DataNodeMetrics (Apache Hadoop HDFS 3.4.1.300-dep-1001 API)

java.lang.Object
- org.apache.hadoop.hdfs.server.datanode.metrics.DataNodeMetrics

```
@Private
@Metrics(about="DataNode metrics",
         context="dfs")
public class DataNodeMetrics
extends java.lang.Object
```
This class is for maintaining the various DataNode statistics and publishing them through the metrics interfaces. This also registers the JMX MBean for RPC.
This class has a number of metrics variables that are publicly accessible; these variables (objects) have methods to update their values; for example:
blocksRead.inc()

Constructor Summary

Constructors
Constructor	Description
`DataNodeMetrics(java.lang.String name, java.lang.String sessionId, int[] intervals, org.apache.hadoop.metrics2.source.JvmMetrics jvmMetrics)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addBlockChecksumOp(long latency)`
`void`	`addBlockReport(long latency, java.lang.String rpcMetricSuffix)`
`void`	`addCacheReport(long latency)`
`void`	`addCheckAndUpdateOp(long latency)`	Add addCheckAndUpdateOp metrics.
`void`	`addConvertTemporaryToRbwOp(long latency)`	Add addConvertTemporaryToRbwOp metrics.
`void`	`addCopyBlockOp(long latency)`
`void`	`addCreateRbwOp(long latency)`	Add addCreateRbwOp metrics.
`void`	`addCreateTemporaryOp(long latency)`	Add addCreateTemporaryOp metrics.
`void`	`addFinalizeBlockOp(long latency)`	Add addFinalizeBlockOp metrics.
`void`	`addFlushNanos(long latencyNanos)`
`void`	`addFsyncNanos(long latencyNanos)`
`void`	`addHeartbeat(long latency, java.lang.String rpcMetricSuffix)`
`void`	`addHeartbeatTotal(long latency, java.lang.String rpcMetricSuffix)`
`void`	`addIncrementalBlockReport(long latency, java.lang.String rpcMetricSuffix)`
`void`	`addLifeline(long latency, java.lang.String rpcMetricSuffix)`
`void`	`addNumProcessedCommands(long latency)`	Add processedCommandsOp metrics.
`void`	`addPacketAckRoundTripTimeNanos(long latencyNanos)`
`void`	`addRamDiskBlocksEvictionWindowMs(long latencyMs)`
`void`	`addRamDiskBlocksLazyPersistWindowMs(long latencyMs)`
`void`	`addRamDiskBytesWrite(long bytes)`
`void`	`addReadBlockOp(long latency)`
`void`	`addReadTransferRate(long readTransferRate)`
`void`	`addRecoverRbwOp(long latency)`	Add addRecoverRbwOp metrics.
`void`	`addReplaceBlockOp(long latency)`
`void`	`addSendDataPacketBlockedOnNetworkNanos(long latencyNanos)`
`void`	`addSendDataPacketTransferNanos(long latencyNanos)`
`void`	`addUnfinalizeBlockOp(long latency)`	Add addUnfinalizeBlockOp metrics.
`void`	`addUpdateReplicaUnderRecoveryOp(long latency)`	Add addUpdateReplicaUnderRecoveryOp metrics.
`void`	`addWriteBlockOp(long latency)`
`static DataNodeMetrics`	`create(org.apache.hadoop.conf.Configuration conf, java.lang.String dnName)`
`void`	`decrDataNodeActiveXceiversCount()`
`void`	`decrDataNodeBlockRecoveryWorkerCount()`
`void`	`decrDataNodePacketResponderCount()`
`void`	`decrDataNodeReadActiveXceiversCount()`
`void`	`decrDataNodeWriteActiveXceiversCount()`
`long`	`getBlocksRemoved()`
`int`	`getDataNodeActiveXceiverCount()`
`int`	`getDataNodeBlockRecoveryWorkerCount()`
`int`	`getDataNodePacketResponderCount()`
`org.apache.hadoop.hdfs.server.protocol.DataNodeUsageReport`	`getDNUsageReport(long timeSinceLastReport)`
