org.apache.hadoop.yarn.server.resourcemanager.blacklist

Class SimpleBlacklistManager

java.lang.Object

org.apache.hadoop.yarn.server.resourcemanager.blacklist.SimpleBlacklistManager

All Implemented Interfaces:

BlacklistManager

public class SimpleBlacklistManager
extends Object
implements BlacklistManager

Maintains a list of failed nodes and returns that as long as number of blacklisted nodes is below a threshold percentage of total nodes. If more than threshold number of nodes are marked as failure they all are returned as removal from blacklist so previous additions are reversed.

Constructor Summary

Constructors

Constructor and Description
SimpleBlacklistManager(int numberOfNodeManagerHosts, double blacklistDisableFailureThreshold)

Method Summary

Methods

Modifier and Type	Method and Description
void	addNode(String node) Report failure of a container on node.
org.apache.hadoop.yarn.api.records.ResourceBlacklistRequest	getBlacklistUpdates() Get ResourceBlacklistRequest that indicate which nodes should be added or to removed from the blacklist.
void	refreshNodeHostCount(int nodeHostCount) Refresh the number of NodeManagers available for scheduling.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleBlacklistManager

public SimpleBlacklistManager(int numberOfNodeManagerHosts,
                      double blacklistDisableFailureThreshold)

Method Detail

addNode

public void addNode(String node)

Description copied from interface: BlacklistManager

Report failure of a container on node.

Specified by:

addNode in interface BlacklistManager

Parameters:

node - that has a container failure

refreshNodeHostCount

public void refreshNodeHostCount(int nodeHostCount)

Description copied from interface: BlacklistManager

Refresh the number of NodeManagers available for scheduling.

Specified by:

refreshNodeHostCount in interface BlacklistManager

Parameters:

nodeHostCount - is the number of node hosts.

getBlacklistUpdates

public org.apache.hadoop.yarn.api.records.ResourceBlacklistRequest getBlacklistUpdates()

Description copied from interface: BlacklistManager

Get ResourceBlacklistRequest that indicate which nodes should be added or to removed from the blacklist.

Specified by:

getBlacklistUpdates in interface BlacklistManager

Returns:

ResourceBlacklistRequest