Package org.elasticsearch.cluster.coordination

Class LeaderChecker

java.lang.Object

org.elasticsearch.cluster.coordination.LeaderChecker

public class LeaderChecker
extends Object

The LeaderChecker is responsible for allowing followers to check that the currently elected leader is still connected and healthy. We are fairly lenient, possibly allowing multiple checks to fail before considering the leader to be faulty, to allow for the leader to temporarily stand down on occasion, e.g. if it needs to move to a higher term. On deciding that the leader has failed a follower will become a candidate and attempt to become a leader itself.

Field Summary

Fields

Modifier and Type	Field	Description
static final Setting<org.elasticsearch.core.TimeValue>	LEADER_CHECK_INTERVAL_SETTING
static final Setting<Integer>	LEADER_CHECK_RETRY_COUNT_SETTING
static final Setting<org.elasticsearch.core.TimeValue>	LEADER_CHECK_TIMEOUT_SETTING

Method Summary

Modifier and Type	Method	Description
DiscoveryNode	leader()

Methods inherited from class java.lang.Object

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

Field Details

LEADER_CHECK_INTERVAL_SETTING

public static final Setting<org.elasticsearch.core.TimeValue> LEADER_CHECK_INTERVAL_SETTING

LEADER_CHECK_TIMEOUT_SETTING

public static final Setting<org.elasticsearch.core.TimeValue> LEADER_CHECK_TIMEOUT_SETTING

LEADER_CHECK_RETRY_COUNT_SETTING

public static final Setting<Integer> LEADER_CHECK_RETRY_COUNT_SETTING

Method Details

leader

public DiscoveryNode leader()