Re: Standby Replicas with In Memory State Stores

2017-11-15 Thread Matthias J. Sax
Thanks! On 11/15/17 7:57 AM, Matt Farmer wrote: > Yes, in memory stores are backed by a changelog topic as far as I'm aware. > I have filed https://issues.apache.org/jira/browse/KAFKA-6214 > > On Tue, Nov 14, 2017 at 10:53 PM Matthias J. Sax > wrote: > >> Thanks for reporting. >> >> Sounds like

Re: Standby Replicas with In Memory State Stores

2017-11-15 Thread Matt Farmer
Yes, in memory stores are backed by a changelog topic as far as I'm aware. I have filed https://issues.apache.org/jira/browse/KAFKA-6214 On Tue, Nov 14, 2017 at 10:53 PM Matthias J. Sax wrote: > Thanks for reporting. > > Sounds like a bug to me. Please file a Jira. > > Question: even if you use

Re: Standby Replicas with In Memory State Stores

2017-11-14 Thread Matthias J. Sax
Thanks for reporting. Sounds like a bug to me. Please file a Jira. Question: even if you use an In-Memory store, it's still backed by a changelog topic, right? -Matthias On 11/14/17 3:07 PM, Matt Farmer wrote: > Hey everyone, > > We ran across a little bit of a landmine in Kafka Streams 0.11.

Standby Replicas with In Memory State Stores

2017-11-14 Thread Matt Farmer
Hey everyone, We ran across a little bit of a landmine in Kafka Streams 0.11.0.1. We decided to flip num.standby.replicas to 1 so that we had a hot copy of our state stores on other hosts to facilitate fast failover. However, one of the applications we tried this on currently uses an in memory st