java.io.IOException:通过 kafka.utils.NetworkClientBlockingOps$.awaitReady 端口 6667 连接到 kafka 失败

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问题描述

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我们有 3 台 kafka 机器和 3 台 zookper 机器

We have 3 kafka machines and 3 zookper machines

kafka机器和zookeper机器分开，所有机器都是OS-redhat 7.x

kafka machines are separated from the zookeper machines , and all machines are with OS - redhat 7.x

在/var/log/kafka下我们可以看到如下，java.io.IOException显示在server.log中>

under /var/log/kafka we can see the following , java.io.IOException that displayed in server.log

               at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:63)
[2018-10-07 07:42:13,342] WARN [ReplicaFetcherThread-0-1007], Error in fetch kafka.server.ReplicaFetcherThread$FetchRequest@407ac4e4 (kafka.server.ReplicaFetcherThread)
java.io.IOException: Connection to kafka03.hfge:6667 (id: 1007 rack: null) failed
               at kafka.utils.NetworkClientBlockingOps$.awaitReady$1(NetworkClientBlockingOps.scala:83)
               at kafka.utils.NetworkClientBlockingOps$.blockingReady$extension(NetworkClientBlockingOps.scala:93)
               at kafka.server.ReplicaFetcherThread.sendRequest(ReplicaFetcherThread.scala:248)
               at kafka.server.ReplicaFetcherThread.fetch(ReplicaFetcherThread.scala:238)
               at kafka.server.ReplicaFetcherThread.fetch(ReplicaFetcherThread.scala:42)
               at kafka.server.AbstractFetcherThread.processFetchRequest(AbstractFetcherThread.scala:118)
               at kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:103)
               at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:63)
[2018-10-07 07:42:13,551] WARN [ReplicaFetcherThread-0-1002], Error in fetch kafka.server.ReplicaFetcherThread$FetchRequest@2f9f8ecd (kafka.server.ReplicaFetcherThread)
java.io.IOException: Connection to kafka07.hfge:6667 (id: 1002 rack: null) failed
               at kafka.utils.NetworkClientBlockingOps$.awaitReady$1(NetworkClientBlockingOps.scala:83)
               at kafka.utils.NetworkClientBlockingOps$.blockingReady$extension(NetworkClientBlockingOps.scala:93)
               at kafka.server.ReplicaFetcherThread.sendRequest(ReplicaFetcherThread.scala:248)
               at kafka.server.ReplicaFetcherThread.fetch(ReplicaFetcherThread.scala:238)
               at kafka.server.ReplicaFetcherThread.fetch(ReplicaFetcherThread.scala:42)
               at kafka.server.AbstractFetcherThread.processFetchRequest(AbstractFetcherThread.scala:118)
               at kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:103)
               at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:63)
[2018-10-07 07:42:15,343] WARN [ReplicaFetcherThread-0-1007], Error in fetch kafka.server.ReplicaFetcherThread$FetchRequest@4dafd0d9 (kafka.server.ReplicaFetcherThread)
java.io.IOException: Connection to kafka03.hfge:6667 (id: 1007 rack: null) failed
               at kafka.utils.NetworkClientBlockingOps$.awaitReady$1(NetworkClientBlockingOps.scala:83)
               at kafka.utils.NetworkClientBlockingOps$.blockingReady$extension(NetworkClientBlockingOps.scala:93)
               at kafka.server.ReplicaFetcherThread.sendRequest(ReplicaFetcherThread.scala:248)
               at kafka.server.ReplicaFetcherThread.fetch(ReplicaFetcherThread.scala:238)
               at kafka.server.ReplicaFetcherThread.fetch(ReplicaFetcherThread.scala:42)
               at kafka.server.AbstractFetcherThread.processFetchRequest(AbstractFetcherThread.scala:118)
               at kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:103)
               at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:63)
[2018-10-07 07:42:15,552] WARN [ReplicaFetcherThread-0-1002], Error in fetch kafka.server.ReplicaFetcherThread$FetchRequest@5ce51081 (kafka.server.ReplicaFetcherThread)
java.io.IOException: Connection to kafka07.hfge:6667 (id: 1002 rack: null) failed

除此之外，我们还有一个问题，就是 kafka 在一段时间后与 zookeeper 断开连接，这意味着broker id从zookeeper中删除(来自zoo session/brokers/ids)

additional with this , we also have a problem that kafka disconnected from the zookeeper after some time , this means that the broker id deleted from the zookeeper ( from zoo session /brokers/ids )

cd /usr/hdp/current/zookeeper-server/bin

./zkCli.sh

ls /brokers/ids

知道如何找到原因

java.io.IOException: Connection to kafka03.hfge:6667

推荐答案

当 inter.broker.protocol.version 未正确更新时会出现此问题.要解决此问题，请更新inter.broker.protocol.version 并按照文档.

This issue occurs when the inter.broker.protocol.version is not updated correctly. To resolve this issue, update the inter.broker.protocol.version and restart the brokers one by one as described in the Documentation.

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