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From "Philip O'Toole" <phi...@loggly.com>
Subject Re: Changing the number of partitions after a topic is created
Date Thu, 04 Jul 2013 18:00:09 GMT
On Thu, Jul 4, 2013 at 12:06 PM, Calvin Lei <ckplei@gmail.com> wrote:
> Thanks Phillip. I used the kafka-topic.sh to create the topic to have 1 partition. Would
the changing the server properties still work in this case?

I'm not familiar with that script, but server.properties is what
matters. Change that and it will work.

> Also this setting sounds like a global overwrite, correct?

Yes, but it can be set on a topic-by-topic basis if you prefer. Read
the comments contained within the server.properties for guidance.


> regards,
> Cal
> On Jul 4, 2013, at 11:49 AM, Philip O'Toole <philip@loggly.com> wrote:
>> If you can pause your Producers, simply change the partition count to
>> 10 in the Kafka server properties file, and restart it. If you use the
>> high-level consumer, it will automatically start draining all
>> partitions that exist for a given topic.
>> And our Kafka producers always write to partition -1 for a given
>> topic, meaning they never care about the partition count, and need no
>> changes in circumstances like this.
>> Philip
>> On Thu, Jul 4, 2013 at 11:11 AM, Calvin Lei <ckplei@gmail.com> wrote:
>>> Hi I have a few topics created with 1 partition. After running the cluster
>>> for a few days, I want to increase the partition to 10 to improve the
>>> consumer throughput. I learnt that it is not supported in 0.8.
>>> What is the recommendation of improving consumer throughput after a topic
>>> is created and the data volume increased?
>>> Regards,
>>> Cal

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