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What is the status of this KIP?


- -Matthias

On 2/17/20 2:41 PM, John Roesler wrote:
> Thanks Matthias,
>
> I got the impression this was considered and rejected in
> KAFKA-7509, but I'm not sure why. Maybe it was never really
> considered at all, just proposed and not-noticed? Perhaps Randall
> or Sönke can comment. See:
https://issues.apache.org/jira/browse/KAFKA-7509?focusedCommentId=166608
68&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpan
el#comment-16660868
>
> It would be good to know why that proposal didn't move forward.
>
> Thanks, -John
>
>
>
> On Mon, Feb 17, 2020, at 12:17, Matthias J. Sax wrote: I am just
> getting aware of this KIP (not sure why I missed it).
>
> In Kafka Streams we have nested clients and need to "forward"
> configs from outer layer to inner layers -- hence, we prefix some
> configs to be able to know which inner nested clients needs this
> config.
>
> I think the simplest approach is, to add a prefix (like
> "userconfig."). All thus configs would be skipped in the
> validation step to avoid the WARN log.
>
> When forwarding configs to inner classed (like nested clients in
> KS, serializers etc) we would remove this prefix).
>
> Using a `RecordingMap` seem rather heavy weight and complex?
>
> Thoughts?
>
> -Matthias
>
> On 2/17/20 9:09 AM, John Roesler wrote:
>>>> Thanks Patrik,
>>>>
>>>> This seems to be a long and wandering issue. It seems that
>>>> KAFKA-7509 has followed a similar trajectory to
>>>> KAFKA-6793/KIP-552 , and 7509 is just recently closed in
>>>> favor of whatever we decide to do in KAFKA-6793.
>>>>
>>>> Considering (what I hope is) the whole history of this issue,
>>>> a few things emerge:
>>>>
>>>> 1. It's useful to get warned when you pass an invalid
>>>> configuration 2. It's not possible for the "top layer"
>>>> (Streams, Connect, etc.) to know up front which
>>>> configurations are applicable to pass down to the "second"
>>>> layer (Clients, RocksDB) because those layers themselves are
>>>> extensible (see below) 3. We should propose a change that
>>>> fixes this issue for the whole Kafka ecosystem at once.
>>>>
>>>> Elaboration on point 2: Users of Kafka libraries need to
>>>> register extra components like Processors, Interceptors,
>>>> RocksDBConfigSetters, RebalanceListeners, etc. They need to
>>>> pass configurations into these self-registered components.
>>>> Therefore, the outermost component (the one that you directly
>>>> pass a Properties to, and that instantiates other
>>>> Configurable components) _cannot_ know which configurations
>>>> are needed by the "extra" components inside the Configurable
>>>> components. Therefore, no approach that involves filtering
>>>> only the "needed" configurations up front, before
>>>> constructing a Configurable component, could work.
>>>>
>>>> Randall made an aside in this comment:
>>>> https://issues.apache.org/jira/browse/KAFKA-7509?focusedCommentId=1
667
>
>>>>
3834&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpan
> el#comment-16673834
>>>>
>>>>
> which I think is the most promising path right now.
>>>> Namely, to use RecordingMap (or a similar approach) when
>>>> configuring internal components and finally warn when
>>>> _everything_ has been wired up if some configuration value
>>>> wasn't used by _any_ component.
>>>>
>>>> It seems like this approach would satisfy all three of the
>>>> above points, but it needs some design/discovery work to see
>>>> what gaps exist in the current code base to achieve the goal.
>>>> It also might be a fair amount of work (which is why we
>>>> didn't follow that approach in KAFKA-7509), but I don't think
>>>> there have been any other suggestions that satisfy both point
>>>> 1 and point 2.
