org.corfudb.infrastructure.management

Class PollReport

java.lang.Object

org.corfudb.infrastructure.management.PollReport

public class PollReport
extends Object

Poll Report generated by the detectors that poll to detect failed or healed nodes. This is consumed and analyzed by the Management Server to detect changes in the cluster and take appropriate action. Created by zlokhandwala on 3/21/17.

Constructor Summary

Constructors

Constructor and Description
PollReport()

Method Summary

Modifier and Type	Method and Description
com.google.common.collect.ImmutableSet<String>	getAllReachableNodes() Returns all connected nodes to the current node including nodes with higher epoch.
Set<String>	getFailedNodes() Contains list of servers disconnected from this node.
Set<String>	getReachableNodes() Contains list of servers successfully connected with current node.
boolean	isCurrentLayoutSlotUnFilled() All active Layout servers have been sealed but there is no client to take this forward and fill the slot by proposing a new layout.

Methods inherited from class java.lang.Object

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

Constructor Detail

PollReport

public PollReport()

Method Detail

getAllReachableNodes

public com.google.common.collect.ImmutableSet<String> getAllReachableNodes()

Returns all connected nodes to the current node including nodes with higher epoch.

Returns:

set of all reachable nodes

getReachableNodes

public Set<String> getReachableNodes()

Contains list of servers successfully connected with current node. It doesn't contain nodes answered with WrongEpochException.

getFailedNodes

public Set<String> getFailedNodes()

Contains list of servers disconnected from this node. If the node A can't ping node B then node B will be added to failedNodes list.

isCurrentLayoutSlotUnFilled

public boolean isCurrentLayoutSlotUnFilled()

All active Layout servers have been sealed but there is no client to take this forward and fill the slot by proposing a new layout. This is determined by the outOfPhaseEpochNodes map.

Returns:

True if latest layout slot is vacant.