org.apache.zookeeper.server.quorum
Class QuorumPeerMain

java.lang.Object
  org.apache.zookeeper.server.quorum.QuorumPeerMain

public class QuorumPeerMain
extends java.lang.Object

Configuration file

When the main() method of this class is used to start the program, the first argument is used as a path to the config file, which will be used to obtain configuration information. This file is a Properties file, so keys and values are separated by equals (=) and the key/value pairs are separated by new lines. The following is a general summary of keys used in the configuration file. For full details on this see the documentation in docs/index.html

1. dataDir - The directory where the ZooKeeper data is stored.
2. dataLogDir - The directory where the ZooKeeper transaction log is stored.
3. clientPort - The port used to communicate with clients.
4. tickTime - The duration of a tick in milliseconds. This is the basic unit of time in ZooKeeper.
5. initLimit - The maximum number of ticks that a follower will wait to initially synchronize with a leader.
6. syncLimit - The maximum number of ticks that a follower will wait for a message (including heartbeats) from the leader.
7. server.id - This is the host:port[:port] that the server with the given id will use for the quorum protocol.

In addition to the config file. There is a file in the data directory called "myid" that contains the server id as an ASCII decimal value.

Field Summary

protected QuorumPeer

quorumPeer

Constructor Summary

QuorumPeerMain()

Method Summary

protected void	initializeAndRun(java.lang.String[] args)
static void	main(java.lang.String[] args) To start the replicated server specify the configuration file name on the command line.
void	runFromConfig(QuorumPeerConfig config)

Methods inherited from class java.lang.Object

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

Field Detail

quorumPeer

protected QuorumPeer quorumPeer

Constructor Detail

QuorumPeerMain

public QuorumPeerMain()

Method Detail

main

public static void main(java.lang.String[] args)

To start the replicated server specify the configuration file name on the command line.

Parameters:

args - path to the configfile

initializeAndRun

protected void initializeAndRun(java.lang.String[] args)
                         throws QuorumPeerConfig.ConfigException,
                                java.io.IOException

Throws:

QuorumPeerConfig.ConfigException

java.io.IOException

runFromConfig

public void runFromConfig(QuorumPeerConfig config)
                   throws java.io.IOException

Throws:

java.io.IOException