`long`	`getECInvalidReconstructionTasks()`
`org.apache.hadoop.metrics2.source.JvmMetrics`	`getJvmMetrics()`
`void`	`incrActorCmdQueueLength(int delta)`
`void`	`incrBlocksCached(int delta)`
`void`	`incrBlocksDeletedInPendingIBR()`
`void`	`incrBlocksGetLocalPathInfo()`	Increment for getBlockLocalPathInfo calls
`void`	`incrBlocksInPendingIBR()`
`void`	`incrBlocksRead()`
`void`	`incrBlocksReceivedInPendingIBR()`
`void`	`incrBlocksReceivingInPendingIBR()`
`void`	`incrBlocksRemoved(int delta)`
`void`	`incrBlocksReplicated()`
`void`	`incrBlocksUncached(int delta)`
`void`	`incrBlocksVerified()`
`void`	`incrBlocksWritten()`
`void`	`incrBlockVerificationFailures()`
`void`	`incrBytesRead(int delta)`
`void`	`incrBytesWritten(int delta)`
`void`	`incrDataNodeActiveXceiversCount()`
`void`	`incrDataNodeBlockRecoveryWorkerCount()`
`void`	`incrDatanodeNetworkErrors()`
`void`	`incrDataNodePacketResponderCount()`
`void`	`incrDataNodeReadActiveXceiversCount()`
`void`	`incrDataNodeWriteActiveXceiversCount()`
`void`	`incrECDecodingTime(long decodingTimeNanos)`
`void`	`incrECFailedReconstructionTasks()`
`void`	`incrECInvalidReconstructionTasks()`
`void`	`incrECReconstructionBytesRead(long bytes)`
`void`	`incrECReconstructionBytesWritten(long bytes)`
`void`	`incrECReconstructionDecodingTime(long millis)`
`void`	`incrECReconstructionReadTime(long millis)`
`void`	`incrECReconstructionRemoteBytesRead(long bytes)`
`void`	`incrECReconstructionTasks()`
`void`	`incrECReconstructionValidateTime(long millis)`
`void`	`incrECReconstructionWriteTime(long millis)`
`void`	`incrFsyncCount()`
`void`	`incrNumProcessedCommands()`
`void`	`incrPacketsReceived()`
`void`	`incrPacketsSlowWriteToDisk()`
`void`	`incrPacketsSlowWriteToMirror()`
`void`	`incrPacketsSlowWriteToOsCache()`
`void`	`incrRamDiskBlocksDeletedBeforeLazyPersisted()`
`void`	`incrRamDiskBlocksEvicted()`
`void`	`incrRamDiskBlocksEvictedWithoutRead()`
`void`	`incrRamDiskBlocksLazyPersisted()`
`void`	`incrRamDiskBlocksReadHits()`
`void`	`incrRamDiskBlocksWrite()`
`void`	`incrRamDiskBlocksWriteFallback()`
`void`	`incrRamDiskBytesLazyPersisted(long bytes)`
`void`	`incrReadsFromClient(boolean local, long size)`
`void`	`incrReplaceBlockOpOnSameHost()`
`void`	`incrReplaceBlockOpOnSameMount()`
`void`	`incrReplaceBlockOpToOtherHost()`
`void`	`incrSlowAckToUpstreamCount()`
`void`	`incrSlowFlushOrSyncCount()`
`void`	`incrTotalReadTime(long timeTaken)`
`void`	`incrTotalWriteTime(long timeTaken)`
`void`	`incrVolumeFailures(int size)`
`void`	`incrWritesFromClient(boolean local, long size)`
`java.lang.String`	`name()`
`void`	`resetBlocksInPendingIBR()`	Resets blocks in pending IBR to zero.
`void`	`setDataNodeActiveXceiversCount(int value)`
`void`	`setDataNodeBlockRecoveryWorkerCount(int value)`
`void`	`setDataNodePacketResponderCount(int value)`
`void`	`setDataNodeReadActiveXceiversCount(int value)`
`void`	`setDataNodeWriteActiveXceiversCount(int value)`
`void`	`shutdown()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataNodeMetrics

public DataNodeMetrics(java.lang.String name,
                       java.lang.String sessionId,
                       int[] intervals,
                       org.apache.hadoop.metrics2.source.JvmMetrics jvmMetrics)

