ueshin opened a new pull request, #40356:
URL: https://github.com/apache/spark/pull/40356
### What changes were proposed in this pull request?
Fixes `DataFrameWriter.save` to work without path parameter.
### Why are the changes needed?
`DataFrameWriter.save` should work without table name or path parameter
because some data sources, such as jdbc, noop, works without those parameters.
```py
>>> print(spark.range(10).write.format("noop").mode("append").save())
Traceback (most recent call last):
...
AssertionError: Invalid configuration of WriteCommand, neither path or table
present.
```
### Does this PR introduce _any_ user-facing change?
The data sources that don't need path or table parameter will work.
```py
>>> print(spark.range(10).write.format("noop").mode("append").save())
None
```
### How was this patch tested?
Added a test.
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