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Jonathan Rafalski commented on KAFKA-1615: ------------------------------------------ Thanks! I just updated the RB to try to clear things up. Let me know if you have questions on anything else. > Generating group ID in ZookeeperConsumerConnector shouldn't require local > hostname to resolve > --------------------------------------------------------------------------------------------- > > Key: KAFKA-1615 > URL: https://issues.apache.org/jira/browse/KAFKA-1615 > Project: Kafka > Issue Type: Bug > Affects Versions: 0.8.1.1 > Reporter: Gwen Shapira > Assignee: Gwen Shapira > Priority: Minor > Labels: newbie, usability > Attachments: KAFKA-1615.patch > > > ZookeeperConsumerConnector generates group ID by taking the local hostname: > consumerUuid = "%s-%d-%s".format( > InetAddress.getLocalHost.getHostName, System.currentTimeMillis, > uuid.getMostSignificantBits().toHexString.substring(0,8)) > If localhost doesn't resolve (something that happens occasionally), this will > fail with following error: > Exception in thread "main" java.net.UnknownHostException: Billc-cent70x64: > Billc-cent70x64: Name or service not known > at java.net.InetAddress.getLocalHost(InetAddress.java:1473) > at > kafka.consumer.ZookeeperConsumerConnector.<init>(ZookeeperConsumerConnector.scala:119) > at > kafka.consumer.ZookeeperConsumerConnector.<init>(ZookeeperConsumerConnector.scala:142) > at kafka.consumer.Consumer$.create(ConsumerConnector.scala:89) > at kafka.tools.ConsoleConsumer$.main(ConsoleConsumer.scala:149) > at kafka.tools.ConsoleConsumer.main(ConsoleConsumer.scala) > Caused by: java.net.UnknownHostException: Billc-cent70x64: Name or service > not known > at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) > at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:901) > at > java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1293) > at java.net.InetAddress.getLocalHost(InetAddress.java:1469) > ... 5 more > Normally requiring a resolving localhost is not a problem, but here is seems > a bit frivolous - its just for generating an ID, nothing network related. > I think we can catch the exception and generate an ID without the hostname. > This is low priority since the issue can be easily worked around (add the > hostname to /etc/hosts) and since this API is going away anyway with the new > consumer API. -- This message was sent by Atlassian JIRA (v6.3.4#6332)