Package org.apache.hadoop.hdfs.protocol

Class LayoutFlags

java.lang.Object

org.apache.hadoop.hdfs.protocol.LayoutFlags

@Private
public class LayoutFlags
extends Object

LayoutFlags represent features which the FSImage and edit logs can either support or not, independently of layout version. Note: all flags starting with 'test' are reserved for unit test purposes.

Method Summary

Modifier and Type	Method	Description
static void	read(DataInputStream in)	Read next int from given input stream.
static void	write(DataOutputStream out)

Methods inherited from class java.lang.Object

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

Method Details

read

public static void read(DataInputStream in)
                 throws IOException

Read next int from given input stream. If the value is not 0 (unsupported feature flags), throw appropriate IOException.

Parameters:

in - The stream to read from.

Throws:

IOException - If next byte read from given stream is not 0.

write

public static void write(DataOutputStream out)
                  throws IOException

Throws:

IOException