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From Sa Li <sal...@gmail.com>
Subject Re: Number of Consumers Connected
Date Tue, 20 Jan 2015 17:46:19 GMT
Guozhang

Thank you very much for reply, here I print out the
kafka-console-consumer.sh help,

root@voluminous-mass:/srv/kafka# bin/kafka-console-consumer.sh
Missing required argument "[zookeeper]"
Option                                  Description
------                                  -----------
--autocommit.interval.ms <Integer: ms>  The time interval at which to save
the
                                          current offset in ms (default:
60000)
--blacklist <blacklist>                 Blacklist of topics to exclude from
                                          consumption.
--consumer-timeout-ms <Integer: prop>   consumer throws timeout exception
                                          after waiting this much of time
                                          without incoming messages
(default:
                                          -1)
--csv-reporter-enabled                  If set, the CSV metrics reporter
will
                                          be enabled
--fetch-size <Integer: size>            The amount of data to fetch in a
                                          single request. (default: 1048576)
--formatter <class>                     The name of a class to use for
                                          formatting kafka messages for
                                          display. (default: kafka.consumer.
                                          DefaultMessageFormatter)
--from-beginning                        If the consumer does not already
have
                                          an established offset to consume
                                          from, start with the earliest
                                          message present in the log rather
                                          than the latest message.
--group <gid>                           The group id to consume on.
(default:
                                          console-consumer-85664)
--max-messages <Integer: num_messages>  The maximum number of messages to
                                          consume before exiting. If not
set,
                                          consumption is continual.
--max-wait-ms <Integer: ms>             The max amount of time each fetch
                                          request waits. (default: 100)
--metrics-dir <metrics dictory>         If csv-reporter-enable is set, and
                                          this parameter isset, the csv
                                          metrics will be outputed here
--min-fetch-bytes <Integer: bytes>      The min number of bytes each fetch
                                          request waits for. (default: 1)
--property <prop>
--refresh-leader-backoff-ms <Integer:   Backoff time before refreshing
  ms>                                     metadata (default: 200)
--skip-message-on-error                 If there is an error when
processing a
                                          message, skip it instead of halt.
--socket-buffer-size <Integer: size>    The size of the tcp RECV size.
                                          (default: 2097152)
--socket-timeout-ms <Integer: ms>       The socket timeout used for the
                                          connection to the broker (default:
                                          30000)
--topic <topic>                         The topic id to consume on.
--whitelist <whitelist>                 Whitelist of topics to include for
                                          consumption.
--zookeeper <urls>                      REQUIRED: The connection string for
                                          the zookeeper connection in the
form
                                          host:port. Multiple URLS can be
                                          given to allow fail-over.

--property option is not provided the description, is there an example how
to use it?

thanks

AL

On Mon, Jan 19, 2015 at 6:30 PM, Guozhang Wang <wangguoz@gmail.com> wrote:

