Re: Number of partitions for offsets topic cannot be changed

[Anu P]

Thanks Swapnil.

I changed *offsets.topic.num.partitions* in server.properties file and
restarted the broker. But, still this config change does not take effect.

Any ideas?

Thanks in advance
Tanvi

On Sun, Mar 25, 2018 at 12:30 AM, Swapnil Gupta <neomatrix1...@gmail.com>
wrote:

> In brief, this is system level configuration by Kafka.
>
> Consumer offsets partitions can't be changed through command line.
>
> You have to change the configuration file and set this
> *offsets.topic.num.partitions* property to change this.
>
> On Sun, Mar 25, 2018, 12:49 Anu P <iamkafkau...@gmail.com> wrote:
>
> > Hi,
> >
> > I am trying to change the number of partitions for __consumer_offsets
> topic
> > by using the following command. However, I get an error stating "Number
> of
> > partitions for offsets topic cannot be changed"
> >
> >
> > */opt/kafka/bin/kafka-topics.sh --zookeeper  --alter --topic
> > __consumer_offsets --partitions 54   *
> >
> >
> > Error while executing topic command : The number of partitions for the
> > offsets topic cannot be changed.
> > ERROR java.lang.IllegalArgumentException: The number of partitions for
> the
> > offsets topic cannot be changed.
> > at
> >
> > kafka.admin.TopicCommand$$anonfun$alterTopic$1.apply(
> TopicCommand.scala:142)
> > .
> >
> >
> >
> > Environment details:
> >
> >1. 3 zookeepers and 3 kafka brokers (version 1.0.1)
> >2. After deploying kafka, I tried the kafka-topics command (above) to
> >increase it partitions. But it fails. Can someone please help me
> > understand
> >why? Am I missing something?
> >3. I want to distribute partitions leaders equally among brokers. So
> >want to increase the number of partitions for offsets topic.
> >
> >
> > Thanks in advance.
> >
> > Tanvi
> >
>

Number of partitions for offsets topic cannot be changed

[Anu P]

Hi,

I am trying to change the number of partitions for __consumer_offsets topic
by using the following command. However, I get an error stating "Number of
partitions for offsets topic cannot be changed"


*/opt/kafka/bin/kafka-topics.sh --zookeeper  --alter --topic
__consumer_offsets --partitions 54   *


Error while executing topic command : The number of partitions for the
offsets topic cannot be changed.
ERROR java.lang.IllegalArgumentException: The number of partitions for the
offsets topic cannot be changed.
at
kafka.admin.TopicCommand$$anonfun$alterTopic$1.apply(TopicCommand.scala:142)
.



Environment details:

   1. 3 zookeepers and 3 kafka brokers (version 1.0.1)
   2. After deploying kafka, I tried the kafka-topics command (above) to
   increase it partitions. But it fails. Can someone please help me understand
   why? Am I missing something?
   3. I want to distribute partitions leaders equally among brokers. So
   want to increase the number of partitions for offsets topic.


Thanks in advance.

Tanvi