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### _Why are the changes needed?_
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To avoid performance issues in the topK scenario and close#1018 .
### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [ ] Add screenshots for manual tests if appropriate
- [ ] [Run test](https://kyuubi.readthedocs.io/en/latest/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#1054 from byyue/feature-1018.
Closes#1018
21de1fcb [Brian Yue] Set spark.sql.execution.topKSortFallbackThreshold to 10000
Authored-by: Brian Yue <code.byyue@gmail.com>
Signed-off-by: Kent Yao <yao@apache.org>
033784c691