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[KAFKA-1807] Improve accuracy of ProducerPerformance target throughput - Kafka - [issue]
...The code in ProducerPerformance that tries to match a target throughput is very inaccurate because it doesn't account for time spent sending messages. Since we have to get the current time t...
http://issues.apache.org/jira/browse/KAFKA-1807    Author: Ewen Cheslack-Postava, 2014-12-12, 18:56
[KAFKA-1811] ensuring registered broker host:port is unique - Kafka - [issue]
...Currently, we expect each of the registered broker to have a unique host:port pair. However, we don't enforce that, which causes various weird problems. It would be useful to ensure this dur...
http://issues.apache.org/jira/browse/KAFKA-1811    Author: Jun Rao, 2014-12-12, 18:50
[KAFKA-727] broker can still expose uncommitted data to a consumer - Kafka - [issue]
...Even after kafka-698 is fixed, we still see consumer clients occasionally see uncommitted data. The following is how this can happen.1. In Log.read(), we pass in startOffset < HW and maxO...
http://issues.apache.org/jira/browse/KAFKA-727    Author: Jun Rao, 2014-12-12, 18:37
[KAFKA-1273] Brokers should make sure replica.fetch.max.bytes >= message.max.bytes - Kafka - [issue]
...If message.max.bytes is larger than replica.fetch.max.bytes,followers can't fetch data from the leader and will incur endless retry. And this may cause high network traffic between followers...
http://issues.apache.org/jira/browse/KAFKA-1273    Author: Dong Zhong, 2014-12-12, 18:25
[expand - 1 more] - Re: Given brokers, is it able to know all the zookeepers that brokers connect to - Kafka - [mail # user]
...Currently, no.Thanks,JunOn Thu, Dec 11, 2014 at 3:39 PM, [EMAIL PROTECTED]  wrote: ...
   Author: Jun Rao, 2014-12-12, 17:56
[expand - 1 more] - Re: JMX mbean of Gauge[Long] is a java.lang.Object - Kafka - [mail # user]
...Yes, that seems to be the implementation in metrics-core. It always mapsthe value of a Gauge to an Object, instead of the generic type. So, youwill have to do the casting. If you just want t...
   Author: Jun Rao, 2014-12-12, 17:47
[expand - 2 more] - Re: leaderless topicparts after single node failure: how to repair? - Kafka - [mail # user]
...Any error in the controller and the state-change log? In particular, didbroker 5 receive a LeaderAndIsr request for those affected partitions?Thanks,JunOn Tue, Dec 9, 2014 at 8:43 AM, Neil H...
   Author: Jun Rao, 2014-12-12, 17:30
[expand - 5 more] - Re: Is Kafka documentation regarding null key misleading? - Kafka - [mail # user]
...Steven,You can take a look at kafka.producer.async.DefaultEventHandler, ingetPartition function.GuozhangOn Thu, Dec 11, 2014 at 9:58 AM, Steven Wu  wrote: ...
   Author: Guozhang Wang, 2014-12-12, 00:39
[expand - 2 more] - Re: Very slow producer - Kafka - [mail # user]
...Hi Ewen,Thank you for your response. It’s much faster after changing to async.Cheers,Huy, Le VanOn Thursday, Dec 11, 2014 at 7:08 p.m., Ewen Cheslack-Postava , wrote:Did you set producer.typ...
   Author: Huy Le Van, 2014-12-12, 00:34
[KAFKA-1351] String.format is very expensive in Scala - Kafka - [issue]
...As found in KAFKA-1350, logging is causing significant overhead in the performance of a Kafka server. There are several info statements that use String.format which is particularly expensive...
http://issues.apache.org/jira/browse/KAFKA-1351    Author: Neha Narkhede, 2014-12-11, 22:02
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB