org.apache.storm.scheduler.blacklist

Class BlacklistScheduler

java.lang.Object

org.apache.storm.scheduler.blacklist.BlacklistScheduler

All Implemented Interfaces:

IScheduler

public class BlacklistScheduler
extends Object
implements IScheduler

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.storm.shade.com.google.common.collect.EvictingQueue<HashMap<String,Set<Integer>>>	badSupervisorsToleranceSlidingWindow
protected Set<String>	blacklistHost
protected IBlacklistStrategy	blacklistStrategy
protected Map<String,Set<Integer>>	cachedSupervisors
static int	DEFAULT_BLACKLIST_SCHEDULER_RESUME_TIME
static int	DEFAULT_BLACKLIST_SCHEDULER_TOLERANCE_COUNT
static int	DEFAULT_BLACKLIST_SCHEDULER_TOLERANCE_TIME
protected int	nimbusMonitorFreqSecs
protected IReporter	reporter
protected int	resumeTime
protected int	toleranceCount
protected int	toleranceTime
protected int	windowSize

Constructor Summary

Constructors

Constructor and Description
BlacklistScheduler(IScheduler underlyingScheduler, StormMetricsRegistry metricsRegistry)

Method Summary

Modifier and Type	Method and Description
void	cleanup() called once when the system is shutting down, should be idempotent.
Map<String,Map<String,Double>>	config() This function returns the scheduler’s configuration.
void	prepare(Map<String,Object> conf)
void	schedule(Topologies topologies, Cluster cluster) Set assignments for the topologies which needs scheduling.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_BLACKLIST_SCHEDULER_RESUME_TIME

public static final int DEFAULT_BLACKLIST_SCHEDULER_RESUME_TIME

See Also:

Constant Field Values

DEFAULT_BLACKLIST_SCHEDULER_TOLERANCE_COUNT

public static final int DEFAULT_BLACKLIST_SCHEDULER_TOLERANCE_COUNT

See Also:

Constant Field Values

DEFAULT_BLACKLIST_SCHEDULER_TOLERANCE_TIME

public static final int DEFAULT_BLACKLIST_SCHEDULER_TOLERANCE_TIME

See Also:

Constant Field Values

toleranceTime

protected int toleranceTime

toleranceCount

protected int toleranceCount

resumeTime

protected int resumeTime

reporter

protected IReporter reporter

blacklistStrategy

protected IBlacklistStrategy blacklistStrategy

nimbusMonitorFreqSecs

protected int nimbusMonitorFreqSecs

cachedSupervisors

protected Map<String,Set<Integer>> cachedSupervisors

badSupervisorsToleranceSlidingWindow

protected org.apache.storm.shade.com.google.common.collect.EvictingQueue<HashMap<String,Set<Integer>>> badSupervisorsToleranceSlidingWindow

windowSize

protected int windowSize

blacklistHost

protected Set<String> blacklistHost

Constructor Detail

BlacklistScheduler

public BlacklistScheduler(IScheduler underlyingScheduler,
                          StormMetricsRegistry metricsRegistry)

Method Detail

prepare

public void prepare(Map<String,Object> conf)

Specified by:

prepare in interface IScheduler

cleanup

public void cleanup()

Description copied from interface: IScheduler

called once when the system is shutting down, should be idempotent.

Specified by:

cleanup in interface IScheduler

schedule

public void schedule(Topologies topologies,
                     Cluster cluster)

Description copied from interface: IScheduler

Set assignments for the topologies which needs scheduling. The new assignments is available through cluster.getAssignments()

Specified by:

schedule in interface IScheduler

Parameters:

topologies - all the topologies in the cluster, some of them need schedule. Topologies object here only contain static information about topologies. Information like assignments, slots are all in the cluster object.

cluster - the cluster these topologies are running in. cluster contains everything user need to develop a new scheduling logic. e.g. supervisors information, available slots, current assignments for all the topologies etc. User can set the new assignment for topologies using cluster.setAssignmentById()`

config

public Map<String,Map<String,Double>> config()

Description copied from interface: IScheduler

This function returns the scheduler’s configuration.

Specified by:

config in interface IScheduler

Returns:

The scheduler’s configuration.