> There is a property config you can set via bin/kafka-console-consumer.sh to
> commit offsets to ZK, you can use bin/kafka-console-consumer.sh --help to
> list all the properties.
>
> Guozhang
>
> On Mon, Jan 19, 2015 at 5:15 PM, Sa Li <salicn@gmail.com> wrote:
>
> > Guozhang,
> >
> > Currently we are in the stage to testing producer, our C# producer
> sending
> > data to brokers, and use
> >
> > bin/kafka-run-class.sh org.apache.kafka.clients.tools.ProducerPerformance
> > command to produce the messages. We don't have a coded consumer to commit
> > offset, we use
> > bin/kafka-console-consumer.sh --zookeeper command to consume, is there a
> > command that we can use on command line to create zk path?
> >
> > thanks
> >
> > AL
> >
> > On Mon, Jan 19, 2015 at 4:14 PM, Guozhang Wang <wangguoz@gmail.com>
> wrote:
> >
> > > Sa,
> > >
> > > Did your consumer ever commit offsets to Kafka? If not then no
> > > corresponding ZK path will be created.
> > >
> > > Guozhang
> > >
> > > On Mon, Jan 19, 2015 at 3:58 PM, Sa Li <salicn@gmail.com> wrote:
> > >
> > > > Hi,
> > > >
> > > > I use such tool
> > > >
> > > > Consumer Offset Checker
> > > >
> > > > Displays the:  Consumer Group, Topic, Partitions, Offset, logSize,
> Lag,
> > > > Owner for the specified set of Topics and Consumer Group
> > > > bin/kafka-run-class.sh kafka.tools.ConsumerOffsetChecker
> > > >
> > > > To be able to know the consumer group, in zkCli.sh
> > > >
> > > > [zk: localhost:2181(CONNECTED) 3] ls /
> > > > [transactional, admin, zookeeper, consumers, config, controller,
> storm,
> > > > brokers, controller_epoch]
> > > > [zk: localhost:2181(CONNECTED) 4] ls /consumers
> > > > [web-console-consumer-99295, web-console-consumer-37853,
> > > > web-console-consumer-30841, perf-consumer-92283, perf-consumer-21631,
> > > > perf-consumer-95281, perf-consumer-59296, web-console-consumer-52126,
> > > > web-console-consumer-89137, perf-consumer-72484, perf-consumer-80363,
> > > > web-console-consumer-47543, web-console-consumer-22509,
> > > > perf-consumer-16954, perf-consumer-53957, perf-consumer-39448,
> > > > web-console-consumer-17021, perf-consumer-88693,
> > > > web-console-consumer-48744, web-console-consumer-82543,
> > > > perf-consumer-89565, web-console-consumer-97959, perf-consumer-40427,
> > > > web-console-consumer-95350, web-console-consumer-26473,
> > > > web-console-consumer-79384, web-console-consumer-87777,
> > > > perf-consumer-91681, web-console-consumer-36136,
> > > > web-console-consumer-86924, perf-consumer-24510, perf-consumer-5888,
> > > > perf-consumer-73534, perf-consumer-92985, perf-consumer-7675,
> > > > perf-consumer-52306, perf-consumer-87352, web-console-consumer-30400]
> > > > [zk: localhost:2181(CONNECTED) 5]
> > > >
> > > > I then run
> > > >
> > > > root@exemplary-birds:/srv/kafka# bin/kafka-run-class.sh
> > > > kafka.tools.ConsumerOffsetChecker --topic PofApiTest-1 --group
> > > > web-console-consumer-48744
> > > > Group           Topic                          Pid Offset
> > > > logSize         Lag             Owner
> > > > Exception in thread "main"
> > > org.I0Itec.zkclient.exception.ZkNoNodeException:
> > > > org.apache.zookeeper.KeeperException$NoNodeException:
> KeeperErrorCode =
> > > > NoNode for
> /consumers/web-console-consumer-48744/offsets/PofApiTest-1/0
> > > >         at
> > > > org.I0Itec.zkclient.exception.ZkException.create(ZkException.java:47)
> > > >         at
> > > > org.I0Itec.zkclient.ZkClient.retryUntilConnected(ZkClient.java:685)
> > > >         at org.I0Itec.zkclient.ZkClient.readData(ZkClient.java:766)
> > > >         at org.I0Itec.zkclient.ZkClient.readData(ZkClient.java:761)
> > > >         at kafka.utils.ZkUtils$.readData(ZkUtils.scala:461)
> > > >         at
> > > >
> > > >
> > >
> >
> kafka.tools.ConsumerOffsetChecker$.kafka$tools$ConsumerOffsetChecker$$processPartition(ConsumerOffsetChecker.scala:59)
> > > >         at
> > > >
> > > >
> > >
> >
> kafka.tools.ConsumerOffsetChecker$$anonfun$kafka$tools$ConsumerOffsetChecker$$processTopic$1.apply$mcVI$sp(ConsumerOffsetChecker.scala:89)
> > > >         at
> > > >
> > > >
> > >
> >
> kafka.tools.ConsumerOffsetChecker$$anonfun$kafka$tools$ConsumerOffsetChecker$$processTopic$1.apply(ConsumerOffsetChecker.scala:89)
> > > >         at
> > > >
> > > >
> > >
> >
> kafka.tools.ConsumerOffsetChecker$$anonfun$kafka$tools$ConsumerOffsetChecker$$processTopic$1.apply(ConsumerOffsetChecker.scala:89)
> > > >         at
> > > >
> > > >
> > >
> >
> scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
> > > >         at
> > > > scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