Method Detail

create

public static DataNodeMetrics create(org.apache.hadoop.conf.Configuration conf,
                                     java.lang.String dnName)

name
```
public java.lang.String name()
```

getJvmMetrics

public org.apache.hadoop.metrics2.source.JvmMetrics getJvmMetrics()

addHeartbeat

public void addHeartbeat(long latency,
                         java.lang.String rpcMetricSuffix)

addHeartbeatTotal

public void addHeartbeatTotal(long latency,
                              java.lang.String rpcMetricSuffix)

addLifeline

public void addLifeline(long latency,
                        java.lang.String rpcMetricSuffix)

addBlockReport

public void addBlockReport(long latency,
                           java.lang.String rpcMetricSuffix)

addIncrementalBlockReport

public void addIncrementalBlockReport(long latency,
                                      java.lang.String rpcMetricSuffix)

addReadTransferRate

public void addReadTransferRate(long readTransferRate)

addCacheReport

public void addCacheReport(long latency)

incrBlocksReplicated
```
public void incrBlocksReplicated()
```

incrBlocksWritten
```
public void incrBlocksWritten()
```

incrBlocksRemoved

public void incrBlocksRemoved(int delta)

getBlocksRemoved
```
public long getBlocksRemoved()
```

incrBytesWritten

public void incrBytesWritten(int delta)

incrBlockVerificationFailures

public void incrBlockVerificationFailures()

incrBlocksVerified
```
public void incrBlocksVerified()
```

incrBlocksCached

public void incrBlocksCached(int delta)

incrBlocksUncached

public void incrBlocksUncached(int delta)

addReadBlockOp

public void addReadBlockOp(long latency)

addWriteBlockOp

public void addWriteBlockOp(long latency)

addReplaceBlockOp

public void addReplaceBlockOp(long latency)

addCopyBlockOp

public void addCopyBlockOp(long latency)

addBlockChecksumOp

public void addBlockChecksumOp(long latency)

incrBytesRead

public void incrBytesRead(int delta)

incrBlocksRead
```
public void incrBlocksRead()
```

incrFsyncCount
```
public void incrFsyncCount()
```

incrTotalWriteTime

public void incrTotalWriteTime(long timeTaken)

incrTotalReadTime

public void incrTotalReadTime(long timeTaken)

addPacketAckRoundTripTimeNanos

public void addPacketAckRoundTripTimeNanos(long latencyNanos)

addFlushNanos

public void addFlushNanos(long latencyNanos)

addFsyncNanos

public void addFsyncNanos(long latencyNanos)

shutdown
```
public void shutdown()
```

incrWritesFromClient

public void incrWritesFromClient(boolean local,
                                 long size)

incrReadsFromClient

public void incrReadsFromClient(boolean local,
                                long size)

incrVolumeFailures

public void incrVolumeFailures(int size)

incrSlowFlushOrSyncCount

public void incrSlowFlushOrSyncCount()

incrSlowAckToUpstreamCount

public void incrSlowAckToUpstreamCount()

incrDatanodeNetworkErrors

public void incrDatanodeNetworkErrors()

incrBlocksGetLocalPathInfo
```
public void incrBlocksGetLocalPathInfo()
```
Increment for getBlockLocalPathInfo calls

addSendDataPacketBlockedOnNetworkNanos

public void addSendDataPacketBlockedOnNetworkNanos(long latencyNanos)

addSendDataPacketTransferNanos

public void addSendDataPacketTransferNanos(long latencyNanos)

incrRamDiskBlocksWrite
```
public void incrRamDiskBlocksWrite()
```

incrRamDiskBlocksWriteFallback

public void incrRamDiskBlocksWriteFallback()

addRamDiskBytesWrite

public void addRamDiskBytesWrite(long bytes)

incrRamDiskBlocksReadHits

public void incrRamDiskBlocksReadHits()

incrRamDiskBlocksEvicted

public void incrRamDiskBlocksEvicted()

incrRamDiskBlocksEvictedWithoutRead

public void incrRamDiskBlocksEvictedWithoutRead()

addRamDiskBlocksEvictionWindowMs

public void addRamDiskBlocksEvictionWindowMs(long latencyMs)

incrRamDiskBlocksLazyPersisted

public void incrRamDiskBlocksLazyPersisted()

incrRamDiskBlocksDeletedBeforeLazyPersisted

public void incrRamDiskBlocksDeletedBeforeLazyPersisted()

incrRamDiskBytesLazyPersisted

public void incrRamDiskBytesLazyPersisted(long bytes)

addRamDiskBlocksLazyPersistWindowMs

public void addRamDiskBlocksLazyPersistWindowMs(long latencyMs)

resetBlocksInPendingIBR
```
public void resetBlocksInPendingIBR()
```
Resets blocks in pending IBR to zero.

