Re: Exception in thread "main" java.lang.UnsupportedOperationException: empty.head

2014-05-28 Thread Jun Rao
Any error from the controller/state-change log? Thanks, Jun On Wed, May 28, 2014 at 1:50 AM, Hemath Kumar wrote: > even if i specify the topic its showing the same error. > > /opt/kafka_2.10-0.8.1.1/bin/kafka-run-class.sh > kafka.tools.ConsumerOffsetChecker -zkconnect localhost:2181 --group >

Re: Exception in thread "main" java.lang.UnsupportedOperationException: empty.head

2014-05-28 Thread Hemath Kumar
even if i specify the topic its showing the same error. /opt/kafka_2.10-0.8.1.1/bin/kafka-run-class.sh kafka.tools.ConsumerOffsetChecker -zkconnect localhost:2181 --group group_name --topic testtopic On Wed, May 28, 2014 at 10:42 AM, Guozhang Wang wrote: > Hemath, > > I will need more info to

Re: Exception in thread "main" java.lang.UnsupportedOperationException: empty.head

2014-05-27 Thread Guozhang Wang
Hemath, I will need more info to check the reasons kafka stopped working. For consumer offset checker tool, you need to specify the topic names, otherwise you will see "empty.head". Guozhang On Tue, May 27, 2014 at 9:53 PM, Hemath Kumar wrote: > This is the command i have used. > > ./kafka-ru

Re: Exception in thread "main" java.lang.UnsupportedOperationException: empty.head

2014-05-27 Thread Hemath Kumar
This is the command i have used. ./kafka-run-class.sh kafka.tools.ConsumerOffsetChecker --zkconnect localhost:2181 --group consumer_group Not just only error with this command. when this sitution occured messages are not able to produce and consumer any more. On Tue, May 27, 2014 at 9:22 PM,

Re: Exception in thread "main" java.lang.UnsupportedOperationException: empty.head

2014-05-27 Thread Guozhang Wang
Hi, Could you print the full command line you used consumer offset checker tool? Guozhang On Tue, May 27, 2014 at 12:46 AM, Hemath Kumar wrote: > Every time when i reboot my machine kafka is not working. when i check the > consumeroffset tool i am getting this error. I am new to this i could