>>>>
>>>> Thoughts? -John
>>>>
>>>> On Wed, Feb 12, 2020, at 02:07, Patrik Kleindl wrote:
>>>>> Hi John
>>>>>
>>>>> Regarding Kafka Streams this can probably be fixed easily,
>>>>> but it does not handle the underlying issue that other
>>>>> custom prefixes are not supported. Seems I even did a short
>>>>> analysis several months ago and forgot about it, see
>>>>> https://issues.apache.org/jira/browse/KAFKA-6793?focusedCommentId=
168
>
>>>>>
70899&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpa
> nel#comment-16870899
>>>>>
>>>>>
>>>>>
> We have used custom prefixes to pass properties to the
> RocksDBConfigSett er
>>>>> and it seems people are doing something similar in Connect,
>>>>> see https://issues.apache.org/jira/browse/KAFKA-7509
>>>>>
>>>>> This KIP just seeks to avoid the false positives and
>>>>> setting it to debug was preferred over implementing the
>>>>> custom prefixes.
>>>>>
>>>>> best regards
>>>>>
>>>>> Patrik
>>>>>
>>>>> On Tue, 11 Feb 2020 at 18:21, John Roesler
>>>>> <vvcep...@apache.org> wrote:
>>>>>
>>>>>> Ah... I've just looked at some integration tests in
>>>>>> Streams, and see the same thing.
>>>>>>
>>>>>> I need to apologize to everyone in the thread for my lack
>>>>>> of understanding, and to thank Gwen for her skepticism.
>>>>>> Looking back at the KIP itself, I see that Artur
>>>>>> specifically listed log messages caused by Streams
>>>>>> itself, which I failed to realize shouldn't be there at
>>>>>> all.
>>>>>>
>>>>>> It now seems that we should not have a KIP at all, and
>>>>>> also shouldn't make any changes to log levels or loggers.
>>>>>> Instead we should treat KAFKA-6793 as a normal bug whose
>>>>>> cause is that Streams does not correctly construct the
>>>>>> client configurations when initializing the clients. It
>>>>>> is leaving in the prefixed version of the client configs,
>>>>>> but it should remove them. We should also add a test that
>>>>>> we can specify all kinds of client configurations to
>>>>>> Streams and that no WARN logs result during startup.
>>>>>>
>>>>>> Artur, what do you think about cancelling KIP-552 and
>>>>>> instead just implementing a fix?
>>>>>>
>>>>>> Again, I'm really sorry for not realizing this sooner.
>>>>>> And again, thanks to Gwen for chiming in.
>>>>>>
>>>>>> -John
>>>>>>
>>>>>> On Mon, Feb 10, 2020, at 02:19, Patrik Kleindl wrote:
>>>>>>> Hi John Starting an empty streams instance
>>>>>>>
>>>>>>> final String bootstrapServers = "broker0:9092";
>>>>>>> Properties streamsConfiguration = new Properties();
>>>>>>> streamsConfiguration.put(StreamsConfig.APPLICATION_ID_CONFIG,
>>>>>>
>>>>>>>
>
>>>>>>>
"configDemo");
>>>>>>> streamsConfiguration.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG,
>>>>>>>
>>>>>>>
>
>>>>>>>
bootstrapServers);
>>>>>>> StreamsBuilder builder = new StreamsBuilder(); final
>>>>>>> KafkaStreams streams = new
>>>>>>> KafkaStreams(builder.build(), streamsConfiguration);
>>>>>>> streams.start();
>>>>>>>
>>>>>>> results in:
>>>>>>>
>>>>>>> stream-thread
>>>>>>> [configDemo-bcaf82b4-324d-4956-a2a8-1dea0a8e3a2e-StreamThread-1]
>>>>>>>
>>>>>>>
>
>>>>>>>
Creating consumer client
>>>>>>> ConsumerConfig values: ... stream-thread
>>>>>>> [configDemo-bcaf82b4-324d-4956-a2a8-1dea0a8e3a2e-StreamThread-1-
con
>
>>>>>>>
sumer]
>>>>>>>
>>>>>>>
> Cooperative rebalancing enabled now
>>>>>>> The configuration 'admin.retries' was supplied but
>>>>>>> isn't a known config. The configuration
>>>>>>> 'admin.retry.backoff.ms' was supplied but isn't a known
>>>>>>> config. Kafka version: 2.4.0
>>>>>>>
>>>>>>> when the normal consumer is created, but not for admin
>>>>>>> client / producer / restore consumer.
