alamb opened a new issue, #4798:
URL: https://github.com/apache/arrow-rs/issues/4798
**Is your feature request related to a problem or challenge? Please describe
what you are trying to do.**
In InfluxDB IOx we cache `ObjectMeta` (among other things) and thus
calculate the memory used in order to limit the amount of memory used for
caching
**Describe the solution you'd like**
In order to have accurate memory usage accounting, it would be nice to have
an API like
```rust
impl ObjectMeta {
/// return the total bytes of memory used by this object, including heap
space
pub fn memory_bytes(&self) -> usize {
...
}
}
```
**Describe alternatives you've considered**
We could cache the raw data directly as `Strings` and recreate `ObjectMeta`
when needed
**Additional context**
See context in
https://github.com/influxdata/influxdb_iox/pull/8577/files#r1316378812
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