incrBlocksInPendingIBR
```
public void incrBlocksInPendingIBR()
```

incrBlocksReceivingInPendingIBR

public void incrBlocksReceivingInPendingIBR()

incrBlocksReceivedInPendingIBR

public void incrBlocksReceivedInPendingIBR()

incrBlocksDeletedInPendingIBR

public void incrBlocksDeletedInPendingIBR()

incrECReconstructionTasks

public void incrECReconstructionTasks()

incrECFailedReconstructionTasks

public void incrECFailedReconstructionTasks()

incrECInvalidReconstructionTasks

public void incrECInvalidReconstructionTasks()

getECInvalidReconstructionTasks

public long getECInvalidReconstructionTasks()

incrDataNodeActiveXceiversCount

public void incrDataNodeActiveXceiversCount()

decrDataNodeActiveXceiversCount

public void decrDataNodeActiveXceiversCount()

setDataNodeActiveXceiversCount

public void setDataNodeActiveXceiversCount(int value)

getDataNodeActiveXceiverCount

public int getDataNodeActiveXceiverCount()

incrDataNodeReadActiveXceiversCount

public void incrDataNodeReadActiveXceiversCount()

decrDataNodeReadActiveXceiversCount

public void decrDataNodeReadActiveXceiversCount()

setDataNodeReadActiveXceiversCount

public void setDataNodeReadActiveXceiversCount(int value)

incrDataNodeWriteActiveXceiversCount

public void incrDataNodeWriteActiveXceiversCount()

decrDataNodeWriteActiveXceiversCount

public void decrDataNodeWriteActiveXceiversCount()

setDataNodeWriteActiveXceiversCount

public void setDataNodeWriteActiveXceiversCount(int value)

incrDataNodePacketResponderCount

public void incrDataNodePacketResponderCount()

decrDataNodePacketResponderCount

public void decrDataNodePacketResponderCount()

setDataNodePacketResponderCount

public void setDataNodePacketResponderCount(int value)

getDataNodePacketResponderCount

public int getDataNodePacketResponderCount()

incrDataNodeBlockRecoveryWorkerCount

public void incrDataNodeBlockRecoveryWorkerCount()

decrDataNodeBlockRecoveryWorkerCount

public void decrDataNodeBlockRecoveryWorkerCount()

setDataNodeBlockRecoveryWorkerCount

public void setDataNodeBlockRecoveryWorkerCount(int value)

getDataNodeBlockRecoveryWorkerCount

public int getDataNodeBlockRecoveryWorkerCount()

incrECDecodingTime

public void incrECDecodingTime(long decodingTimeNanos)

incrECReconstructionBytesRead

public void incrECReconstructionBytesRead(long bytes)

incrECReconstructionRemoteBytesRead

public void incrECReconstructionRemoteBytesRead(long bytes)

incrECReconstructionBytesWritten

public void incrECReconstructionBytesWritten(long bytes)

incrECReconstructionReadTime

public void incrECReconstructionReadTime(long millis)

incrECReconstructionWriteTime

public void incrECReconstructionWriteTime(long millis)

incrECReconstructionDecodingTime

public void incrECReconstructionDecodingTime(long millis)

incrECReconstructionValidateTime

public void incrECReconstructionValidateTime(long millis)

getDNUsageReport

public org.apache.hadoop.hdfs.server.protocol.DataNodeUsageReport getDNUsageReport(long timeSinceLastReport)

incrActorCmdQueueLength

public void incrActorCmdQueueLength(int delta)

incrNumProcessedCommands

public void incrNumProcessedCommands()

addNumProcessedCommands
```
public void addNumProcessedCommands(long latency)
```
Add processedCommandsOp metrics.

Parameters:

latency - milliseconds of process commands

addCreateRbwOp
```
public void addCreateRbwOp(long latency)
```
Add addCreateRbwOp metrics.

Parameters:

latency - milliseconds of create RBW file

addRecoverRbwOp
```
public void addRecoverRbwOp(long latency)
```
Add addRecoverRbwOp metrics.

Parameters:

latency - milliseconds of recovery RBW file

addConvertTemporaryToRbwOp
```
public void addConvertTemporaryToRbwOp(long latency)
```
Add addConvertTemporaryToRbwOp metrics.

