title: Zookeeper having KeeperException but Kafka able to create topics and produce/consume
body: <p>I recently setup Kafka on a single node CDH 5 setup with the aim of playing with it on a single node before moving to a real cluster. Initially, I just started the zookeeper server, with the kafka server and it was all fine. I could see that zookeeper was running on 2181 while Kafka was running on 9092. I then created a topic, and started the consumer and the producer and the consumer could see the messages the producer was sending. </p>
  
  <p>With happiness on my face, I moved to the tab with zookeeper logs and saw this: </p>
  
  <pre><code>[2015-05-27 16:46:07,016] INFO Got user-level KeeperException when processing sessionid:0x14d97bf0a020002 type:create cxid:0x2 zxid:0x1f txntype:-1 reqpath:n/a Error Path:/consumers/test-consumer-group/ids Error:KeeperErrorCode = NoNode for /consumers/test-consumer-group/ids (org.apache.zookeeper.server.PrepRequestProcessor)
  [2015-05-27 16:46:07,021] INFO Got user-level KeeperException when processing sessionid:0x14d97bf0a020002 type:create cxid:0x3 zxid:0x20 txntype:-1 reqpath:n/a Error Path:/consumers/test-consumer-group Error:KeeperErrorCode = NoNode for /consumers/test-consumer-group (org.apache.zookeeper.server.PrepRequestProcessor)
  [2015-05-27 16:46:07,306] INFO Got user-level KeeperException when processing sessionid:0x14d97bf0a020002 type:create cxid:0x19 zxid:0x24 txntype:-1 reqpath:n/a Error Path:/consumers/test-consumer-group/owners/test Error:KeeperErrorCode = NoNode for /consumers/test-consumer-group/owners/test (org.apache.zookeeper.server.PrepRequestProcessor)
  [2015-05-27 16:46:07,307] INFO Got user-level KeeperException when processing sessionid:0x14d97bf0a020002 type:create cxid:0x1a zxid:0x25 txntype:-1 reqpath:n/a Error Path:/consumers/test-consumer-group/owners Error:KeeperErrorCode = NoNode for /consumers/test-consumer-group/owners (org.apache.zookeeper.server.PrepRequestProcessor)
  [2015-05-27 16:47:06,961] INFO Got user-level KeeperException when processing sessionid:0x14d97bf0a020002 type:setData cxid:0x24 zxid:0x29 txntype:-1 reqpath:n/a Error Path:/consumers/test-consumer-group/offsets/test/0 Error:KeeperErrorCode = NoNode for /consumers/test-consumer-group/offsets/test/0 (org.apache.zookeeper.server.PrepRequestProcessor)
  [2015-05-27 16:47:06,963] INFO Got user-level KeeperException when processing sessionid:0x14d97bf0a020002 type:create cxid:0x25 zxid:0x2a txntype:-1 reqpath:n/a Error Path:/consumers/test-consumer-group/offsets Error:KeeperErrorCode = NoNode for /consumers/test-consumer-group/offsets (org.apache.zookeeper.server.PrepRequestProcessor)
  </code></pre>
  
  <p>It looks like zookeeper is not able to find a node for . . . stuff. But, if that's the case, why do all my commands work? I am able to create a topic, and then produce some data for it while the consumer subscribed to it gets the data too? </p>
  
  <p>If it helps, my zookeeper version is 3.4.6 and my Kafka version is 0.8.2.1. And oh, the path /tmp/zookeeper exists. </p>