DataRegionMetricsProvider (Ignite 2.17.0)

```
public interface DataRegionMetricsProvider
```
This interface provides calculated metrics for data region.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`long`	`emptyDataPages()`	Calculates empty data pages count for region.
`long`	`partiallyFilledPagesFreeSpace()`	Calculates free space of partially filled pages for this data region.

- Method Detail
  - partiallyFilledPagesFreeSpace
```
long partiallyFilledPagesFreeSpace()
```
    Calculates free space of partially filled pages for this data region. It does not include empty data pages.
    
    Returns:
    
    free space in bytes.
  - emptyDataPages
```
long emptyDataPages()
```
    Calculates empty data pages count for region. It counts only totally free pages that can be reused (e. g. pages that are contained in reuse bucket of free list).
    
    Returns:
    
    empty data pages count.