Druid经纪人击中UnresolvedAddressException [英] UnresolvedAddressException being hit by Druid broker

问题描述

我是德鲁伊的新手.我已经使用即兴IAP程序包设置了集群.事件已使用宁静从卡夫卡吸收到Druid中.我可以看到该事件已被Tranquility接受-以下日志语句是我用来验证的内容:

I'm new to Druid. I've set up a cluster using the Imply IAP package. Events are being ingested into Druid from Kafka using Tranquility. I can see that the events are being accepted by Tranquility - the following log statements are what I used to verify that:

2016-10-03 19:19:22,715 [KafkaConsumer-CommitThread] INFO  c.m.tranquility.kafka.KafkaConsumer - Flushed {conn_recs={receivedCount=1, sentCount=1, droppedCount=0, unparseableCount=0}} pending messages in 32056ms and committed offsets in 15ms.

但是，当我尝试在数据源上运行timeBoundary查询时，代理似乎正在遇到异常.

However, the broker seems to be hitting an exception when I try running a timeBoundary query on the datasource.

以下是异常堆栈跟踪(从代理的日志中复制):

Following is the exception stack trace (copied from the broker's log):

java.nio.channels.UnresolvedAddressException
  at sun.nio.ch.Net.checkAddress(Net.java:101) ~[?:1.8.0_66]
  at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:622) ~[?:1.8.0_66]
  at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.connect(NioClientSocketPipelineSink.java:108) [netty-3.10.4.Final.jar:?]
  at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.eventSunk(NioClientSocketPipelineSink.java:70) [netty-3.10.4.Final.jar:?]
  at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendDownstream(DefaultChannelPipeline.java:779) [netty-3.10.4.Final.jar:?]
  at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:54) [netty-3.10.4.Final.jar:?]

由于无法确定需要进一步调试的日志/进程，我已经停留了一段时间.

I've been stuck at this point for while since I'm not sure which logs/processes I need to look into to further debug this.

问题:有人可以解释一下我该如何调试此类问题-即需要查看的任何特定日志，等等?

Question: Could someone explain how I need to go about debugging such an issue - ie, any specific logs I need to look at, etc.?

顺便说一句，我正在使用一个单独的3节点Zookeeper集群和一个单节点mysql实例作为druid集群的外部依赖项.

Btw, I'm using a separate 3-node zookeeper cluster and a single node mysql instance as external dependencies for the druid cluster.

如果需要提供更多信息，请告诉我.

Please let me know if I need to provide more information.

谢谢，Jithin

推荐答案

1. 宁静归于动物园管理员，并获得了霸主的DNS名称.
2. 宁静尝试连接到霸主，然后您收到UnresolvedAddressException.

您需要设置DNS或执行某些操作才能通过主机名解析IP地址.

You need to setup DNS or to do something to be able to resolve IP address by hostname.

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