Luosuu commented on issue #40981:
URL: https://github.com/apache/arrow/issues/40981#issuecomment-2038101224
I see. If I understand correctly, you mean when page index enabled,
for example:
```json
{ # <-- First record
"a": 1, # <-- the top level fields are a, b, c, and d
"b": { # <-- b is always provided (not nullable)
"b1": 1, # <-- b1 and b2 are "nested" fields of "b"
"b2": 3 # <-- b2 is always provided (not nullable)
},
"d": {
"d1": 1 # <-- d1 is a "nested" field of "d"
}
}
```
when we have page index enabled: they are stored in one page;
when we do NOT have page index: "a", "b", "c", and "d" are stored in
different pages.
Thank you so much again. I am trying my best to understand now.
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