Package org.apache.hadoop.fs.azurebfs.services

Interface AbfsCounters

All Superinterfaces:

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

All Known Implementing Classes:

AbfsCountersImpl

@Private
@Unstable
public interface AbfsCounters
extends org.apache.hadoop.fs.statistics.IOStatisticsSource, org.apache.hadoop.fs.statistics.DurationTrackerFactory

An interface for Abfs counters.

Method Summary

Modifier and Type	Method	Description
java.lang.String	formString(java.lang.String prefix, java.lang.String separator, java.lang.String suffix, boolean all)	Form a String of the all the statistics and present in an organized manner.
void	incrementCounter(AbfsStatistic statistic, long value)	Increment a AbfsStatistic by a long value.
java.util.Map<java.lang.String,java.lang.Long>	toMap()	Convert all the statistics into a key-value pair map to be used for testing.
org.apache.hadoop.fs.statistics.DurationTracker	trackDuration(java.lang.String key)	Start a DurationTracker for a request.

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

trackDuration

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

getIOStatistics

Method Detail

incrementCounter

void incrementCounter(AbfsStatistic statistic,
                      long value)

Increment a AbfsStatistic by a long value.

Parameters:

statistic - AbfsStatistic to be incremented.

value - the value to increment the statistic by.

formString

java.lang.String formString(java.lang.String prefix,
                            java.lang.String separator,
                            java.lang.String suffix,
                            boolean all)

Form a String of the all the statistics and present in an organized manner.

Parameters:

prefix - the prefix to be set.

separator - the separator between the statistic name and value.

suffix - the suffix to be used.

all - enable all the statistics to be displayed or not.

Returns:

String of all the statistics and their values.

toMap

@VisibleForTesting
java.util.Map<java.lang.String,java.lang.Long> toMap()

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

Returns:

map with statistic name as key and statistic value as the map value.

trackDuration

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

Start a DurationTracker for a request.

Specified by:

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

Parameters:

key - Name of the DurationTracker statistic.

Returns:

an instance of DurationTracker.