>>>>>>>
>>>>>>> StreamsConfig seems to include this on purpose:
>>>>>>>
>>>>>>> final AdminClientConfig adminClientDefaultConfig = new
>>>>>>> AdminClientConfig(getClientPropsWithPrefix(ADMIN_CLIENT_PREFIX,
>>>>>>>
>>>>>>>
>
>>>>>>>
AdminClientConfig.configNames()));
>>>>>>> consumerProps.put(adminClientPrefix(AdminClientConfig.RETRIES_CO
NFI
>
>>>>>>>
G),
>>>>>>>
>>>>>>>
> adminClientDefaultConfig.getInt(AdminClientConfig.RETRIES_CONFIG));
>>>>>>>
>>>>>>
>
consumerProps.put(adminClientPrefix(AdminClientConfig.RETRY_BACKOFF_
> MS_CONFIG),
>>>>>>>
>>>>>>
>>>>>>
> adminClientDefaultConfig.getLong(AdminClientConfig.RETRY_BACKOFF_MS_CO
NF
>
>
IG));
>>>>>>>
>>>>>>> If I add
>>>>>>>
>>>>>>>
>>>>>> streamsConfiguration.put(StreamsConfig.restoreConsumerPrefix(Cons
ume
>
>>>>>>
rConfig.RECEIVE_BUFFER_CONFIG),
>>>>>>>
>>>>>>
> 65536);
>>>>>>>
>>>>>> streamsConfiguration.put(StreamsConfig.mainConsumerPrefix(Consume
rCo
>
>>>>>>
nfig.MAX_POLL_RECORDS_CONFIG),
>>>>>>>
>>>>>>
> 100);
>>>>>>>
>>>>>>> then the warnings
>>>>>>>
>>>>>>> The configuration 'main.consumer.max.poll.records' was
>>>>>>> supplied but isn't a known config. The configuration
>>>>>>> 'restore.consumer.receive.buffer.bytes' was supplied
>>>>>>> but isn't a known config.
>>>>>>>
>>>>>>> are shown for all clients, not only the last consumer.
>>>>>>>
>>>>>>> Streams provides these prefixes so maybe they are not
>>>>>>> handled correctly regarding the log message.
>>>>>>>
>>>>>>> Maybe this helps to pinpoint the source of this in KS
>>>>>>> at least
>>>>>>>
>>>>>>> best regards
>>>>>>>
>>>>>>> Patrik
>>>>>>>
>>>>>>>
>>>>>>> On Sat, 8 Feb 2020 at 05:11, John Roesler
>>>>>>> <vvcep...@apache.org> wrote:
>>>>>>>
>>>>>>>> Looking at where the log message comes from:
>>>>>>>> org.apache.kafka.common.config.AbstractConfig#logUnused
>>>>>>>> it seems like maybe the warning just happens when you
>>>>>>>> pass extra configs to a client that it has no
>>>>>>>> knowledge of (and therefore doesn't "use").
>>>>>>>>
>>>>>>>> I'm now suspicious if Streams is actually sending
>>>>>>>> extra configs to the clients, although it seems like
>>>>>>>> we _don't_ see these warnings in other cases.
>>>>>>>>
>>>>>>>> Maybe some of the folks who actually see these
>>>>>>>> messages can try to
>>>>>> pinpoint
>>>>>>>> where exactly the rogue configs are coming from?
>>>>>>>>
>>>>>>>> I might have overlooked a message at some point, but
>>>>>>>> it wasn't clear to me that we were talking about
>>>>>>>> warnings that were actually caused by Streams. I
>>>>>>>> thought the unknown configs were something
>>>>>>>> user-specified.
