org.apache.hadoop.hbase.replication.regionserver

Class MetricsSource

java.lang.Object

org.apache.hadoop.hbase.replication.regionserver.MetricsSource

@InterfaceAudience.Private
public class MetricsSource
extends Object

This class is for maintaining the various replication statistics for a source and publishing them through the metrics interfaces.

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.commons.logging.Log	LOG
static String	SOURCE_AGE_OF_LAST_SHIPPED_OP
static String	SOURCE_LOG_EDITS_FILTERED
static String	SOURCE_LOG_EDITS_READ
static String	SOURCE_LOG_READ_IN_BYTES
static String	SOURCE_SHIPPED_BATCHES
static String	SOURCE_SHIPPED_KBS
static String	SOURCE_SHIPPED_OPS
static String	SOURCE_SIZE_OF_LOG_QUEUE

Constructor Summary

Constructors

Constructor and Description
MetricsSource(String id) Constructor used to register the metrics

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Removes all metrics about this Source.
void	incrLogEditsFiltered() The number of log edits filtered out.
void	incrLogEditsRead() Increment the number of log edits read by one.
void	incrLogReadInBytes(long readInBytes) increase the byte number read by source from log file
void	refreshAgeOfLastShippedOp() Convenience method to use the last given timestamp to refresh the age of the last edit.
void	setAgeOfLastShippedOp(long timestamp) Set the age of the last edit that was shipped
void	setSizeOfLogQueue(int size) Set the size of the log queue
void	shipBatch(long batchSize, int sizeInKB) Convience method to apply changes to metrics do to shipping a batch of logs.

Methods inherited from class java.lang.Object

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

Field Detail

SOURCE_SIZE_OF_LOG_QUEUE

public static final String SOURCE_SIZE_OF_LOG_QUEUE

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Constant Field Values

SOURCE_AGE_OF_LAST_SHIPPED_OP

public static final String SOURCE_AGE_OF_LAST_SHIPPED_OP

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Constant Field Values

SOURCE_LOG_EDITS_READ

public static final String SOURCE_LOG_EDITS_READ

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Constant Field Values

SOURCE_LOG_EDITS_FILTERED

public static final String SOURCE_LOG_EDITS_FILTERED

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Constant Field Values

SOURCE_SHIPPED_BATCHES

public static final String SOURCE_SHIPPED_BATCHES

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Constant Field Values

SOURCE_SHIPPED_KBS

public static final String SOURCE_SHIPPED_KBS

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Constant Field Values

SOURCE_SHIPPED_OPS

public static final String SOURCE_SHIPPED_OPS

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Constant Field Values

SOURCE_LOG_READ_IN_BYTES

public static final String SOURCE_LOG_READ_IN_BYTES

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Constant Field Values

LOG

public static final org.apache.commons.logging.Log LOG

Constructor Detail

MetricsSource

public MetricsSource(String id)

Constructor used to register the metrics

Parameters:

id - Name of the source this class is monitoring

Method Detail

setAgeOfLastShippedOp

public void setAgeOfLastShippedOp(long timestamp)

Set the age of the last edit that was shipped

Parameters:

timestamp - write time of the edit

refreshAgeOfLastShippedOp

public void refreshAgeOfLastShippedOp()

Convenience method to use the last given timestamp to refresh the age of the last edit. Used when replication fails and need to keep that metric accurate.

setSizeOfLogQueue

public void setSizeOfLogQueue(int size)

Set the size of the log queue

Parameters:

size - the size.

incrLogEditsRead

public void incrLogEditsRead()

Increment the number of log edits read by one.

incrLogEditsFiltered

public void incrLogEditsFiltered()

The number of log edits filtered out.

shipBatch

public void shipBatch(long batchSize,
             int sizeInKB)

Convience method to apply changes to metrics do to shipping a batch of logs.

Parameters:

batchSize - the size of the batch that was shipped to sinks.

incrLogReadInBytes

public void incrLogReadInBytes(long readInBytes)

increase the byte number read by source from log file

clear

public void clear()

Removes all metrics about this Source.