Hi, all.
I want to start a discussion about the FLIP-229: Introduces Join Hint for
Flink SQL Batch Job(The cwiki[1] is not ready completely but you can see the
whole details in docs[2]).
Join Hint is a common solution in many popular computing engines and DBs to
improve the shortcomings of the optimizer by intervening in optimizing the
plan. By Join Hint, users can intervene in the selection of the join strategy
in optimizer, and manually optimize the execution plan to improve the
performance of the query.
In this FLIP, we propose some join hints by the existing join strategies in
Flink SQL for Batch job.
I'm look forward to your feedback about FLIP-229.
--
Best！
Xuyang
[1]
https://cwiki.apache.org/confluence/display/FLINK/FLIP-229%3A+Introduces+Join+Hint+for+Flink+SQL+Batch+Job
[2]
https://docs.google.com/document/d/1IL00ME0Z0nlXGDWTUPODobVQMAm94PAPr9pw9EdGkoQ/edit?usp=sharing