>>>>>>>>
>>>>>>>> Thanks, -John
>>>>>>>>
>>>>>>>> On Fri, Feb 7, 2020, at 13:10, Gwen Shapira wrote:
>>>>>>>>> Ah, got it! I am indeed curious why they do this
>>>>>>>>> :)
>>>>>>>>>
>>>>>>>>> Maybe John can shed more light. But if we can't
>>>>>>>>> find a better fix, perhaps the nice thing to do is
>>>>>>>>> really a separate logger, so users
>>>>>> who
>>>>>>>>> are not worried about shooting themselves in the
>>>>>>>>> foot can make those warnings go away.
>>>>>>>>>
>>>>>>>>> Gwen Shapira Engineering Manager | Confluent
>>>>>>>>> 650.450.2760 | @gwenshap Follow us: Twitter | blog
>>>>>>>>>
>>>>>>>>> On Fri, Feb 07, 2020 at 4:13 AM, Patrik Kleindl <
>>>>>>>>> pklei...@gmail.com
>>>>>>>
>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Hi Gwen
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Kafka Streams is not a third party library and
>>>>>>>>>> produces a lot of
>>>>>> these
>>>>>>>>>> warnings, e.g.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> *The configuration
>>>>>>>>>> 'main.consumer.max.poll.records' was supplied
>>>>>> but
>>>>>>>> isn't
>>>>>>>>>> a known config.* *The configuration
>>>>>>>>>> 'admin.retries' was supplied but isn't a known
>>>>>>>> config.*
>>>>>>>>>> and various others if you try to fine-tune the
>>>>>>>>>> restoration
>>>>>> consumer or
>>>>>>>>>> inject parameters for state stores. This results
>>>>>>>>>> in a lot of false positives and only makes new
>>>>>>>>>> people
>>>>>>>> worried
>>>>>>>>>> and then ignore the warnings altogether.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Unless this is taken care of at least the Kafka
>>>>>>>>>> Streams users will probably be better off having
>>>>>>>>>> this on debug level.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Best regards
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Patrik
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On Thu, 6 Feb 2020 at 16:55, Gwen Shapira <
>>>>>>>>>> gwen@ confluent. io ( g...@confluent.io ) >
>>>>>>>>>> wrote:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> INFO is the default log level, and while it
>>>>>>>>>>> looks less "alarming"
>>>>>> than
>>>>>>>>>>> WARN, users will still see it and in my
>>>>>>>>>>> experience, they will
>>>>>> worry
>>>>>>>> that
>>>>>>>>>>> something is wrong anyway. Or if INFO isn't
>>>>>>>>>>> the default, users
>>>>>> won't
>>>>>>>> see
>>>>>>>>>>> it, so it is no different from debug and we are
>>>>>>>>>>> left with no way
>>>>>> of
>>>>>>>>>>> warning users that they misconfigured
>>>>>>>>>>> something.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> The point is that "known configs" exist in
>>>>>>>>>>> Kafka as a validation
>>>>>>>> step. It
>>>>>>>>>>> is there to protect users. So anything that
>>>>>>>>>>> makes the concerns
>>>>>> about
>>>>>>>>>>> unknown configs invisible to users, makes the
>>>>>>>>>>> validation step
>>>>>> useless
>>>>>>>> and
>>>>>>>>>>> we may as well remove it. I'm against that - I
>>>>>>>>>>> think users should
>>>>>> be
>>>>>>>> made
>>>>>>>>>>> aware of misconfigs as much as possible -
>>>>>>>>>>> especially since if you
>>>>>>>> misspell
>>>>>>>>>>>
>>>>>>>>>>> "retention", you will lose data.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> If we look away from the symptom and go back to
>>>>>>>>>>> the actual
>>>>>> cause....
