org.apache.hadoop.dfs.namenode.metrics
Class NameNodeStatistics

java.lang.Object
  org.apache.hadoop.dfs.namenode.metrics.NameNodeStatistics

All Implemented Interfaces:

NameNodeStatisticsMBean

public class NameNodeStatistics
extends Object
implements NameNodeStatisticsMBean

This is the implementation of the Name Node JMX MBean

Constructor Summary

NameNodeStatistics(NameNodeMetrics nameNodeMetrics)
This constructs and registers the NameNodeStatisticsMBean

Method Summary

long	getBlockReportAverageTime() Average time for Block Report Processing in last interval
long	getBlockReportMaxTime() The Maximum Block Report Processing Time since reset was called
long	getBlockReportMinTime() The Minimum Block Report Processing Time since reset was called
int	getBlockReportNum() Number of block Reports processed in the last interval
int	getFSImageLoadTime() Time spent loading the FS Image at startup
long	getJournalSyncAverageTime() Average time for Journal Sync in last interval
long	getJournalSyncMaxTime() The Maximum Journal Sync Time since reset was called
long	getJournalSyncMinTime() The Minimum Journal Sync Time since reset was called
int	getJournalSyncNum() Number of Journal Syncs in the last interval
long	getJournalTransactionAverageTime() Average time for Journal transactions in last interval
long	getJournalTransactionMaxTime() The Maximum Journal Transaction Time since reset was called
long	getJournalTransactionMinTime() The Minimum Journal Transaction Time since reset was called
int	getJournalTransactionNum() Number of Journal Transactions in the last interval
int	getNumAddBlockOps() Number of add block operations in the last interval
int	getNumCreateFileOps() Number of file creation operations in the last interval
int	getNumDeleteFileOps() Number of file deletion operations in the last interval
int	getNumFilesCreated() Number of files created in the last interval
int	getNumFilesListed() Deprecated. call getNumGetListingOps() instead
int	getNumFilesRenamed() Number of files renamed in the last interval
int	getNumGetBlockLocations() Number of NameNode.getBlockLocations(String,long,long)
int	getNumGetListingOps() Number of files listed in the last interval
int	getSafemodeTime() The time spent in the Safemode at startup
void	resetAllMinMax() Reset all min max times
void	shutdown() Shuts down the statistics - unregisters the mbean

Methods inherited from class java.lang.Object

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

Constructor Detail

NameNodeStatistics

public NameNodeStatistics(NameNodeMetrics nameNodeMetrics)

This constructs and registers the NameNodeStatisticsMBean

Parameters:

nameNodeMetrics - - the metrics from which the mbean gets its info

Method Detail

shutdown

public void shutdown()

Shuts down the statistics - unregisters the mbean

getBlockReportAverageTime

public long getBlockReportAverageTime()

Description copied from interface: NameNodeStatisticsMBean

Average time for Block Report Processing in last interval

Specified by:

getBlockReportAverageTime in interface NameNodeStatisticsMBean

Returns:

time in msec

getBlockReportMaxTime

public long getBlockReportMaxTime()

Description copied from interface: NameNodeStatisticsMBean

The Maximum Block Report Processing Time since reset was called

Specified by:

getBlockReportMaxTime in interface NameNodeStatisticsMBean

Returns:

time in msec

getBlockReportMinTime

public long getBlockReportMinTime()

Description copied from interface: NameNodeStatisticsMBean

The Minimum Block Report Processing Time since reset was called

Specified by:

getBlockReportMinTime in interface NameNodeStatisticsMBean

Returns:

time in msec

getBlockReportNum

public int getBlockReportNum()

Description copied from interface: NameNodeStatisticsMBean

Number of block Reports processed in the last interval

Specified by:

getBlockReportNum in interface NameNodeStatisticsMBean

Returns:

number of operations

getJournalTransactionAverageTime

public long getJournalTransactionAverageTime()

Description copied from interface: NameNodeStatisticsMBean

Average time for Journal transactions in last interval

Specified by:

getJournalTransactionAverageTime in interface NameNodeStatisticsMBean

Returns:

time in msec

getJournalTransactionNum

public int getJournalTransactionNum()

Description copied from interface: NameNodeStatisticsMBean

Number of Journal Transactions in the last interval

Specified by:

getJournalTransactionNum in interface NameNodeStatisticsMBean

Returns:

number of operations

getJournalTransactionMaxTime

public long getJournalTransactionMaxTime()

