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From Tom Dearman <tom.dear...@gmail.com>
Subject Re: Kafka-streams restoreActiveState
Date Thu, 04 Feb 2016 08:54:23 GMT

I will do that now, thanks.
It looks like it is just due to StoreChangeLogger getting its topic value direct from the
store suppliers name which is just the [store-name].


> On 3 Feb 2016, at 23:57, Guozhang Wang <wangguoz@gmail.com> wrote:
> Thanks for letting me know. From what you said it seems a bug in the Kafka
> Streams, would you like to create JIRA with your topology code? I'll start
> the investigation right away.
> Guozhang
> On Wed, Feb 3, 2016 at 3:45 PM, Tom Dearman <tom.dearman@gmail.com> wrote:
>> I built trunk and pulled source yesterday. There are two topics created one
>> called [store-name] the other as you describe
>> [Job-Id]-[Store-name]-"changelog".
>> Only the one called [store-name] contained the store state, the other topic
>> contained nothing so to get this to work I had to compile the code with the
>> restore from [store-name].
>> On Wed, 3 Feb 2016, 18:50 Guozhang Wang <wangguoz@gmail.com> wrote:
>>> Hello Tom,
>>> Thanks for trying out Kafka Streams. A quick question: are you using
>> Kafka
>>> Streams built from trunk?
>>> In the latest trunk we changed changelog topic name to be the store-name
>> +
>>> "-changelog" suffix. So when your processing job starts the topology
>>> created state should have the topic name as
>>> [Job-Id]-[Store-name]-"changelog".
>>> Guozhang
>>> On Wed, Feb 3, 2016 at 7:33 AM, Tom Dearman <tom.dearman@gmail.com>
>> wrote:
>>>> I am trying to use kafka-streams (I know it isn’t released yet but
>> seems
>>>> to be fairly far on in its implementation and I would like to use that
>>>> rather than samza for this project as my project doesn’t need to go
>> live
>>>> yet). My set up has a single source, producer, in memory state store
>> and
>>>> sink. The state store is called local-state.  I can see that there is a
>>>> kafka topic created which does contain my state and the topic name is
>> the
>>>> same as the state store name.  When I stop and restart the kafka stream
>>>> code, it restores the state from a topic with a name from a call to
>>>> storeChangelogTopic(jobId, storeName), there is a topic that exists
>> with
>>>> this name but it doesn’t have the state in it, the state is in a topic
>>>> called storeName.  If I change the code so it restores from changeName
>> it
>>>> works fine.  Am I doing something wrong and if so any pointers as to
>>> what I
>>>> should do.
>>>> Thanks.
>>> --
>>> -- Guozhang
> -- 
> -- Guozhang

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