Gang Tim Liu created HIVE-4377: ---------------------------------- Summary: Add more comment to https://reviews.facebook.net/D1209 (HIVE-2340) Key: HIVE-4377 URL: https://issues.apache.org/jira/browse/HIVE-4377 Project: Hive Issue Type: Bug Components: Query Processor Reporter: Gang Tim Liu Assignee: Navis
thanks a lot for addressing optimization in HIVE-2340. Awesome! Since we are developing at a very fast pace, it would be really useful to think about maintainability and testing of the large codebase. Highlights which are applicable for D1209: 1. Javadoc for all public/private functions, except for setters/getters. For any complex function, clear examples (input/output) would really help. 2. Specially, for query optimizations, it might be a good idea to have a simple working query at the top, and the expected changes. For e.g.. The operator tree for that query at each step, or a detailed explanation at the top. 3. If possible, the test name (.q file) where the function is being invoked, or the query which would potentially test that scenario, if it is a query processor change. 4. Comments in each test (.q file) that should include the jira number, what is it trying to test. Assumptions about each query. 5. Reduce the output for each test whenever query is outputting more than 10 results, it should have a reason. Otherwise, each query result should be bounded by 10 rows. thanks a lot -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira