> On May 12, 2015, 7:38 p.m., Dong Lin wrote:
> > clients/src/main/java/org/apache/kafka/common/metrics/Sensor.java, lines 
> > 122-127
> > <https://reviews.apache.org/r/33049/diff/9/?file=955824#file955824line122>
> >
> >     The function quits on the first quota violaation, and calculate 
> > delayTime based on this violation. 
> >     
> >     Should we enumerate all metric in this.metrics() and set delayTime of 
> > the QuotaViolationException to be the largest delayTime of all violatoins?
> 
> Aditya Auradkar wrote:
>     Also a good point. Perhaps you can fix it in the patch you will submit? 
> For quotas, we effectively have only one quota per sensor, so it's ok (for 
> now).

Sure! Will do it.


> On May 12, 2015, 7:38 p.m., Dong Lin wrote:
> > clients/src/main/java/org/apache/kafka/common/metrics/Sensor.java, line 117
> > <https://reviews.apache.org/r/33049/diff/9/?file=955824#file955824line117>
> >
> >     metric.value(timeMs), which translates to Rate.measure(config, timeMs), 
> > may return Infinity. This may introduce infinite delay.
> >     
> >     I think this bug is rooted either in class Rate or  class SampledStat. 
> > In short, SampledStat.purgeObsoleteSamples will remove all Samples, such 
> > that SampledStat.oldest(now) == now.
> >     
> >     Should I open a ticket and submit a patch for it?
> 
> Aditya Auradkar wrote:
>     Hey dong, yeah you should submit a patch for it.

Sure! I will do it.


- Dong


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On May 11, 2015, 11:17 p.m., Aditya Auradkar wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/33049/
> -----------------------------------------------------------
> 
> (Updated May 11, 2015, 11:17 p.m.)
> 
> 
> Review request for kafka, Joel Koshy and Jun Rao.
> 
> 
> Bugs: KAFKA-2084
>     https://issues.apache.org/jira/browse/KAFKA-2084
> 
> 
> Repository: kafka
> 
> 
> Description
> -------
> 
> Updated patch for quotas. This patch does the following: 
> 1. Add per-client metrics for both producer and consumers 
> 2. Add configuration for quotas 
> 3. Compute delay times in the metrics package and return the delay times in 
> QuotaViolationException 
> 4. Add a DelayQueue in KafkaApi's that can be used to throttle any type of 
> request. Implemented request throttling for produce and fetch requests. 
> 5. Added unit and integration test cases.
> 6. This doesn't include a system test. There is a separate ticket for that
> 
> 
> Diffs
> -----
> 
>   clients/src/main/java/org/apache/kafka/common/metrics/MetricConfig.java 
> dfa1b0a11042ad9d127226f0e0cec8b1d42b8441 
>   clients/src/main/java/org/apache/kafka/common/metrics/Quota.java 
> d82bb0c055e631425bc1ebbc7d387baac76aeeaa 
>   
> clients/src/main/java/org/apache/kafka/common/metrics/QuotaViolationException.java
>  a451e5385c9eca76b38b425e8ac856b2715fcffe 
>   clients/src/main/java/org/apache/kafka/common/metrics/Sensor.java 
> ca823fd4639523018311b814fde69b6177e73b97 
>   clients/src/test/java/org/apache/kafka/common/utils/MockTime.java  
>   core/src/main/scala/kafka/server/ClientQuotaMetrics.scala PRE-CREATION 
>   core/src/main/scala/kafka/server/KafkaApis.scala 
> 417960dd1ab407ebebad8fdb0e97415db3e91a2f 
>   core/src/main/scala/kafka/server/KafkaConfig.scala 
> 9efa15ca5567b295ab412ee9eea7c03eb4cdc18b 
>   core/src/main/scala/kafka/server/KafkaServer.scala 
> b7d2a2842e17411a823b93bdedc84657cbd62be1 
>   core/src/main/scala/kafka/server/ReplicaManager.scala 
> 59c9bc3ac3a8afc07a6f8c88c5871304db588d17 
>   core/src/main/scala/kafka/server/ThrottledRequest.scala PRE-CREATION 
>   core/src/main/scala/kafka/utils/ShutdownableThread.scala 
> fc226c863095b7761290292cd8755cd7ad0f155c 
>   core/src/test/scala/integration/kafka/api/QuotasTest.scala PRE-CREATION 
>   core/src/test/scala/unit/kafka/server/ClientQuotaMetricsTest.scala 
> PRE-CREATION 
>   core/src/test/scala/unit/kafka/server/KafkaConfigConfigDefTest.scala 
> 8014a5a6c362785539f24eb03d77278434614fe6 
>   core/src/test/scala/unit/kafka/server/ThrottledRequestExpirationTest.scala 
> PRE-CREATION 
> 
> Diff: https://reviews.apache.org/r/33049/diff/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Aditya Auradkar
> 
>

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