explain bin/kafka-run-class.sh kafka.tools.ConsumerOffsetChecker --zookeeper localhost:2181 --group group1 -


can explain output of below command:

bin/kafka-run-class.sh kafka.tools.consumeroffsetchecker --zookeeper localhost:2181 --group group1

output:

group           topic                          pid offset          logsize         lag             owner group1          nil_rf2_p2                     0   2               2               0               group1_nilotpal-1469374217666-b7619d68-0 group1          nil_rf2_p2                     1   2               3               1               group1_nilotpal-1469374217666-b7619d68-0

i need explanation on each columns pid,offset,logsize,lag,owner.

i have 1 consumer running , following command, why 2 rows apperaing the above command.

bin/kafka-console-consumer.sh --zookeeper localhost:2181 --topic nil_rf2_p2  --consumer.config config/consumer1.properties  sarkar hello again!!

thanks in advance!!

the columns have following meaning:

  • pid: partition id
  • offset: latest committed offset partition corresponding consumer group
  • logsize: number of messages stored in partition
  • lag: number of not yet consumed message partition corresponding consumer group (ie, lag = logsize - offset)
  • owner: unique id of running consumer thread

furthermore, consumeroffestchecker shows row each topic partition. topic nil_rf2_p2 have 2 partitions.


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