apache/druid/pull/14378
This PR adds a new table `INFORMATION_SCHEMA.ROUTINES`. See the proposal in https://github.com/apache/druid/issues/14346. ### Description The implementation currently exposes information about all aggregator functions: - The table contains the following columns: * ROUTINE_CATALOG: Name of the database. This will always be set to druid. * ROUTINE_SCHEMA: Name of the schema. This will always be set to INFORMATION_SCHEMA. * ROUTINE_NAME: Name of the function or operator. E.g., APPROX_COUNT_DISTINCT_DS_THETA * ROUTINE_TYPE: Type of routine - FUNCTION, FUNCTION_STAR, POSTFIX, etc. * IS_AGGREGATOR: Is the routine an aggregator or not. Returns YES for aggregator functions; NO for scalar functions. * SIGNATURES: Possible signatures for the routine as a string. Since Calcite is the source of truth for all the registered functions, including ones loaded through custom extensions, the implementation uses the Calcite's operator table to extract this information at runtime. TODO - More unit tests to follow. - Docs need to be updated. #### Release note Expose Druid functions via `INFORMATION_SCHEMA.ROUTINES` table. <hr> ##### Key changed/added classes in this PR * `InformationSchema.java` <hr> <!-- Check the items by putting "x" in the brackets for the done things. Not all of these items apply to every PR. Remove the items which are not done or not relevant to the PR. None of the items from the checklist below are strictly necessary, but it would be very helpful if you at least self-review the PR. --> This PR has: - [x] been self-reviewed. - [ ] using the [concurrency checklist](https://github.com/apache/druid/blob/master/dev/code-review/concurrency.md) (Remove this item if the PR doesn't have any relation to concurrency.) - [ ] added documentation for new or modified features or behaviors. - [x] a release note entry in the PR description. - [ ] added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links. - [ ] added or updated version, license, or notice information in [licenses.yaml](https://github.com/apache/druid/blob/master/dev/license.md) - [ ] added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader. - [x] added unit tests or modified existing tests to cover new code paths, ensuring the threshold for [code coverage](https://github.com/apache/druid/blob/master/dev/code-review/code-coverage.md) is met. - [x] been tested in a test Druid cluster. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
