org.apache.hadoop.fs.azurebfs

Class AbfsCountersImpl

java.lang.Object

org.apache.hadoop.fs.azurebfs.AbfsCountersImpl

All Implemented Interfaces:

AbfsCounters, org.apache.hadoop.fs.statistics.DurationTrackerFactory, org.apache.hadoop.fs.statistics.IOStatisticsSource

public class AbfsCountersImpl
extends Object
implements AbfsCounters

Instrumentation of Abfs counters.

Constructor Summary

Constructors

Constructor and Description
AbfsCountersImpl(URI uri)

Method Summary

Modifier and Type	Method and Description
String	formString(String prefix, String separator, String suffix, boolean all) Form a String of the all the statistics and present in an organized manner.
org.apache.hadoop.fs.statistics.IOStatistics	getIOStatistics() Returning the instance of IOStatisticsStore used to collect the metrics in AbfsCounters.
void	incrementCounter(AbfsStatistic statistic, long value) Increment a AbfsStatistic by a long value.
Map<String,Long>	toMap() Convert all the statistics into a key-value pair map to be used for testing.
org.apache.hadoop.fs.statistics.DurationTracker	trackDuration(String key) Tracks the duration of a statistic.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.fs.statistics.DurationTrackerFactory

trackDuration

Constructor Detail

AbfsCountersImpl

public AbfsCountersImpl(URI uri)

Method Detail

incrementCounter

public void incrementCounter(AbfsStatistic statistic,
                             long value)

Increment a AbfsStatistic by a long value. Increment a statistic with some value.

Specified by:

incrementCounter in interface AbfsCounters

Parameters:

statistic - AbfsStatistic need to be incremented.

value - long value to be incremented by.

formString

public String formString(String prefix,
                         String separator,
                         String suffix,
                         boolean all)

Form a String of the all the statistics and present in an organized manner. Method to aggregate all the counters in the MetricRegistry and form a string with prefix, separator and suffix.

Specified by:

formString in interface AbfsCounters

Parameters:

prefix - string that would be before metric.

separator - string that would be between metric name and value.

suffix - string that would be after metric value.

all - gets all the values even if unchanged.

Returns:

a String with all the metrics and their values.

toMap

@VisibleForTesting
public Map<String,Long> toMap()

Convert all the statistics into a key-value pair map to be used for testing. Map of all the counters for testing.

Specified by:

toMap in interface AbfsCounters

Returns:

a map of the IOStatistics counters.

getIOStatistics

public org.apache.hadoop.fs.statistics.IOStatistics getIOStatistics()

Returning the instance of IOStatisticsStore used to collect the metrics in AbfsCounters.

Specified by:

getIOStatistics in interface org.apache.hadoop.fs.statistics.IOStatisticsSource

Returns:

instance of IOStatistics.

trackDuration

public org.apache.hadoop.fs.statistics.DurationTracker trackDuration(String key)

Tracks the duration of a statistic.

Specified by:

trackDuration in interface AbfsCounters

Specified by:

trackDuration in interface org.apache.hadoop.fs.statistics.DurationTrackerFactory

Parameters:

key - name of the statistic.

Returns:

DurationTracker for that statistic.