HyukjinKwon opened a new pull request #33429:
URL: https://github.com/apache/spark/pull/33429
### What changes were proposed in this pull request?
This PR proposes to rename:
- Rename `*Reader`/`*reader` to `*Read`/`*read` for rules and execution plan
(user-facing doc/config name remain untouched)
- `*ShuffleReaderExec` ->`*ShuffleReadExec`
- `isLocalReader` -> `isLocalRead`
- ...
- Rename `CustomShuffle*` prefix to `AQEShuffle*`
- Rename `OptimizeLocalShuffleReader` rule to `OptimizeShuffleWithLocalRead`
### Why are the changes needed?
There are multiple problems in the current naming:
- `CustomShuffle*` -> `AQEShuffle*`
it sounds like it is a pluggable API. However, this is actually only
used by AQE.
- `OptimizeLocalShuffleReader` -> `OptimizeShuffleWithLocalRead`
it is the name of a rule but it can be misread as a reader, which is
counterintuative
- `*ReaderExec` -> `*ReadExec`
Reader execution reads a bit odd. It should better be read execution
(like `ScanExec`, `ProjectExec` and `FilterExec`). I can't find the reason to
name it with something that performs an action.
### Does this PR introduce _any_ user-facing change?
### How was this patch tested?
Existing unittests should cover the changes.
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