> > > >         at
> > > >
> > > >
> > >
> >
> kafka.tools.ConsumerOffsetChecker$.kafka$tools$ConsumerOffsetChecker$$processTopic(ConsumerOffsetChecker.scala:88)
> > > >         at
> > > >
> > > >
> > >
> >
> kafka.tools.ConsumerOffsetChecker$$anonfun$main$3.apply(ConsumerOffsetChecker.scala:153)
> > > >         at
> > > >
> > > >
> > >
> >
> kafka.tools.ConsumerOffsetChecker$$anonfun$main$3.apply(ConsumerOffsetChecker.scala:153)
> > > >         at scala.collection.immutable.List.foreach(List.scala:318)
> > > >         at
> > > >
> > kafka.tools.ConsumerOffsetChecker$.main(ConsumerOffsetChecker.scala:152)
> > > >         at
> > > > kafka.tools.ConsumerOffsetChecker.main(ConsumerOffsetChecker.scala)
> > > > Caused by: org.apache.zookeeper.KeeperException$NoNodeException:
> > > > KeeperErrorCode = NoNode for
> > > > /consumers/web-console-consumer-48744/offsets/PofApiTest-1/0
> > > >         at
> > > > org.apache.zookeeper.KeeperException.create(KeeperException.java:102)
> > > >         at
> > > > org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
> > > >         at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:927)
> > > >         at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:956)
> > > >         at
> > > org.I0Itec.zkclient.ZkConnection.readData(ZkConnection.java:103)
> > > >         at org.I0Itec.zkclient.ZkClient$9.call(ZkClient.java:770)
> > > >         at org.I0Itec.zkclient.ZkClient$9.call(ZkClient.java:766)
> > > >         at
> > > > org.I0Itec.zkclient.ZkClient.retryUntilConnected(ZkClient.java:675)
> > > >         ... 15 more
> > > >
> > > > So consumer groups make confusing, I didn't specify the
> > consumer-group-id
> > > > in producer, the only place I know to config group is
> > consumer.properties
> > > >
> > > >
> > > > #consumer group id
> > > > group.id=test-consumer-group
> > > >
> > > >
> > > > Any hints? Thanks
> > > >
> > > >
> > > > AL
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > On Mon, Dec 15, 2014 at 6:46 PM, nitin sharma <
> > > kumarsharma.nitin@gmail.com
> > > > >
> > > > wrote:
> > > >
> > > > > got it ... thanks a lot.
> > > > >
> > > > > Regards,
> > > > > Nitin Kumar Sharma.
> > > > >
> > > > >
> > > > > On Mon, Dec 15, 2014 at 9:26 PM, Gwen Shapira <
> gshapira@cloudera.com
> > >
> > > > > wrote:
> > > > > >
> > > > > > Hi Nitin,
> > > > > >
> > > > > > Go to where you installed zookeeper and run:
> > > > > >
> > > > > > bin/zkCli.sh -server 127.0.0.1:2181
> > > > > >
> > > > > > On Mon, Dec 15, 2014 at 6:09 PM, nitin sharma
> > > > > > <kumarsharma.nitin@gmail.com> wrote:
> > > > > > > Thanks Neha and Gwen for your responses..
> > > > > > >
> > > > > > > @Gwen -- Kindly explain how to perform the steps you have
> > > mentioned.
> > > > > how
> > > > > > > should i connect to a zookeeper..?
> > > > > > >
> > > > > > > Regards,
> > > > > > > Nitin Kumar Sharma.
> > > > > > >
> > > > > > >
> > > > > > > On Mon, Dec 15, 2014 at 6:36 PM, Neha Narkhede <
> > neha@confluent.io>
> > > > > > wrote:
> > > > > > >>
> > > > > > >> In addition to Gwen's suggestion, we actually don't
have jmx
> > > metrics
> > > > > > that
> > > > > > >> give you a list of actively consuming processes.
> > > > > > >>
> > > > > > >> On Mon, Dec 15, 2014 at 12:59 PM, Gwen Shapira <
> > > > gshapira@cloudera.com
> > > > > >
> > > > > > >> wrote:
> > > > > > >> >
> > > > > > >> > Currently you can find the number of consumer
groups through
> > > > > > ZooKeeper:
> > > > > > >> >
> > > > > > >> > connect to ZK and run
> > > > > > >> > ls /consumers
> > > > > > >> >
> > > > > > >> > and count the number of results
> > > > > > >> >
> > > > > > >> > On Mon, Dec 15, 2014 at 11:34 AM, nitin sharma
> > > > > > >> > <kumarsharma.nitin@gmail.com> wrote:
> > > > > > >> > > Hi Team,
> > > > > > >> > >
> > > > > > >> > > Is it possible to know how many Consumer
Group connected
> to
> > > > kafka
> > > > > > >> broker
> > > > > > >> > Ids
> > > > > > >> > > and as well as how many Instances within
a Group are
> > fetching
> > > > > > messages
> > > > > > >> > from
> > > > > > >> > > Kafka Brokers
> > > > > > >> > >
> > > > > > >> > > Regards,
> > > > > > >> > > Nitin Kumar Sharma.
> > > > > > >> >
> > > > > > >>
> > > > > > >>
> > > > > > >> --
> > > > > > >> Thanks,
> > > > > > >> Neha
> > > > > > >>
> > > > > >
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > >
> > > > Alec Li
> > > >
> > >
> > >
> > >
> > > --
> > > -- Guozhang
> > >
> >
> >
> >
> > --
> >
> > Alec Li
> >
>
>
>
> --
> -- Guozhang
>



-- 

Alec Li

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