Zookeeper 具有 KeeperException 但 Kafka 能够创建主题并生产/消费 [英] Zookeeper having KeeperException but Kafka able to create topics and produce/consume
问题描述
我最近在单节点 CDH 5 设置上设置了 Kafka，目的是在移动到真正的集群之前在单节点上使用它.最初，我只是用 kafka 服务器启动了 zookeeper 服务器，一切都很好.我可以看到zookeeper在2181上运行，而Kafka在9092上运行.然后我创建了一个主题，启动了消费者和生产者，消费者可以看到生产者发送的消息.
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.
我脸上洋溢着幸福，移到带有动物园管理员日志的标签页，看到了:
With happiness on my face, I moved to the tab with zookeeper logs and saw this:
[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)
看起来 zookeeper 无法找到 的节点...东西.但是，如果是这样，为什么我的所有命令都有效?我能够创建一个主题，然后为它生成一些数据，同时订阅它的消费者也获取数据?
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?
如果有帮助，我的zookeeper版本是3.4.6，我的Kafka版本是0.8.2.1.哦，路径/tmp/zookeeper 存在.
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.
推荐答案
我遇到了同样的问题.
Exiting due to: org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /consumers/test-group/offsets/packets/0.
我解决了我的问题.
- 确保您的 zookeeper 和 kafka broker 正在运行.
- 是的，您可以创建主题，生产者/消费者将起作用.
- 要解决该错误，您必须拥有一个订阅了该主题的消费者组.
在您的情况下，它将是消费者组 test-consumer-group 并订阅主题 Test
In, your case it will be consumer with consumer-group test-consumer-group and subscribed to topic Test
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