org.apache.nutch.ndfs
Class HeartbeatData

java.lang.Object
  org.apache.nutch.ndfs.HeartbeatData

All Implemented Interfaces:

FSConstants, Writable

public class HeartbeatData

extends Object

implements Writable, FSConstants

Heartbeat data

Author:

Mike Cafarella

Field Summary

Fields inherited from interface org.apache.nutch.ndfs.FSConstants

BLOCK_SIZE, BLOCKREPORT_INTERVAL, CHUNKED_ENCODING, COMPLETE_SUCCESS, DATANODE_STARTUP_PERIOD, EXPIRE_INTERVAL, HEARTBEAT_INTERVAL, LEASE_PERIOD, OBSOLETE_INTERVAL, OP_ACK, OP_BLOCKRECEIVED, OP_BLOCKREPORT, OP_CLIENT_ABANDONBLOCK, OP_CLIENT_ABANDONBLOCK_ACK, OP_CLIENT_ADDBLOCK, OP_CLIENT_ADDBLOCK_ACK, OP_CLIENT_COMPLETEFILE, OP_CLIENT_COMPLETEFILE_ACK, OP_CLIENT_DATANODE_HINTS, OP_CLIENT_DATANODE_HINTS_ACK, OP_CLIENT_DATANODEREPORT, OP_CLIENT_DATANODEREPORT_ACK, OP_CLIENT_DELETE, OP_CLIENT_DELETE_ACK, OP_CLIENT_EXISTS, OP_CLIENT_EXISTS_ACK, OP_CLIENT_ISDIR, OP_CLIENT_ISDIR_ACK, OP_CLIENT_LISTING, OP_CLIENT_LISTING_ACK, OP_CLIENT_MKDIRS, OP_CLIENT_MKDIRS_ACK, OP_CLIENT_OBTAINLOCK, OP_CLIENT_OBTAINLOCK_ACK, OP_CLIENT_OPEN, OP_CLIENT_OPEN_ACK, OP_CLIENT_RAWSTATS, OP_CLIENT_RAWSTATS_ACK, OP_CLIENT_RELEASELOCK, OP_CLIENT_RELEASELOCK_ACK, OP_CLIENT_RENAMETO, OP_CLIENT_RENAMETO_ACK, OP_CLIENT_RENEW_LEASE, OP_CLIENT_RENEW_LEASE_ACK, OP_CLIENT_STARTFILE, OP_CLIENT_STARTFILE_ACK, OP_CLIENT_TRYAGAIN, OP_ERROR, OP_FAILURE, OP_HEARTBEAT, OP_INVALIDATE_BLOCKS, OP_READ_BLOCK, OP_READSKIP_BLOCK, OP_TRANSFERBLOCKS, OP_TRANSFERDATA, OP_WRITE_BLOCK, OPERATION_FAILED, RUNLENGTH_ENCODING, STILL_WAITING, SYSTEM_STARTUP_PERIOD, WRITE_COMPLETE

Constructor Summary

HeartbeatData()

HeartbeatData(String name, long capacity, long remaining)

Method Summary

long	getCapacity()
UTF8	getName()
long	getRemaining()
void	readFields(DataInput in) Reads the fields of this object from in.
void	write(DataOutput out) Writes the fields of this object to out.

Methods inherited from class java.lang.Object

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

Constructor Detail

HeartbeatData

public HeartbeatData()

HeartbeatData

public HeartbeatData(String name,
                     long capacity,
                     long remaining)

Method Detail

write

public void write(DataOutput out)
           throws IOException

Description copied from interface: Writable

Writes the fields of this object to out.

Specified by:

write in interface Writable

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Description copied from interface: Writable

Reads the fields of this object from in. For efficiency, implementations should attempt to re-use storage in the existing object where possible.

Specified by:

readFields in interface Writable

Throws:

IOException

getName

public UTF8 getName()

getCapacity

public long getCapacity()

getRemaining

public long getRemaining()