Package org.apache.hadoop.ozone.container.common.interfaces

Interface VolumeChoosingPolicy

All Known Implementing Classes:

CapacityVolumeChoosingPolicy, RoundRobinVolumeChoosingPolicy

@Private
public interface VolumeChoosingPolicy

This interface specifies the policy for choosing volumes to store replicas.

Method Summary

Modifier and Type	Method	Description
HddsVolume	chooseVolume(List<HddsVolume> volumes, long maxContainerSize)	Choose a volume to place a container, given a list of volumes and the max container size sought for storage.

Method Details

chooseVolume

HddsVolume chooseVolume(List<HddsVolume> volumes,
 long maxContainerSize)
                 throws IOException

Choose a volume to place a container, given a list of volumes and the max container size sought for storage. The implementations of this interface must be thread-safe.

Parameters:

volumes - - a list of available volumes.

maxContainerSize - - the maximum size of the container for which a volume is sought.

Returns:

the chosen volume.

Throws:

IOException - when disks are unavailable or are full.