Package org.opensearch.index

Class ShardIndexingPressureTracker.PerformanceTracker

java.lang.Object

org.opensearch.index.ShardIndexingPressureTracker.PerformanceTracker

Enclosing class:

ShardIndexingPressureTracker

public static class ShardIndexingPressureTracker.PerformanceTracker
extends java.lang.Object

Performance Tracker is used to track the request performance statistics for every operation, per shard. This includes: a. latencyInMillis - Total indexing time take by requests that were processed successfully for a shard. b. lastSuccessfulRequestTimestamp - Timestamp of last successful request for a shard. c. TotalOutstandingRequests - Total requests outstanding for a shard at any given point. d. ThroughputMovingAverage - Total moving average throughput value for last N requests. e. ThroughputMovingQueue - Queue that holds the last N requests throughput such that there exists a sliding window which keeps moving everytime a new request comes. At any given point it tracks last N requests only. EWMA cannot be used here as it evaluate the historical average, while here it just needs the average of last N requests.

Constructor Summary

Constructors

Constructor	Description
PerformanceTracker()

Method Summary

Modifier and Type	Method	Description
long	addLatencyInMillis(long latency)
boolean	addNewThroughout(java.lang.Double newThroughput)
java.lang.Double	getFirstThroughput()
long	getLastSuccessfulRequestTimestamp()
long	getLatencyInMillis()
long	getThroughputMovingAverage()
long	getThroughputMovingQueueSize()
long	getTotalOutstandingRequests()
long	incrementTotalOutstandingRequests()
void	resetTotalOutstandingRequests()
void	updateLastSuccessfulRequestTimestamp(long timeStamp)
long	updateThroughputMovingAverage(long newAvg)

Methods inherited from class java.lang.Object

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

Constructor Details

PerformanceTracker

public PerformanceTracker()

Method Details

getLatencyInMillis

public long getLatencyInMillis()

addLatencyInMillis

public long addLatencyInMillis(long latency)

getLastSuccessfulRequestTimestamp

public long getLastSuccessfulRequestTimestamp()

updateLastSuccessfulRequestTimestamp

public void updateLastSuccessfulRequestTimestamp(long timeStamp)

getTotalOutstandingRequests

public long getTotalOutstandingRequests()

incrementTotalOutstandingRequests

public long incrementTotalOutstandingRequests()

resetTotalOutstandingRequests

public void resetTotalOutstandingRequests()

getThroughputMovingAverage

public long getThroughputMovingAverage()

updateThroughputMovingAverage

public long updateThroughputMovingAverage(long newAvg)

addNewThroughout

public boolean addNewThroughout(java.lang.Double newThroughput)

getFirstThroughput

public java.lang.Double getFirstThroughput()

getThroughputMovingQueueSize

public long getThroughputMovingQueueSize()