Parameters:

latency - milliseconds of convert temporary to RBW file

addCreateTemporaryOp
```
public void addCreateTemporaryOp(long latency)
```
Add addCreateTemporaryOp metrics.

Parameters:

latency - milliseconds of create temporary block file

addFinalizeBlockOp
```
public void addFinalizeBlockOp(long latency)
```
Add addFinalizeBlockOp metrics.

Parameters:

latency - milliseconds of finalize block

addUnfinalizeBlockOp
```
public void addUnfinalizeBlockOp(long latency)
```
Add addUnfinalizeBlockOp metrics.

Parameters:

latency - milliseconds of un-finalize block file

addCheckAndUpdateOp
```
public void addCheckAndUpdateOp(long latency)
```
Add addCheckAndUpdateOp metrics.

Parameters:

latency - milliseconds of check and update block file

addUpdateReplicaUnderRecoveryOp
```
public void addUpdateReplicaUnderRecoveryOp(long latency)
```
Add addUpdateReplicaUnderRecoveryOp metrics.

Parameters:

latency - milliseconds of update and replica under recovery block file

incrPacketsReceived
```
public void incrPacketsReceived()
```

incrPacketsSlowWriteToMirror

public void incrPacketsSlowWriteToMirror()

incrPacketsSlowWriteToDisk

public void incrPacketsSlowWriteToDisk()

incrPacketsSlowWriteToOsCache

public void incrPacketsSlowWriteToOsCache()

incrReplaceBlockOpOnSameMount

public void incrReplaceBlockOpOnSameMount()

incrReplaceBlockOpOnSameHost

public void incrReplaceBlockOpOnSameHost()

incrReplaceBlockOpToOtherHost

public void incrReplaceBlockOpToOtherHost()

Class DataNodeMetrics

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DataNodeMetrics

Method Detail

create

name

getJvmMetrics

addHeartbeat

addHeartbeatTotal

addLifeline

addBlockReport

addIncrementalBlockReport

addReadTransferRate

addCacheReport

incrBlocksReplicated

incrBlocksWritten

incrBlocksRemoved

getBlocksRemoved

incrBytesWritten

incrBlockVerificationFailures

incrBlocksVerified

incrBlocksCached

incrBlocksUncached

addReadBlockOp

addWriteBlockOp

addReplaceBlockOp

addCopyBlockOp

addBlockChecksumOp

incrBytesRead

incrBlocksRead

incrFsyncCount

incrTotalWriteTime

incrTotalReadTime

addPacketAckRoundTripTimeNanos

addFlushNanos

addFsyncNanos

shutdown

incrWritesFromClient

incrReadsFromClient

incrVolumeFailures

incrSlowFlushOrSyncCount

incrSlowAckToUpstreamCount

incrDatanodeNetworkErrors

incrBlocksGetLocalPathInfo

addSendDataPacketBlockedOnNetworkNanos

addSendDataPacketTransferNanos

incrRamDiskBlocksWrite

incrRamDiskBlocksWriteFallback

addRamDiskBytesWrite

incrRamDiskBlocksReadHits

incrRamDiskBlocksEvicted

incrRamDiskBlocksEvictedWithoutRead

addRamDiskBlocksEvictionWindowMs

incrRamDiskBlocksLazyPersisted

incrRamDiskBlocksDeletedBeforeLazyPersisted

incrRamDiskBytesLazyPersisted

addRamDiskBlocksLazyPersistWindowMs

resetBlocksInPendingIBR

incrBlocksInPendingIBR

incrBlocksReceivingInPendingIBR

incrBlocksReceivedInPendingIBR

incrBlocksDeletedInPendingIBR

incrECReconstructionTasks

incrECFailedReconstructionTasks

incrECInvalidReconstructionTasks

getECInvalidReconstructionTasks

incrDataNodeActiveXceiversCount

decrDataNodeActiveXceiversCount

setDataNodeActiveXceiversCount

getDataNodeActiveXceiverCount

incrDataNodeReadActiveXceiversCount

decrDataNodeReadActiveXceiversCount

setDataNodeReadActiveXceiversCount

incrDataNodeWriteActiveXceiversCount

decrDataNodeWriteActiveXceiversCount

setDataNodeWriteActiveXceiversCount

incrDataNodePacketResponderCount