mapleFU commented on PR #36286:
URL: https://github.com/apache/arrow/pull/36286#issuecomment-1610598237
I've a case, for example, we batch every 2000 rows. And write a file with
200,000 rows, the meta would be like:
```
"TotalRows": "205434",
"NumberOfRowGroups": "103",
"NumberOfRealColumns": "97",
"NumberOfColumns": "97",
```
The file is 3.5Mib, after changing to one row-group, the file can be just
450kb. This also making reading from it slower
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