kazoo

kazoo 介绍 zookeeper的开发接口以前主要以java和c为主，随着python项目越来越多的使用zookeeper作为分布式集群实现，python的zookeeper接口也出现了很多，现在主流的纯python的zookeeper接口是kazoo。因此如何使用kazoo开发基于python的分布式程序是必须掌握的。 安装kazoo pip3 install kazoo 基本操作 from kazoo.client import KazooClient zk = KazooClient(hosts='192.168.91.128:2181') #如果是本地那就写127.0.0.1 zk.start() #与zookeeper连接 zk.stop() #与zookeeper断开 创建节点 from kazoo.client import KazooClient zk = KazooClient(hosts='192.168.91.128:2181') #如果是本地那就写127.0.0.1 zk.start() #与zookeeper连接 #makepath=True是递归创建,如果不加上中间那一段，就是建立一个空的节点 zk.create('/abc/JQK/XYZ/0001',b'this is my house',makepath=True) node = zk.get

This is the code mentioned on kazoo readthedocs election=zk.Election("/electionpath", "my-identifier") what are the input arguments to be passed to make particular node as leader? (i.e what does /electionpath and my-identifier refers here?) In Short: "/electionpath" is your path of interest where you will be creating nodes, adding data and watching nodes using dataWatchers. "my-identifier" is identifier to the non re-entrant lock which will be used to verify who is the leader out of the contenders and allow writes only to leader. In Detail: To simplify it explaining first why there should be

I recently started working with Python and I am trying to concatenate one of my JSON String with existing JSON String. I am also working with Zookeeper so I get the existing json string from zookeeper node as I am using Python kazoo library. # gets the data from zookeeper data, stat = zk.get(some_znode_path) jsonStringA = data.decode("utf-8") if I print jsonStringA it gives me like this - {"error_1395946244342":"valueA","error_1395952003":"valueB"} But if I do print json.loads(jsonString) then it prints out like this - {u'error_1395946244342': u'valueA', u'error_1395952003': u'valueB'} Here