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> I think Kafka had a way (and maybe it still
>>>>>>>>>>> does) for 3rd party
>>>>>>>> developers
>>>>>>>>>>> who create client plugins (mostly interceptors)
>>>>>>>>>>> to make their
>>>>>> configs
>>>>>>>>>>> "known". 3rd party developers should be
>>>>>>>>>>> responsible for the good experience of their
>>>>>>>>>>> users. Now it is possible that you'll pick a
>>>>>> 3rd
>>>>>>>> party
>>>>>>>>>>> library that didn't do it and have a worse
>>>>>>>>>>> user experience, but I
>>>>>> am
>>>>>>>> not
>>>>>>>>>>> sure it is the job of Apache Kafka to protect
>>>>>>>>>>> users from their
>>>>>> choice
>>>>>>>> of
>>>>>>>>>>> libraries (and as long as those libraries are
>>>>>>>>>>> OSS, users can fix them).
>>>>>>>> Especially
>>>>>>>>>>> not at the expense of someone who doesn't use
>>>>>>>>>>> 3rd party libs.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Gwen
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Gwen Shapira Engineering Manager | Confluent
>>>>>>>>>>> 650.450.2760 | @gwenshap Follow us: Twitter |
>>>>>>>>>>> blog
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On Thu, Feb 06, 2020 at 2:06 AM, Artur Burtsev
>>>>>>>>>>> < artjock@ gmail.
>>>>>> com
>>>>>>>> (
>>>>>>>>>>> artj...@gmail.com ) > wrote:
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Hi John,
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> In out case it wont help, since we are
>>>>>>>>>>>> running instance per
>>>>>>>> partition and
>>>>>>>>>>>> even with summary only we get 32 warnings
>>>>>>>>>>>> per rollout.
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Hi Gwen,
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Thanks for you reply, I understand and share
>>>>>>>>>>>> your concern, I also mentioned it earlier in
>>>>>>>>>>>> the thread. Do you think it will work if
>>>>>> we
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> change
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> DEBUG to INFO?
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Thanks, Artur
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> On Thu, Feb 6, 2020 at 4:21 AM Gwen Shapira <
>>>>>>>>>>>> gwen@ confluent.
>>>>>> io (
>>>>>>>> gwen@ confluent.
>>>>>>>>>>>> io ( g...@confluent.io ) ) > wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> Sorry for late response. The reason that
>>>>>>>>>>>>> unused configs is in
>>>>>> WARN
>>>>>>>> is
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> that
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> if you misspell a config, it means that it
>>>>>>>>>>>>> will not apply. In
>>>>>> some
>>>>>>>> cases
>>>>>>>>>>>>> (default retention) you want know until too
>>>>>>>>>>>>> late. We wanted to
>>>>>> warn
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> admins
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> about possible misconfigurations.
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> In the context of a company supporting
>>>>>>>>>>>>> Kafka - customers run
>>>>>> logs at
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> INFO
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> level normally, so if we suspect a
>>>>>>>>>>>>> misconfiguration, we don't
>>>>>> want
>>>>>>>> to
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> ask
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> the customer to change level to DEBUG and
>>>>>>>>>>>>> bounce the broker. It
>>>>>> is
>>>>>>>> time
>>>>>>>>>>>>> consuming and can be risky.
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> *Gwen Shapira* Product Manager | Confluent
>>>>>>>>>>>>> 650.450.2760 | @gwenshap Follow us: Twitter
>>>>>>>>>>>>> ( https:/ / twitter. com/ ConfluentInc (
>>>>>> https:/
>>>>>>>> / twitter.
>>>>>>>>>>>>> com/ ConfluentInc (
>>>>>>>>>>>>> https://twitter.com/ConfluentInc ) ) ) |
>>>>>> blog
>>>>>>>> ( http:/
>>>>>>>>>>>>> / www. confluent.