Description copied from interface: NameNodeStatisticsMBean

The Maximum Journal Transaction Time since reset was called

Specified by:

getJournalTransactionMaxTime in interface NameNodeStatisticsMBean

Returns:

time in msec

getJournalTransactionMinTime

public long getJournalTransactionMinTime()

Description copied from interface: NameNodeStatisticsMBean

The Minimum Journal Transaction Time since reset was called

Specified by:

getJournalTransactionMinTime in interface NameNodeStatisticsMBean

Returns:

time in msec

getJournalSyncAverageTime

public long getJournalSyncAverageTime()

Description copied from interface: NameNodeStatisticsMBean

Average time for Journal Sync in last interval

Specified by:

getJournalSyncAverageTime in interface NameNodeStatisticsMBean

Returns:

time in msec

getJournalSyncMaxTime

public long getJournalSyncMaxTime()

Description copied from interface: NameNodeStatisticsMBean

The Maximum Journal Sync Time since reset was called

Specified by:

getJournalSyncMaxTime in interface NameNodeStatisticsMBean

Returns:

time in msec

getJournalSyncMinTime

public long getJournalSyncMinTime()

Description copied from interface: NameNodeStatisticsMBean

The Minimum Journal Sync Time since reset was called

Specified by:

getJournalSyncMinTime in interface NameNodeStatisticsMBean

Returns:

time in msec

getJournalSyncNum

public int getJournalSyncNum()

Description copied from interface: NameNodeStatisticsMBean

Number of Journal Syncs in the last interval

Specified by:

getJournalSyncNum in interface NameNodeStatisticsMBean

Returns:

number of operations

getSafemodeTime

public int getSafemodeTime()

Description copied from interface: NameNodeStatisticsMBean

The time spent in the Safemode at startup

Specified by:

getSafemodeTime in interface NameNodeStatisticsMBean

Returns:

time in msec

getFSImageLoadTime

public int getFSImageLoadTime()

Description copied from interface: NameNodeStatisticsMBean

Time spent loading the FS Image at startup

Specified by:

getFSImageLoadTime in interface NameNodeStatisticsMBean

Returns:

time in msec

resetAllMinMax

public void resetAllMinMax()

Description copied from interface: NameNodeStatisticsMBean

Reset all min max times

Specified by:

resetAllMinMax in interface NameNodeStatisticsMBean

getNumFilesCreated

public int getNumFilesCreated()

Description copied from interface: NameNodeStatisticsMBean

Number of files created in the last interval

Specified by:

getNumFilesCreated in interface NameNodeStatisticsMBean

Returns:

number of operations

getNumFilesListed

@Deprecated
public int getNumFilesListed()

Deprecated. call getNumGetListingOps() instead

Description copied from interface: NameNodeStatisticsMBean

Number of files listed in the last interval

Specified by:

getNumFilesListed in interface NameNodeStatisticsMBean

Returns:

number of operations

getNumGetListingOps

public int getNumGetListingOps()

Description copied from interface: NameNodeStatisticsMBean

Number of files listed in the last interval

Specified by:

getNumGetListingOps in interface NameNodeStatisticsMBean

Returns:

number of operations

getNumCreateFileOps

public int getNumCreateFileOps()

Description copied from interface: NameNodeStatisticsMBean

Number of file creation operations in the last interval

Specified by:

getNumCreateFileOps in interface NameNodeStatisticsMBean

Returns:

number of file creation operations

getNumDeleteFileOps

public int getNumDeleteFileOps()

Description copied from interface: NameNodeStatisticsMBean

Number of file deletion operations in the last interval

Specified by:

getNumDeleteFileOps in interface NameNodeStatisticsMBean

Returns:

number of file deletion operations

getNumAddBlockOps

public int getNumAddBlockOps()

Description copied from interface: NameNodeStatisticsMBean

Number of add block operations in the last interval

Specified by:

getNumAddBlockOps in interface NameNodeStatisticsMBean

Returns:

number of add block operations

getNumGetBlockLocations

public int getNumGetBlockLocations()

Description copied from interface: NameNodeStatisticsMBean

Number of NameNode.getBlockLocations(String,long,long)

Specified by:

getNumGetBlockLocations in interface NameNodeStatisticsMBean

Returns:

number of operations

getNumFilesRenamed

public int getNumFilesRenamed()

Description copied from interface: NameNodeStatisticsMBean

Number of files renamed in the last interval

Specified by:

getNumFilesRenamed in interface NameNodeStatisticsMBean

Returns:

number of operations