apache-zookeeper

I have created a znode using: zookeeper-0:/opt/zookeeper/bin # ./zkCli.sh create /mynode content digest:user:pass:cdrwa How to access the znode using the zkCli.sh utility now? zookeeper-0:/opt/zookeeper/bin # ./zkCli.sh get /mynode Connecting to localhost:2181 WATCHER:: WatchedEvent state:SyncConnected type:None path:null Authentication is not valid : /mynode zookeeper-0:/opt/zookeeper/bin # The getAcl is showing the following: zookeeper-0:/opt/zookeeper/bin # ./zkCli.sh getAcl /mynode Connecting to localhost:2181 WATCHER:: WatchedEvent state:SyncConnected type:None path:null 'digest,'user

I followed the following instructions to set up a multi node kafka cluster. Now, how to connect to the zookeeper ? Is it okay to connect to just one zookeeper from the Producer/consumer side in JAVA or is there a way to connect all the zookeeper nodes ? Setting a multi node Apache ZooKeeper cluster On every node of the cluster add the following lines to the file kafka/config/zookeeper.properties server.1=zNode01:2888:3888 server.2=zNode02:2888:3888 server.3=zNode03:2888:3888 #add here more servers if you want initLimit=5 syncLimit=2 On every node of the cluster create a file called myid in the

I am using kafka as a message bus for Micro Service architecture, hence multiple services listen on a topic for a message. Therefore, the services are highly dependent on the topic to be live. But, there are many instances where I get leader not available , broker not available and leader= - 1 on the topics. Now, I am not sure if I can rely on the kafka topics, as services get interrupted when there are issues on the topics with cause issues in the platform. Can someone throw some light on the reliability and dependability on the topics and can we recover if we can across the above issues. I

I haven't been able to find anything that directly handled the problem I'm facing, so I'm posting here. I have JUnit/JBehave tests that spin up an embedded ZooKeeper server, embedded Kafka server, and kafka producers and consumers. After upgrading kafka from 0.7 to 0.8.1.1, I'm encountering the following types of errors: ERROR [kafka-request-handler-5] state.change.logger - Error on broker 1 while processing LeaderAndIsr request correlationId 7 received from controller 1 epoch 1 for partition [topicName,8] java.lang.NullPointerException: null at kafka.log.Log.<init>(Log.scala:60) ~[kafka_2.10

I am using a Java application which start a consumer reading Kafka topics. Every time I need to start the consumer application, I have to start the Zookeeper and Kafka servers with commands in cmd. Is it possible to start/stop them with small Java programs? Thank you. Please see this topic, it's about starting Zookeeper in Java: Best way to start zookeeper server from java program directing to this: Is it possible to start a zookeeper server instance in process, say for unit tests? If you need this for something like testing the I think that the better way is using the Debezium library which