huaxingao opened a new pull request #33754:
URL: https://github.com/apache/spark/pull/33754
### What changes were proposed in this pull request?
Add `supportsIndex` interface
### Why are the changes needed?
Many data sources support index to improvement query performance. In order
to take advantage of the index support in data source, this `supportsIndex`
interface is added to let user to create/drop an index, list indexes, etc.
### Does this PR introduce _any_ user-facing change?
yes, the following new APIs are added:
- createIndex
- deleteIndex
- indexExists
- listIndexes
- dropIndex
- restoreIndex
- refreshIndex
- alterIndex
### How was this patch tested?
only interface is added for now. Tests will be added when doing the
implementation
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