public class RoundRobinVolumeChoosingPolicy<V extends FsVolumeSpi> extends Object implements org.apache.hadoop.hdfs.server.datanode.fsdataset.VolumeChoosingPolicy<V>
| Constructor and Description |
|---|
RoundRobinVolumeChoosingPolicy() |
| Modifier and Type | Method and Description |
|---|---|
V |
chooseVolume(List<V> volumes,
long blockSize)
Choose a volume to place a replica,
given a list of volumes and the replica size sought for storage.
|
public RoundRobinVolumeChoosingPolicy()
public V chooseVolume(List<V> volumes, long blockSize) throws IOException
org.apache.hadoop.hdfs.server.datanode.fsdataset.VolumeChoosingPolicychooseVolume in interface org.apache.hadoop.hdfs.server.datanode.fsdataset.VolumeChoosingPolicy<V extends FsVolumeSpi>volumes - - a list of available volumes.blockSize - - the size of the replica for which a volume is sought.IOException - when disks are unavailable or are full.Copyright © 2014 Apache Software Foundation. All Rights Reserved.