Package org.apache.pinot.broker.failuredetector

Class BaseExponentialBackoffRetryFailureDetector

java.lang.Object

org.apache.pinot.broker.failuredetector.BaseExponentialBackoffRetryFailureDetector

All Implemented Interfaces:

FailureDetector

Direct Known Subclasses:

ConnectionFailureDetector

@ThreadSafe
public abstract class BaseExponentialBackoffRetryFailureDetector
extends Object
implements FailureDetector

The BaseExponentialBackoffRetryFailureDetector is a base failure detector implementation that retries the unhealthy servers with exponential increasing delays.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	BaseExponentialBackoffRetryFailureDetector.RetryInfo	Encapsulates the retry related information.

Nested classes/interfaces inherited from interface org.apache.pinot.broker.failuredetector.FailureDetector

FailureDetector.Listener

Field Summary

Fields

Modifier and Type	Field	Description
protected org.apache.pinot.common.metrics.BrokerMetrics	_brokerMetrics
protected List<FailureDetector.Listener>	_listeners
protected int	_maxRetries
protected String	_name
protected double	_retryDelayFactor
protected DelayQueue<BaseExponentialBackoffRetryFailureDetector.RetryInfo>	_retryInfoDelayQueue
protected long	_retryInitialDelayNs
protected Thread	_retryThread
protected boolean	_running
protected ConcurrentHashMap<String,BaseExponentialBackoffRetryFailureDetector.RetryInfo>	_unhealthyServerRetryInfoMap

Constructor Summary

Constructors

Constructor	Description
BaseExponentialBackoffRetryFailureDetector()

Method Summary

Modifier and Type	Method	Description
Set<String>	getUnhealthyServers()	Returns all the unhealthy servers.
void	init(org.apache.pinot.spi.env.PinotConfiguration config, org.apache.pinot.common.metrics.BrokerMetrics brokerMetrics)	Initializes the failure detector.
void	markServerHealthy(String instanceId)	Marks a server as healthy.
void	markServerUnhealthy(String instanceId)	Marks a server as unhealthy.
void	register(FailureDetector.Listener listener)	Registers a listener to the failure detector.
void	start()	Starts the failure detector.
void	stop()	Stops the failure detector.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.pinot.broker.failuredetector.FailureDetector

notifyQueryFinished, notifyQuerySubmitted

Field Detail

_name

protected final String _name

_listeners

protected final List<FailureDetector.Listener> _listeners

_unhealthyServerRetryInfoMap

protected final ConcurrentHashMap<String,BaseExponentialBackoffRetryFailureDetector.RetryInfo> _unhealthyServerRetryInfoMap

_retryInfoDelayQueue

protected final DelayQueue<BaseExponentialBackoffRetryFailureDetector.RetryInfo> _retryInfoDelayQueue

_brokerMetrics

protected org.apache.pinot.common.metrics.BrokerMetrics _brokerMetrics

_retryInitialDelayNs

protected long _retryInitialDelayNs

_retryDelayFactor

protected double _retryDelayFactor

_maxRetries

protected int _maxRetries

_retryThread

protected Thread _retryThread

_running

protected volatile boolean _running

Constructor Detail

BaseExponentialBackoffRetryFailureDetector

public BaseExponentialBackoffRetryFailureDetector()

Method Detail

init

public void init(org.apache.pinot.spi.env.PinotConfiguration config,
                 org.apache.pinot.common.metrics.BrokerMetrics brokerMetrics)

Description copied from interface: FailureDetector

Initializes the failure detector.

Specified by:

init in interface FailureDetector

register

public void register(FailureDetector.Listener listener)

Description copied from interface: FailureDetector

Registers a listener to the failure detector.

Specified by:

register in interface FailureDetector

start

public void start()

Description copied from interface: FailureDetector

Starts the failure detector. Listeners should be registered before starting the failure detector.

Specified by:

start in interface FailureDetector

markServerHealthy

public void markServerHealthy(String instanceId)

Description copied from interface: FailureDetector

Marks a server as healthy.

Specified by:

markServerHealthy in interface FailureDetector

markServerUnhealthy

public void markServerUnhealthy(String instanceId)

Description copied from interface: FailureDetector

Marks a server as unhealthy.

Specified by:

markServerUnhealthy in interface FailureDetector

getUnhealthyServers

public Set<String> getUnhealthyServers()

Description copied from interface: FailureDetector

Returns all the unhealthy servers.

Specified by:

getUnhealthyServers in interface FailureDetector

stop

public void stop()

Description copied from interface: FailureDetector

Stops the failure detector.

Specified by:

stop in interface FailureDetector