类 org.apache.hadoop.hdfs.server.common.Storage.StorageDirectory
的使用

使用Storage.StorageDirectory的程序包

程序包	说明
org.apache.hadoop.hdfs.server.common
org.apache.hadoop.hdfs.server.datanode
org.apache.hadoop.hdfs.server.namenode

org.apache.hadoop.hdfs.server.common中Storage.StorageDirectory的使用

类型参数类型为Storage.StorageDirectory的org.apache.hadoop.hdfs.server.common中的字段

限定符和类型	字段和说明
protected List<Storage.StorageDirectory>	Storage.storageDirs

返回Storage.StorageDirectory的org.apache.hadoop.hdfs.server.common中的方法

限定符和类型	方法和说明
Storage.StorageDirectory	Storage.getStorageDir(int idx)

返回变量类型为Storage.StorageDirectory的类型的org.apache.hadoop.hdfs.server.common中的方法

限定符和类型	方法和说明
Iterator<Storage.StorageDirectory>	Storage.dirIterator() Return default iterator This iterator returns all entires of storageDirs
Iterator<Storage.StorageDirectory>	Storage.dirIterator(Storage.StorageDirType dirType) Return iterator based on Storage Directory Type This iterator selects entires of storageDirs of type dirType and returns them via the Iterator

参数类型为Storage.StorageDirectory的org.apache.hadoop.hdfs.server.common中的方法

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

org.apache.hadoop.hdfs.server.datanode中Storage.StorageDirectory的使用

参数类型为Storage.StorageDirectory的org.apache.hadoop.hdfs.server.datanode中的方法

限定符和类型	方法和说明
protected void	DataStorage.getFields(Properties props, Storage.StorageDirectory sd)
boolean	DataStorage.isConversionNeeded(Storage.StorageDirectory sd)
protected void	DataStorage.setFields(Properties props, Storage.StorageDirectory sd)

org.apache.hadoop.hdfs.server.namenode中Storage.StorageDirectory的使用

参数类型为Storage.StorageDirectory的org.apache.hadoop.hdfs.server.namenode中的方法

限定符和类型	方法和说明
protected void	FSImage.getFields(Properties props, Storage.StorageDirectory sd)
boolean	FSImage.isConversionNeeded(Storage.StorageDirectory sd)
protected void	FSImage.moveCurrent(Storage.StorageDirectory sd) Move current to lastcheckpoint.tmp and recreate empty current.
protected void	FSImage.moveLastCheckpoint(Storage.StorageDirectory sd) Move lastcheckpoint.tmp to previous.checkpoint
protected void	FSImage.saveCurrent(Storage.StorageDirectory sd) Save current image and empty journal into current directory.
protected void	FSImage.setFields(Properties props, Storage.StorageDirectory sd) Write last checkpoint time and version file into the storage directory.