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From Guozhang Wang <wangg...@gmail.com>
Subject Re: caching permantly disabled in Kafka Streams
Date Thu, 14 Dec 2017 17:42:05 GMT
Artur,

This is because Properties#getProperty() is expecting a String value, and
hence 10 * 1024 * 1024L is not recognized; you can try "10485760".


Guozhang

On Wed, Dec 13, 2017 at 10:51 PM, Artur Mrozowski <artmro@gmail.com> wrote:

> Sure.
>
> Another observation I've made is that before I started modifying these
> properties I could spot quite a few duplicates in the state store. Then I
> applied exactly once semantics which removed most of the duplicates.
> Finally I disabled cache by setting CACHE_MAX_BYTES_BUFFERING_CONFIG to 0
> which duplicates each record. Since then I've been trying to reenable it.
>
>  StreamsConfig config = new StreamsConfig(getProperties());
>
>
> System.out.println(getProperties().getProperty(StreamsConfig.PROCESSING_
> GUARANTEE_CONFIG));
>
> System.out.println(getProperties().getProperty(
> StreamsConfig.CACHE_MAX_BYTES_BUFFERING_CONFIG));
>
> System.out.println(getProperties().getProperty(StreamsConfig.STATE_DIR_
> CONFIG));
>
> exactly_once
> null
> /tmp/customerStoreLocal6
>
>
> private static Properties getProperties() {
>         Properties settings = new Properties();
>         settings.put(StreamsConfig.APPLICATION_ID_CONFIG, APP_ID);
>         settings.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG,
> "localhost:9092");
>         settings.put(StreamsConfig.ZOOKEEPER_CONNECT_CONFIG,
> "localhost:2181");
>         settings.put(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG,
> Serdes.String().getClass());
>         settings.put(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG,
> Serdes.String().getClass());
>
> settings.put(StreamsConfig.STATE_DIR_CONFIG,"/tmp/customerStoreLocal6");
>         settings.put(StreamsConfig.TIMESTAMP_EXTRACTOR_CLASS_CONFIG,
> WallclockTimestampExtractor.class);
>
> settings.put(StreamsConfig.PROCESSING_GUARANTEE_CONFIG,"exactly_once");
>         settings.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG,"earliest");
>         settings.put(StreamsConfig.CACHE_MAX_BYTES_BUFFERING_CONFIG,10 *
> 1024 * 1024L);
>         return settings;
>     }
>
> On Wed, Dec 13, 2017 at 11:53 PM, Guozhang Wang <wangguoz@gmail.com>
> wrote:
>
> > Could you show us the testing code snippet that shows how you set the
> > configs and how you read from it for verification?
> >
> >
> >
> > Guozhang
> >
> > On Wed, Dec 13, 2017 at 1:07 PM, Artur Mrozowski <artmro@gmail.com>
> wrote:
> >
> > > Hello Guozhang,
> > >
> > > I print out some values that I assign to StreamsConfig in the console,
> > but
> > > the CACHE_MAX_BYTES_BUFFERING_CONFIG is always null. I disabled
> caching
> > by
> > > setting it to 0 today, and it seems to have the expected effect.
> > > But after this I am not able to assign any value to it, it is always
> nul.
> > >
> > > Best Regards
> > > Artur
> > >
> > > On Wed, Dec 13, 2017 at 5:44 PM, Guozhang Wang <wangguoz@gmail.com>
> > wrote:
> > >
> > > > Hello Artur,
> > > >
> > > > What do you mean exactly by "It simply returns null no matter what
> > value
> > > I
> > > > provide."?
> > > >
> > > >
> > > > Guozhang
> > > >
> > > >
> > > > On Wed, Dec 13, 2017 at 8:02 AM, Artur Mrozowski <artmro@gmail.com>
> > > wrote:
> > > >
> > > > > Hi Bill,
> > > > > No, but I'll be happy to generate it. How do I generate logs for
> > > > > StreamsConfig?
> > > > >
> > > > > Thanks,
> > > > > Artur
> > > > >
> > > > > On Wed, Dec 13, 2017 at 3:44 PM, Bill Bejeck <bill@confluent.io>
> > > wrote:
> > > > >
> > > > > > H Artur,
> > > > > >
> > > > > > Do you have any log files you can share for this issue?
> > > > > >
> > > > > > Thanks,
> > > > > > Bill
> > > > > >
> > > > > > On Wed, Dec 13, 2017 at 8:15 AM, Artur Mrozowski <
> artmro@gmail.com
> > >
> > > > > wrote:
> > > > > >
> > > > > > > Actually I can see all other properties being set, except
for
> > > > > > > CACHE_MAX_BYTES_BUFFERING_CONFIG that is null.
> > > > > > > I use 0.11.0.2 Kafka Streams.
> > > > > > > Has anyone encountered this issue?
> > > > > > >
> > > > > > > /Artur
> > > > > > >
> > > > > > > On Wed, Dec 13, 2017 at 1:11 PM, Artur Mrozowski <
> > artmro@gmail.com
> > > >
> > > > > > wrote:
> > > > > > >
> > > > > > > > Hi,
> > > > > > > > I played around with caching on Confluent platform
3.3 by
> first
> > > > > > > disabling,
> > > > > > > > setting to zero. Now, it seems I can not enable it
again. It
> > > simply
> > > > > > > returns
> > > > > > > > null no matter what value I provide.
> > > > > > > >
> > > > > > > > e.g
> > > > > > > > settings.put(StreamsConfig.CACHE_MAX_BYTES_BUFFERING_
> > > > > > > > CONFIG,10*1024*1024L);
> > > > > > > >
> > > > > > > > How can I enable it again? It generates a lot of duplicates.
> > > > > > > >
> > > > > > > > Best Regards
> > > > > > > > Artur
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > -- Guozhang
> > > >
> > >
> >
> >
> >
> > --
> > -- Guozhang
> >
>



-- 
-- Guozhang

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