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…#36022)
### Rationale for this change
This change allows you to read a large Parquet file per row group.
- ref: #36001
### What changes are included in this PR?
- Add Parquet::ArrowFileReader#each_row_group
- Add the related test about it
### Are these changes tested?
Yes
- I don't have confidence about the test. Could you give me a comment?
### Are there any user-facing changes?
No
Close: #36008
* Closes: #36008
Authored-by: otegami <a.s.takuya1026@gmail.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>
Describe the enhancement requested
It's a convenient method:
Component(s)
Parquet, Ruby
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