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From Abhimanyu Nagrath <abhimanyunagr...@gmail.com>
Subject Re: 答复: kafka.admin.TopicCommand Failing
Date Fri, 17 Nov 2017 06:34:51 GMT
I am absolutely new to these technologies . Can you assist me with the
below mentioned queries :

   1. How to decide the value of zookeeper.connection.timeout.ms ?
   2. How to check GC log to see if the STW pauses expired the Zk sessions
   3. How to tune GC .

Regards,
Abhimanyu

On Fri, Nov 17, 2017 at 11:38 AM, Hu Xi <huxi_2b@hotmail.com> wrote:

> Increasing `zookeeper.connection.timeout.ms` to a relatively larger value
> might be a help. Besides, you could check GC log to see if the STW pauses
> expired the Zk sessions.
>
>
> ________________________________
> 发件人: Abhimanyu Nagrath <abhimanyunagrath@gmail.com>
> 发送时间: 2017年11月17日 13:51
> 收件人: users@kafka.apache.org; user@zookeeper.apache.org
> 主题: Re: kafka.admin.TopicCommand Failing
>
> One more thing was checking my Kafka-server.log its fill with the warning
>
> Attempting to send response via channel for which there is no open
> connection, connection id 2 (Kafka.network.Processor)
>
> IS this the reason for the above issue? How to resolve this. Need help
> production is breaking.
>
>
> Regards,
> Abhimanyu
>
> On Thu, Nov 16, 2017 at 5:08 PM, Abhimanyu Nagrath <
> abhimanyunagrath@gmail.com> wrote:
>
> > Hi, I am using a single node Kafka V 0.10.2 (16 GB RAM, 8 cores) and a
> > single node zookeeper V  3.4.9 (4 GB RAM, 1 core ). I am having 64
> consumer
> > groups and 500 topics each having 250 partitions. I am able to execute
> the
> > commands which require only Kafka broker and its running fine
> > ex.
> >
> > > ./kafka-consumer-groups.sh --bootstrap-server localhost:9092
> > > --describe --group <topic>
> >
> > But when I execute the admin command like create topic, alter topic For
> > example
> >
> > > ./kafka-topics.sh --create --zookeeper <zookeeper>:2181
> > > --replication-factor 1 --partitions 1 --topic <topic>
> >
> > Following exception is being displayed:
> >
> >
> >
> > > Error while executing topic command : replication factor: 1 larger
> > > than available brokers: 0 [2017-11-16 11:22:13,592] ERROR
> > > org.apache.kafka.common.errors.InvalidReplicationFactorException:
> > > replication factor: 1 larger than available brokers: 0
> > > (kafka.admin.TopicCommand$)
> >
> > I checked my broker is up. In server.log following warnings are there
> >
> >     [2017-11-16 11:14:26,959] WARN Client session timed out, have not
> > heard from server in 15843ms for sessionid 0x15aa7f586e1c061
> > (org.apache.zookeeper.ClientCnxn)
> >     [2017-11-16 11:14:28,795] WARN Unable to reconnect to ZooKeeper
> > service, session 0x15aa7f586e1c061 has expired (org.apache.zookeeper.
> > ClientCnxn)
> >     [2017-11-16 11:21:46,055] WARN Unable to reconnect to ZooKeeper
> > service, session 0x15aa7f586e1c067 has expired (org.apache.zookeeper.
> > ClientCnxn)
> >
> > Below mentioned is my Kafka server configuration :
> >
> >     broker.id=1
> >     delete.topic.enable=true
> >     num.network.threads=3
> >     num.io.threads=8
> >     socket.send.buffer.bytes=102400
> >     socket.receive.buffer.bytes=102400
> >     socket.request.max.bytes=104857600
> >     log.dirs=/kafka/data/logs
> >     num.partitions=1
> >     log.segment.bytes=1073741824
> >     log.retention.check.interval.ms=300000
> >     zookeeper.connect=<zookeeperIP>:2181
> >     zookeeper.connection.timeout.ms=6000
> >
> > Zookeeper Configuration is :
> >
> >     # The number of milliseconds of each tick
> >     tickTime=2000
> >     # The number of ticks that the initial
> >     # synchronization phase can take
> >     initLimit=10
> >     # The number of ticks that can pass between
> >     # sending a request and getting an acknowledgement
> >     syncLimit=5
> >     # the directory where the snapshot is stored.
> >     # do not use /tmp for storage, /tmp here is just
> >     # example sakes.
> >     dataDir=/zookeeper/data
> >     # the port at which the clients will connect
> >     clientPort=2181
> >     # the maximum number of client connections.
> >     # increase this if you need to handle more clients
> >     #maxClientCnxns=60
> >     autopurge.snapRetainCount=20
> >     # Purge task interval in hours
> >     # Set to "0" to disable auto purge feature
> >     autopurge.purgeInterval=48
> >
> > I am not able to figure out which configuration to tune. What I am
> missing
> > .Any help will be appreciated.
> >
> >
> >
> >
> >  Regards,
> > Abhimanyu
> >
>

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