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> io/
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> blog ( http:/ / www. confluent. io/ blog (
>>>>>>>> http://www.confluent.io/blog ) )
>>>>>>>>>>>>> )
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> Sent via Superhuman ( https:/ / sprh. mn/
>>>>>>>>>>>>> ?vip=gwen@
>>>>>> confluent. io
>>>>>>>> ( https:/
>>>>>>>>>>>>> / sprh. mn/ ?vip=gwen@ confluent. io (
>>>>>>>>>>>>> https://sprh.mn/?vip=g...@confluent.io ) )
>>>>>>>>>>>>> )
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> On Mon, Jan 06, 2020 at 4:21 AM, Stanislav
>>>>>>>>>>>>> Kozlovski <
>>>>>> stanislav@
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> confluent.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> io ( stanislav@ confluent. io (
>>>>>>>>>>>>> stanis...@confluent.io ) ) >
>>>>>> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Hey Artur,
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Perhaps changing the log level to DEBUG
>>>>>>>>>>>>>> is the simplest
>>>>>> approach.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> I wonder if other people know what the
>>>>>>>>>>>>>> motivation behind the
>>>>>> WARN
>>>>>>>> log
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> was?
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> I'm struggling to think up of a scenario
>>>>>>>>>>>>>> where I'd like to see
>>>>>>>> unused
>>>>>>>>>>>>>> values printed in anything above DEBUG.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Best, Stanislav
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> On Mon, Dec 30, 2019 at 12:52 PM Artur
>>>>>>>>>>>>>> Burtsev < artjock@
>>>>>> gmail.
>>>>>>>> com
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> ( artjock@
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> gmail. com ( artjock@ gmail. com (
>>>>>>>>>>>>>> artj...@gmail.com ) ) ) >
>>>>>>>> wrote:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Hi,
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Indeed changing the log level for the
>>>>>>>>>>>>>>> whole AbstractConfig is
>>>>>> not
>>>>>>>> an
>>>>>>>>>>>>>>> option, because logAll is extremely
>>>>>>>>>>>>>>> useful.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Grouping warnings into 1 (with the
>>>>>>>>>>>>>>> count of unused only) will
>>>>>> not
>>>>>>>> be a
>>>>>>>>>>>>>>> good option for us either. It will
>>>>>>>>>>>>>>> still be pretty noisy.
>>>>>> Imagine
>>>>>>>> we
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> have
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> 32 partitions and scaled up the
>>>>>>>>>>>>>>> application to 32 instances
>>>>>> then
>>>>>>>> we
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> still
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> have 32 warnings per application
>>>>>>>>>>>>>>> (instead of 96 now) while we
>>>>>>>> would
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> like
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> to have 0 warnings because we are
>>>>>>>>>>>>>>> perfectly aware of using
>>>>>>>>>>>>>>> schema.registry.url and its totally
>>>>>>>>>>>>>>> fine, and we don't have
>>>>>> to be
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> warned
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> every time we start the application.
>>>>>>>>>>>>>>> Now imagine we use more
>>>>>> than
>>>>>>>> one
>>>>>>>>>>>>>>> consumer per application, then it will
>>>>>>>>>>>>>>> add another
>>>>>> multiplication
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> factor
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> to these grouped warnings and we still
>>>>>>>>>>>>>>> have a lot of those.
>>>>>> So I
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> would say
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> grouping doesn't help much.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> I think adding extra logger like
>>>>>>>>>>>>>>> "org.apache.kafka.clients.producer.ProducerConfig.unused
"
>>>>>>
>>>>>>>>>>>>>>>
>
>>>>>>>>>>>>>>>
could be
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> another
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> good option. That would leave the
>>>>>>>>>>>>>>> existing interface
>>>>>> untouched and
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> give
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> everyone an option to mute irrelevant
>>>>>>>>>>>>>>> warnings.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> To summarize, I still can see 3 options
>>>>>>>>>>>>>>> with its pros and cons
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> discussed
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> in the thread: 1) extra config with
>>>>>>>>>>>>>>> interface to handle unused 2) change
>>>>>>>>>>>>>>> unused warn to debug 3) add extra
>>>>>>>>>>>>>>> logger for unused
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Please let me know what do you think.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Thanks, Artur
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> On Mon, Dec 30, 2019 at 11:07 AM
>>>>>>>>>>>>>>> Stanislav Kozlovski < stanislav@
>>>>>>>>>>>>>>> confluent. io ( stanislav@ confluent.
