Package org.apache.hadoop.hbase.client.metrics

Class RegionScanMetricsData

java.lang.Object

org.apache.hadoop.hbase.client.metrics.RegionScanMetricsData

@Private
public class RegionScanMetricsData
extends Object

Captures region level scan metrics as a map of metric name (String) -> Value (AtomicLong).

One instance stores scan metrics for a single region only.

Field Summary

Fields

Modifier and Type	Field	Description
private final Map<String,AtomicLong>	counters
private ScanMetricsRegionInfo	scanMetricsRegionInfo

Constructor Summary

Constructors

Constructor	Description
RegionScanMetricsData()

Method Summary

Modifier and Type	Method	Description
(package private) void	addToCounter(String counterName, long delta)
(package private) Map<String,Long>	collectMetrics(boolean reset)
(package private) AtomicLong	createCounter(String counterName)
(package private) ScanMetricsRegionInfo	getScanMetricsRegionInfo()
(package private) void	initScanMetricsRegionInfo(String encodedRegionName, ServerName serverName)	Populate encoded region name and server name details if not already populated.
(package private) void	setCounter(String counterName, long value)
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

counters

private final Map<String,AtomicLong> counters

scanMetricsRegionInfo

private ScanMetricsRegionInfo scanMetricsRegionInfo

Constructor Details

RegionScanMetricsData

public RegionScanMetricsData()

Method Details

createCounter

AtomicLong createCounter(String counterName)

setCounter

void setCounter(String counterName,
 long value)

addToCounter

void addToCounter(String counterName,
 long delta)

collectMetrics

Map<String,Long> collectMetrics(boolean reset)

toString

public String toString()

Overrides:

toString in class Object

initScanMetricsRegionInfo

void initScanMetricsRegionInfo(String encodedRegionName,
 ServerName serverName)

Populate encoded region name and server name details if not already populated. If details are already populated and a re-attempt is done then UnsupportedOperationException is thrown.

getScanMetricsRegionInfo

ScanMetricsRegionInfo getScanMetricsRegionInfo()