org.apache.ignite

Interface DataRegionMetricsProvider

public interface DataRegionMetricsProvider

This interface provides calculated metrics for data region.

Method Summary

Modifier and Type	Method and 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.