Follower (Apache ZooKeeper - Server 3.9.3 API)

java.lang.Object
- org.apache.zookeeper.server.quorum.Learner
- - org.apache.zookeeper.server.quorum.Follower

```
public class Follower
extends Learner
```
This class has the control logic for the Follower.

Field Summary
- Fields inherited from class org.apache.zookeeper.server.quorum.Learner
  bufferedOutput, closeSocketAsync, leaderAddr, leaderIs, leaderOs, leaderProtocolVersion, LEARNER_ASYNC_SENDING, LEARNER_CLOSE_SOCKET_ASYNC, LOG, messageTracker, sock, sockBeingClosed

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected long`	`getLastQueued()`	The zxid of the last operation queued
`Iterable<Map<String,Object>>`	`getSyncedObserversInfo()`
`Integer`	`getSyncedObserverSize()`
`long`	`getZxid()`	The zxid of the last operation seen
`protected void`	`processPacket(QuorumPacket qp)`	Examine the packet received in qp and dispatch based on its contents.
`void`	`resetObserverConnectionStats()`
`void`	`shutdown()`	Shutdown the Peer
`String`	`toString()`

Methods inherited from class org.apache.zookeeper.server.quorum.Learner
connectToLeader, createSocket, findLeader, getAsyncSending, getPendingRevalidationsCount, getSocket, nanoTime, ping, registerWithLeader, revalidate, setAsyncSending, sockConnect, startSendingThread, syncWithLeader

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Method Detail
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - processPacket
```
protected void processPacket(QuorumPacket qp)
                      throws Exception
```
    Examine the packet received in qp and dispatch based on its contents.
    
    Parameters:
    
    qp -
    
    Throws:
    
    IOException
    
    Exception
  - getZxid
```
public long getZxid()
```
    The zxid of the last operation seen
    
    Returns:
    
    zxid
  - getLastQueued
```
protected long getLastQueued()
```
    The zxid of the last operation queued
    
    Returns:
    
    zxid
  - getSyncedObserverSize
```
public Integer getSyncedObserverSize()
```
  - getSyncedObserversInfo
```
public Iterable<Map<String,Object>> getSyncedObserversInfo()
```
  - resetObserverConnectionStats
```
public void resetObserverConnectionStats()
```
  - shutdown
```
public void shutdown()
```
    Description copied from class: Learner
    
    Shutdown the Peer
    
    Overrides:
    
    shutdown in class Learner