分布式系统服务ZooKeeper的学习历程
####一.入门 ZooKeeper Overview
####二.O'Reilly.ZooKeeper.Distributed process coordination.2013笔记 按章节笔记
####三.深入 分布式一致性算法Paxos
分布式系统服务ZooKeeper的学习历程
分布式系统服务ZooKeeper的学习历程
####一.入门 ZooKeeper Overview
####二.O'Reilly.ZooKeeper.Distributed process coordination.2013笔记 按章节笔记
####三.深入 分布式一致性算法Paxos
org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode = NodeExists for /master
at org.apache.zookeeper.KeeperException.create(KeeperException.java:119)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:783)
at yangqi.zookeeper.example.masterworker.Master.createMaterNode(Master.java:64)
2016-01-08 20:58:20,385 [myid:] - INFO [pool-1-thread-2:ZooKeeper@684] - Session: 0x15215be52dc0005 closed
at yangqi.zookeeper.example.masterworker.Master.registerForMaster(Master.java:90)
2016-01-08 20:58:20,385 [myid:] - INFO [pool-1-thread-2-EventThread:ClientCnxn$EventThread@509] - EventThread shut down
at yangqi.zookeeper.example.masterworker.Master.run(Master.java:107)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /master
conf is not executed because it is not in the whitelist
When using ZooKeeper, the business logic attempts to store more than 1MB of data in a single znode. The default node data size limit for ZooKeeper is 1MB, exceeding this limit will cause the ZooKeeper server to close client connections.
Make the connection between the ZooKeeper server and the client normal
In the process of development, because of network delay, sometimes there will be no monitoring of znodes, how to avoid or optimize this situation?
在开发过程中,因网络延迟,有时候会没有监听到一些节点,如何避免或优化这种情况呢?
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