https://community.cloudera.com/t5/Support-Questions/How-configure-kafka-and-zookeeper-for-production/m-p/141575#M104172 <P>That is not an error message, it's INFO. ZooKeeper is just telling you that a client tried to create the node /brokers/ids but it already existed in ZooKeeper (you cannot create a node that already exists).</P><P>Not sure why you can't see the Kafka messages though.</P> Fri, 22 Jul 2016 00:44:53 GMT elserj 2016-07-22T00:44:53Z https://community.cloudera.com/t5/Support-Questions/How-configure-kafka-and-zookeeper-for-production/m-p/141574#M104171 <P>Hi, i need help in kafka installation for HDF : when i start the broker i faced this error(screenshot) in zookeeper logs and i can't see messages sent by the the producer when i launch consumer console. thank's to help me.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="5971-g8n8o.png" style="width: 1046px;"><img src="https://community.cloudera.com/t5/image/serverpage/image-id/21717iFF0DFF9B92C8DB90/image-size/medium?v=v2&amp;px=400" role="button" title="5971-g8n8o.png" alt="5971-g8n8o.png" /></span></P> Mon, 19 Aug 2019 08:13:59 GMT https://community.cloudera.com/t5/Support-Questions/How-configure-kafka-and-zookeeper-for-production/m-p/141574#M104171 radhwendhouafli 2019-08-19T08:13:59Z https://community.cloudera.com/t5/Support-Questions/How-configure-kafka-and-zookeeper-for-production/m-p/141575#M104172 <P>That is not an error message, it's INFO. ZooKeeper is just telling you that a client tried to create the node /brokers/ids but it already existed in ZooKeeper (you cannot create a node that already exists).</P><P>Not sure why you can't see the Kafka messages though.</P> Fri, 22 Jul 2016 00:44:53 GMT https://community.cloudera.com/t5/Support-Questions/How-configure-kafka-and-zookeeper-for-production/m-p/141575#M104172 elserj 2016-07-22T00:44:53Z