org.apache.kafka.common

Class TopicPartitionInfo

java.lang.Object

org.apache.kafka.common.TopicPartitionInfo

public class TopicPartitionInfo
extends Object

A class containing leadership, replicas and ISR information for a topic partition.

Constructor Summary

Constructors

Constructor and Description
TopicPartitionInfo(int partition, Node leader, List<Node> replicas, List<Node> isr)
TopicPartitionInfo(int partition, Node leader, List<Node> replicas, List<Node> isr, List<Node> elr, List<Node> lastKnownElr, List<Node> observers) Create an instance of this class with the provided parameters.

Method Summary

Modifier and Type	Method and Description
List<Node>	elr() Return the eligible leader replicas of the partition.
boolean	equals(Object o)
int	hashCode()
List<Node>	isr() Return the in-sync replicas of the partition.
List<Node>	lastKnownElr() Return the last known eligible leader replicas of the partition.
Node	leader() Return the leader of the partition or null if there is none.
List<Node>	observers() Return the observer replicas of the partition.
static TopicPartitionInfo	ofReplicasAndObservers(int partition, Node leader, List<Node> replicas, List<Node> observers, List<Node> isr)
int	partition() Return the partition id.
List<Node>	replicas() Return the replicas of the partition in the same order as the replica assignment.
String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

TopicPartitionInfo

public TopicPartitionInfo(int partition,
                          Node leader,
                          List<Node> replicas,
                          List<Node> isr,
                          List<Node> elr,
                          List<Node> lastKnownElr,
                          List<Node> observers)

Create an instance of this class with the provided parameters.

Parameters:

partition - the partition id

leader - the leader of the partition or Node.noNode() if there is none.

replicas - the replicas of the partition in the same order as the replica assignment (the preferred replica is the head of the list)

isr - the in-sync replicas

elr - the eligible leader replicas

lastKnownElr - the last known eligible leader replicas.

observers - The observer replicas.

TopicPartitionInfo

public TopicPartitionInfo(int partition,
                          Node leader,
                          List<Node> replicas,
                          List<Node> isr)

Method Detail

ofReplicasAndObservers

@Confluent
public static TopicPartitionInfo ofReplicasAndObservers(int partition,
                                                                   Node leader,
                                                                   List<Node> replicas,
                                                                   List<Node> observers,
                                                                   List<Node> isr)

partition

public int partition()

Return the partition id.

leader

public Node leader()

Return the leader of the partition or null if there is none.

replicas

public List<Node> replicas()

Return the replicas of the partition in the same order as the replica assignment. The preferred replica is the head of the list. Brokers with version lower than 0.11.0.0 return the replicas in unspecified order due to a bug.

observers

@Confluent
public List<Node> observers()

Return the observer replicas of the partition. Observers are not part of ISR and cannot be elected as leader.

isr

public List<Node> isr()

Return the in-sync replicas of the partition. Note that the ordering of the result is unspecified.

elr

public List<Node> elr()

Return the eligible leader replicas of the partition. Note that the ordering of the result is unspecified.

lastKnownElr

public List<Node> lastKnownElr()

Return the last known eligible leader replicas of the partition. Note that the ordering of the result is unspecified.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object