zhenlineo opened a new pull request, #43544:
URL: https://github.com/apache/spark/pull/43544
### What changes were proposed in this pull request?
Adding the proto change needed for clusterBy.
Example of the clusterBy API:
DataframeWriterV1
```
df.write
.format("delta")
.clusterBy("clusteringColumn1", "clusteringColumn2")
.save(...) or saveAsTable(...)
```
DataFrameWriterV2
```
df.writeTo(...).using("delta")
.clusterBy("clusteringColumn1", "clusteringColumn2")
.create() or replace() or createOrReplace()
```
### Why are the changes needed?
The first PR to introduce the proto change for the feature.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Existing tests
### Was this patch authored or co-authored using generative AI tooling?
No
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