kafka.common.ConsumerRebalanceFailedException异常解决

kafka.common.ConsumerRebalanceFailedException: group_dd-1446432618163-2746a209 can't rebalance after 10 retries
  at kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener.syncedRebalance(ZookeeperConsumerConnector.scala:432)
  at kafka.consumer.ZookeeperConsumerConnector.kafka$consumer$ZookeeperConsumerConnector$$reinitializeConsumer(ZookeeperConsumerConnector.scala:722)
  at kafka.consumer.ZookeeperConsumerConnector.consume(ZookeeperConsumerConnector.scala:212)
  at kafka.javaapi.consumer.ZookeeperConsumerConnector.createMessageStreams(ZookeeperConsumerConnector.scala:80)
  at kafka.javaapi.consumer.ZookeeperConsumerConnector.createMessageStreams(ZookeeperConsumerConnector.scala:92)
  at com.symboltech.mine.ConsumerUtil.start(ConsumerUtil.java:40)
  at com.symboltech.mine.KafkaConsumer.sdf(KafkaConsumer.java:58)

解决办法：
1.配置zk问题(kafka的consumer配置)
zookeeper.session.timeout.ms=5000
zookeeper.connection.timeout.ms=10000
rebalance.backoff.ms=2000
rebalance.max.retries=10

官方解释：
consumer rebalancing fails (you will see ConsumerRebalanceFailedException): This is due to conflicts when two consumers are trying to own the same topic partition. The log will show you what caused the conflict (search for "conflict in ").
If your consumer subscribes to many topics and your ZK server is busy, this could be caused by consumers not having enough time to see a consistent view of all consumers in the same group. If this is the case, try Increasing rebalance.max.retries and rebalance.backoff.ms.
Another reason could be that one of the consumers is hard killed. Other consumers during rebalancing won't realize that consumer is gone after zookeeper.session.timeout.ms time. In the case, make sure that rebalance.max.retries * rebalance.backoff.ms > zookeeper.session.timeout.ms.