>>>>>>>>>>>>>>> io (
>>>>>>>> stanislav@ confluent.
>>>>>>>>>>>>>>> io ( stanis...@confluent.io ) ) ) >
>>>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Hi all,
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Would printing all the unused
>>>>>>>>>>>>>>>> configurations in one line,
>>>>>> versus
>>>>>>>> N
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> lines,
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> be more helpful? I know that it
>>>>>>>>>>>>>>>> would greatly reduce the
>>>>>>>> verbosity
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> in log
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> visualization tools like Kibana while
>>>>>>>>>>>>>>>> still allowing us to
>>>>>> see
>>>>>>>> all
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> the
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> relevant information without the need
>>>>>>>>>>>>>>>> for an explicit action
>>>>>> (e.g
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> changing
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> the log level)
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Best, Stanislav
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> On Sat, Dec 28, 2019 at 3:13 PM John
>>>>>>>>>>>>>>>> Roesler < vvcephei@
>>>>>> apache.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> org ( vvcephei@
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> apache. org ( vvcephei@ apache. org
>>>>>>>>>>>>>>>> ( vvcep...@apache.org )
>>>>>> ) )
>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Hi Artur,
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> That’s a good point.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> One thing you can do is log a
>>>>>>>>>>>>>>>>> summary at WARN level, like
>>>>>> “27
>>>>>>>>>>>>>>>>> configurations were ignored.
>>>>>>>>>>>>>>>>> Ignored configurations are
>>>>>> logged
>>>>>>>> at
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> DEBUG
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> level.”
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> I looked into the code a little,
>>>>>>>>>>>>>>>>> and these log messages are
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> generated
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> in
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> AbstractConfig (logAll and
>>>>>>>>>>>>>>>>> logUnused). They both use the
>>>>>> logger
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> associated
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> with the relevant config class
>>>>>>>>>>>>>>>>> (StreamsConfig,
>>>>>> ProducerConfig,
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> etc.).
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> The
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> list of all configs is logged at
>>>>>>>>>>>>>>>>> INFO level, and the list of
>>>>>>>> unused
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> configs
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> is logged at WARN level. This means
>>>>>>>>>>>>>>>>> that it's not possible
>>>>>> to
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> silence
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> the
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> unused config messages while still
>>>>>>>>>>>>>>>>> logging the list of all
>>>>>>>> configs.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> You
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> could only silence both by setting
>>>>>>>>>>>>>>>>> (for example)
>>>>>> ProducerConfig
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> logger
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> to
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> ERROR or OFF.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> If it's desirable to be able to
>>>>>>>>>>>>>>>>> toggle them independently,
>>>>>> then
>>>>>>>> you
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> can
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> create a separate logger for
>>>>>>>>>>>>>>>>> unused configs, named something
>>>>>>>> like
>>>>>>>>>>>>>>>>> "org.apache.kafka.clients.producer.ProducerConfig.unus
ed"
>
>>>>>>>>>>>>>>>>>
.
>>>>>>>>
>>>>>>>>>>>>>>>>>
> Then, you
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> can
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> leave the log at WARN, so it would
>>>>>>>>>>>>>>>>> continue to be printed by
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> default,
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> and
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> anyone could disable it by setting
>>>>>>>>>>>>>>>>> "org.apache.kafka.clients.producer.ProducerConfig.unus
ed"
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
to
>>>>>>>> ERROR
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> or
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> OFF,
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> without disturbing the rest of the
>>>>>>>>>>>>>>>>> config log messages.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> It's simpler without the extra
>>>>>>>>>>>>>>>>> logger, but you also get less
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> control.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Do
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> you think the extra control is
>>>>>>>>>>>>>>>>> necessary, versus printing a
>>>>>>>> summary
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> at
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> WARN
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> level? -John
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> On Fri, Dec 27, 2019, at 04:26,
>>>>>>>>>>>>>>>>> Artur Burtsev wrote:
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> Hi,
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> Indeed changing log level to
>>>>>>>>>>>>>>>>>> debug would be the easiest
>>>>>> and I
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> think that
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> would be a good solution. When no
>>>>>>>>>>>>>>>>>> one object I'm ready to
>>>>>> move
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> forward
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> with this approach and submit a
>>>>>>>>>>>>>>>>>> MR.
