org.apache.hadoop.hdfs.server.datanode

类 DataStorage

java.lang.Object

org.apache.hadoop.hdfs.server.common.StorageInfo

org.apache.hadoop.hdfs.server.common.Storage

org.apache.hadoop.hdfs.server.datanode.DataStorage

public class DataStorage
extends Storage

Data storage information file.

另请参阅:

Storage

嵌套类概要

从类继承的嵌套类/接口 org.apache.hadoop.hdfs.server.common.Storage

Storage.StorageDirectory, Storage.StorageDirType, Storage.StorageState

字段概要

从类继承的字段 org.apache.hadoop.hdfs.server.common.Storage

LAST_PRE_UPGRADE_LAYOUT_VERSION, LAST_UPGRADABLE_HADOOP_VERSION, LAST_UPGRADABLE_LAYOUT_VERSION, LAYOUT_VERSIONS_203, LOG, PRE_GENERATIONSTAMP_LAYOUT_VERSION, STORAGE_DIR_CURRENT, STORAGE_FILE_VERSION, storageDirs

从类继承的字段 org.apache.hadoop.hdfs.server.common.StorageInfo

cTime, layoutVersion, namespaceID

构造器概要

构造器

构造器和说明
DataStorage(StorageInfo storageInfo, String strgID)

方法概要

方法

限定符和类型	方法和说明
protected void	corruptPreUpgradeStorage(File rootDir)
protected void	getFields(Properties props, Storage.StorageDirectory sd) Get common storage fields.
String	getStorageID()
boolean	isConversionNeeded(Storage.StorageDirectory sd)
protected void	setFields(Properties props, Storage.StorageDirectory sd) Set common storage fields.

从类继承的方法 org.apache.hadoop.hdfs.server.common.Storage

addStorageDir, checkVersionUpgradable, deleteDir, dirIterator, dirIterator, getNumStorageDirs, getRegistrationID, getStorageDir, is203LayoutVersion, isLockSupported, rename, unlockAll, writeAll, writeCorruptedData

从类继承的方法 org.apache.hadoop.hdfs.server.common.StorageInfo

getCTime, getLayoutVersion, getNamespaceID, setStorageInfo

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

DataStorage

public DataStorage(StorageInfo storageInfo,
           String strgID)

方法详细资料

getStorageID

public String getStorageID()

setFields

protected void setFields(Properties props,
             Storage.StorageDirectory sd)
                  throws IOException

从类复制的说明: Storage

Set common storage fields. Should be overloaded if additional fields need to be set.

覆盖:

setFields 在类中 Storage

抛出:

IOException

getFields

protected void getFields(Properties props,
             Storage.StorageDirectory sd)
                  throws IOException

从类复制的说明: Storage

Get common storage fields. Should be overloaded if additional fields need to be get.

覆盖:

getFields 在类中 Storage

抛出:

IOException

isConversionNeeded

public boolean isConversionNeeded(Storage.StorageDirectory sd)
                           throws IOException

指定者:

isConversionNeeded 在类中 Storage

抛出:

IOException

corruptPreUpgradeStorage

protected void corruptPreUpgradeStorage(File rootDir)
                                 throws IOException

指定者:

corruptPreUpgradeStorage 在类中 Storage

抛出:

IOException