Oh, hmm.  There is even documentation on it:

http://kafka.apache.org/documentation.html#basic_ops_increase_replication_factor

Having a difficult time sifting through the logs.  Is this not a common
operation?  Do users normally just delete the topic and create a new one??



On Wed, Jun 10, 2015 at 8:20 PM, Shady Xu <shad...@gmail.com> wrote:

> Right now, Kafka topics do not support changing replication factor or
> partition number after creation. The  kafka-reassign-partitions.sh tool can
> only reassign existent partitions.
>
> 2015-06-11 9:31 GMT+08:00 Gwen Shapira <gshap...@cloudera.com>:
>
> > What do the logs show?
> >
> > On Wed, Jun 10, 2015 at 5:07 PM, Dillian Murphey
> > <crackshotm...@gmail.com> wrote:
> > > Ran this:
> > >
> > > $KAFKA_HOME/bin/kafka-reassign-partitions.sh
> > >
> > > But Kafka did not actually do the replication. Topic description shows
> > the
> > > right numbers, but it just didn't replicate.
> > >
> > > What's wrong, and how do I trigger the replication to occur??
> > >
> > > I'm running 0.8.2.0
> > >
> > > thanks
> >
>

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