org.apache.hadoop.hdfs.server.namenode
Class CheckpointSignature
java.lang.Object
org.apache.hadoop.hdfs.server.common.StorageInfo
org.apache.hadoop.hdfs.server.namenode.CheckpointSignature
- All Implemented Interfaces:
- Comparable<CheckpointSignature>, org.apache.hadoop.io.Writable, org.apache.hadoop.io.WritableComparable<CheckpointSignature>
@InterfaceAudience.Private
public class CheckpointSignature
- extends StorageInfo
- implements org.apache.hadoop.io.WritableComparable<CheckpointSignature>
A unique signature intended to identify checkpoint transactions.
CheckpointSignature
public CheckpointSignature()
toString
public String toString()
- Overrides:
toString
in class Object
compareTo
public int compareTo(CheckpointSignature o)
- Specified by:
compareTo
in interface Comparable<CheckpointSignature>
equals
public boolean equals(Object o)
- Overrides:
equals
in class Object
hashCode
public int hashCode()
- Overrides:
hashCode
in class Object
write
public void write(DataOutput out)
throws IOException
- Specified by:
write
in interface org.apache.hadoop.io.Writable
- Overrides:
write
in class StorageInfo
- Throws:
IOException
readFields
public void readFields(DataInput in)
throws IOException
- Specified by:
readFields
in interface org.apache.hadoop.io.Writable
- Overrides:
readFields
in class StorageInfo
- Throws:
IOException
Copyright © 2009 The Apache Software Foundation