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From Spadoni Marco <Marco.Spad...@italiaonline.it>
Subject kafka-consumers-group.sh version 2.0.0 does not recognize --zookeeper option
Date Thu, 04 Oct 2018 16:31:08 GMT
Hi all,
I installed kafka_2.11-2.0.0 tarball on a CentOS server :
[kafka@oxelkk-bo-1:~] $ uname -a
Linux oxelkk-bo-1 3.10.0-862.11.6.el7.x86_64 #1 SMP Tue Aug 14 21:49:04 UTC 2018 x86_64 x86_64
x86_64 GNU/Linux
[kafka@oxelkk-bo-1:~] $

equipped with this JVM:
[kafka@oxelkk-bo-1:~] $ java -version
java version "1.8.0_77"
Java(TM) SE Runtime Environment (build 1.8.0_77-b03)
Java HotSpot(TM) 64-Bit Server VM (build 25.77-b03, mixed mode)
[kafka@oxelkk-bo-1:~] $

I have a strange behavior of the utility bin/kafka-consumer-groups.sh when it is called with
--zookeeper option, like:

[kafka@oxelkk-bo-1:~] $ /store1/elk/run/kafka_2.11-2.0.0/bin/kafka-consumer-groups.sh --zookeeper
oxelkk-bo-1.iol.local:2181 --list
Exception in thread "main" joptsimple.UnrecognizedOptionException: zookeeper is not a recognized
        at joptsimple.OptionException.unrecognizedOption(OptionException.java:108)
        at joptsimple.OptionParser.handleLongOptionToken(OptionParser.java:510)
        at joptsimple.OptionParserState$2.handleArgument(OptionParserState.java:56)
        at joptsimple.OptionParser.parse(OptionParser.java:396)
        at kafka.admin.ConsumerGroupCommand$ConsumerGroupCommandOptions.<init>(ConsumerGroupCommand.scala:725)
        at kafka.admin.ConsumerGroupCommand$.main(ConsumerGroupCommand.scala:42)
        at kafka.admin.ConsumerGroupCommand.main(ConsumerGroupCommand.scala)
[kafka@oxelkk-bo-1:~] $

Whilst if I use (just for a test) the same utility coming with kafka_2.11-, I have
the expected response (the groups are related to two Druid Tranquility tasks):

[kafka@oxelkk-bo-1:~] $ /store1/elk/run/kafka_2.11- --zookeeper
oxelkk-bo-1.iol.local:2181 --list
Note: This will only show information about consumers that use ZooKeeper (not those using
the Java consumer API).

[kafka@oxelkk-bo-1:~] $

I noticed that the documentation for Kafka 2.0.0 at: https://kafka.apache.org/documentation/#basic_ops_consumer_lag

This tool also works with ZooKeeper-based consumers:
bin/kafka-consumer-groups.sh --zookeeper localhost:2181 --describe --group my-group

Do you have any hint on this behavior?
Thank you very much,

Marco Spadoni
Italiaonline S.p.A.

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