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

Class MetadataVolume

java.lang.Object

org.apache.hadoop.ozone.container.common.volume.StorageVolume

org.apache.hadoop.ozone.container.common.volume.MetadataVolume

All Implemented Interfaces:

org.apache.hadoop.hdfs.server.datanode.checker.Checkable<Boolean,org.apache.hadoop.hdfs.server.datanode.checker.VolumeCheckResult>

public class MetadataVolume
extends StorageVolume

MetadataVolume represents a volume in datanode for metadata(ratis). Datanode itself doesn't consume this volume, but only manages checks and volume info for it.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MetadataVolume.Builder	Builder class for MetadataVolume.

Nested classes/interfaces inherited from class org.apache.hadoop.ozone.container.common.volume.StorageVolume

StorageVolume.VolumeState, StorageVolume.VolumeType

Field Summary

Fields inherited from class org.apache.hadoop.ozone.container.common.volume.StorageVolume

TMP_DIR_NAME, TMP_DISK_CHECK_DIR_NAME

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MetadataVolume(MetadataVolume.Builder b)

Method Summary

Modifier and Type	Method	Description
void	createTmpDirs(String workingDirName)
void	format(String cid)
String	getStorageID()
StorageVolume.VolumeType	getType()

Methods inherited from class org.apache.hadoop.ozone.container.common.volume.StorageVolume

check, containerUsedSpace, createTmpSubdirIfNeeded, createWorkingDir, decrementUsedSpace, equals, failVolume, getClusterID, getConf, getContainerDirsPath, getCTime, getCurrentUsage, getDatanodeConfig, getDatanodeUuid, getDiskCheckDir, getLayoutVersion, getReport, getStorageDir, getStorageState, getStorageType, getTmpDir, getVolumeRootDir, getVolumeSet, getVolumeUsage, getWorkingDirName, hashCode, incrementUsedSpace, initialize, initializeImpl, isFailed, refreshVolumeUsage, reportBuilder, setGatherContainerUsages, setState, shutdown, start, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

MetadataVolume

protected MetadataVolume(MetadataVolume.Builder b)
                  throws IOException

Throws:

IOException

Method Details

getType

public StorageVolume.VolumeType getType()

format

public void format(String cid)
            throws IOException

Overrides:

format in class StorageVolume

Throws:

IOException

createTmpDirs

public void createTmpDirs(String workingDirName)

Overrides:

createTmpDirs in class StorageVolume

getStorageID

public String getStorageID()

Overrides:

getStorageID in class StorageVolume