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> The only minor thing I have –
>>>>>>>>>>>>>>>>>> having it at debug log level
>>>>>>>> might
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> make it a
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> bit less friendly for
>>>>>>>>>>>>>>>>>> developers, especially for those
>>>>>>>>>>>>>>>>>> who
>>>>>>>> just do
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> the
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> first steps in Kafka. For
>>>>>>>>>>>>>>>>>> example, if you misspelled the
>>>>>>>> property
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> name and
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> trying to understand why things
>>>>>>>>>>>>>>>>>> don't do what you expect.
>>>>>>>> Having a
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> warning
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> might save some time in this
>>>>>>>>>>>>>>>>>> case. Other
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> than
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> that I cannot see any reasons to
>>>>>>>>>>>>>>>>>> have warnings there.
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> Thanks, Artur
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> On Thu, Dec 26, 2019 at 10:01 PM
>>>>>>>>>>>>>>>>>> John Roesler < vvcephei@
>>>>>>>> apache.
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> org ( vvcephei@
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> apache. org ( vvcephei@ apache.
>>>>>>>>>>>>>>>>>> org ( vvcep...@apache.org
>>>>>> ) )
>>>>>>>> ) >
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> Thanks for the KIP, Artur!
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> For reference, here is the
>>>>>>>>>>>>>>>>>>> kip:
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> https:/ / cwiki. apache. org/
>>>>>>>>>>>>>>> confluence/ display/ KAFKA/
>>>>>>>>>>>>>>> KIP-552%3A+Add+interface+to+handle+unused+config
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>
>>>>>>>>>>>>>>>
(
>>>>>>>>>>>>>>> https:/ / cwiki. apache. org/
>>>>>>>>>>>>>>> confluence/ display/ KAFKA/
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> KIP-552%3A+Add+interface+to+handle+unused+config
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>
(
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> https:/ / cwiki. apache. org/ confluence/
>>>>>>>>>>> display/ KAFKA/
>>>>>>>> KIP-552%3A+Add+interface+to+handle+unused+config
>>>>>>>>>>> (
>>>>>>>>>>>
>>>>>>>>
>>>>>> https://cwiki.apache.org/confluence/display/KAFKA/KIP-552%3A+Add+
int
>
>>>>>>
erface+to+handle+unused+config
>>>>>>>>>>>
>>>>>>
> )
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> ) )
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> I agree, these warnings are
>>>>>>>>>>>>>>>>>>> kind of a nuisance. Would it
>>>>>> be
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> feasible
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> just to leverage log4j in some way
>>>>>>>>>>>>>>>>> to make it easy to filter
>>>>>>>> these
>>>>>>>>>>>>>>>>> messages? For example, we could
>>>>>>>>>>>>>>>>> move those warnings to debug
>>>>>>>> level,
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> or
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> even
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> use a separate logger for them.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> Thanks for starting the
>>>>>>>>>>>>>>>>>>> discussion. -John
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> On Tue, Dec 24, 2019, at 07:23,
>>>>>>>>>>>>>>>>>>> Artur Burtsev wrote:
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>> Hi,
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>> This KIP provides a way to
>>>>>>>>>>>>>>>>>>>> deal with a warning "The
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> configuration {}
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>> was supplied but isn't a
>>>>>>>>>>>>>>>>>>>> known config." when it is
>>>>>>>>>>>>>>>>>>>> not
>>>>>>>> relevant.
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>> Cheers, Artur
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> -- Best, Stanislav
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> -- Best, Stanislav
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>
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