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

Removed Methods
void corruptPreUpgradeStorage(File)  
boolean isConversionNeeded(StorageDirectory)  
void writeCorruptedData(RandomAccessFile)  
 

Added Methods
boolean is203LayoutVersion(int)  
boolean isPreUpgradableLayout(StorageDirectory) Return true if the layout of the given storage directory is from a version of Hadoop prior to the introduction of the "current" and "previous" directories which allow upgrade and rollback.
String listStorageDirectories() generate storage list (debug line)
 

Added Fields
int[] LAYOUT_VERSIONS_203 Layout versions of 0.20.203 release