Package org.apache.storm.scheduler.blacklist

Class BlacklistScheduler

java.lang.Object

org.apache.storm.scheduler.blacklist.BlacklistScheduler

All Implemented Interfaces:

INodeAssignmentSentCallBack, IScheduler

public class BlacklistScheduler
extends Object
implements IScheduler

Field Summary

Fields

Modifier and Type	Field	Description
protected org.apache.storm.shade.com.google.common.collect.EvictingQueue<Map<String,Set<Integer>>>	badSupervisorsToleranceSlidingWindow
protected Set<String>	blacklistedSupervisorIds
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 org.apache.storm.shade.com.google.common.collect.EvictingQueue<Map<String,Integer>>	sendAssignmentFailureCount
protected int	toleranceCount
protected int	toleranceTime
protected int	windowSize

Constructor Summary

Constructors

Constructor	Description
BlacklistScheduler(IScheduler underlyingScheduler)

Method Summary

Modifier and Type	Method	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.
Set<String>	getBlacklistSupervisorIds()
void	nodeAssignmentSent(String node, boolean successful)
void	prepare(Map<String,Object> conf, StormMetricsRegistry metricsRegistry)
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<Map<String,Set<Integer>>> badSupervisorsToleranceSlidingWindow

sendAssignmentFailureCount

protected org.apache.storm.shade.com.google.common.collect.EvictingQueue<Map<String,Integer>> sendAssignmentFailureCount

windowSize

protected int windowSize

blacklistedSupervisorIds

protected volatile Set<String> blacklistedSupervisorIds

Constructor Detail

BlacklistScheduler

public BlacklistScheduler(IScheduler underlyingScheduler)

Method Detail

prepare

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

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.

getBlacklistSupervisorIds

public Set<String> getBlacklistSupervisorIds()

nodeAssignmentSent

public void nodeAssignmentSent(String node,
                               boolean successful)

Specified by:

nodeAssignmentSent in interface INodeAssignmentSentCallBack