beyond1920 opened a new pull request, #9811:
URL: https://github.com/apache/hudi/pull/9811
### Change Logs
After Insert overwrite into a non-empty partition/table with empty datasets,
the subsequent query results are incorrect
For example, current dataset of partition dt=2021-07-17 is
||id||name||dt||
|1|'a'|'2021-07-17'|
Using the following SQL to overwrite partition dt=2021-07-17
{code:java}
insert overwrite table targetT partition(dt='2021-07-17') select id, name,
price from sourceT where dt=2021-07-17 and product='test'
{code}
If the input dataset is empty. We expect after insert overwrite, the
partition of dt=2021-07-17 is empty.
However, the query result is still the old data.
This pr aims to fix this bug.
### Impact
NA
### Risk level (write none, low medium or high below)
NA
### Documentation Update
NA
### Contributor's checklist
- [ ] Read through [contributor's
guide](https://hudi.apache.org/contribute/how-to-contribute)
- [ ] Change Logs and Impact were stated clearly
- [ ] Adequate tests were added if applicable
- [ ] CI passed
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