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[KAFKA-1610] Local modifications to collections generated from mapValues will be lost - Kafka - [issue]
...In our current Scala code base we have 40+ usages of mapValues, however it has an important semantic difference with map, which is that "map" creates a new map collection instance, while "ma...
http://issues.apache.org/jira/browse/KAFKA-1610    Author: Guozhang Wang, 2014-08-28, 03:28
[expand - 1 more] - Re: [DISCUSSION] Error Handling and Logging at Kafka - Kafka - [mail # dev]
...Thanks Joe / Gwen for the great input. I have commented on the pageaccordingly also.There is a ticket for the background connection issue: KAFKA-1592.On Wed, Aug 27, 2014 at 10:25 AM, Gwen S...
   Author: Guozhang Wang, 2014-08-27, 20:40
[KAFKA-1591] Clean-up Unnecessary stack trace in error/warn logs - Kafka - [issue]
...Some of the unnecessary stack traces in error / warning log entries can easily pollute the log files. Examples include KAFKA-1066, etc....
http://issues.apache.org/jira/browse/KAFKA-1591    Author: Guozhang Wang, 2014-08-27, 19:23
[KAFKA-1592] Some INFO level logging needs to be DEBUG - Kafka - [issue]
...Some of the INFO level log4j entries are not really useful, for example in SocketServer.Processor, due to metadata requests that reply on a separate and short-lived socket, the following log...
http://issues.apache.org/jira/browse/KAFKA-1592    Author: Guozhang Wang, 2014-08-27, 18:43
[KAFKA-1583] Kafka API Refactoring - Kafka - [issue]
...This is the next step of KAFKA-1430. Details can be found at this page:https://cwiki.apache.org/confluence/display/KAFKA/Kafka+API+Refactoring...
http://issues.apache.org/jira/browse/KAFKA-1583    Author: Guozhang Wang, 2014-08-27, 17:45
[expand - 1 more] - Re: Kafka Log Cleaner Stopped (?) - Kafka - [mail # user]
...Log cleaner will only wakeup and start the cleaning work when there arelogs that are "dirty" enough to be cleaned. So if the topic-partitions doesnot get enough traffic to make it dirty the ...
   Author: Guozhang Wang, 2014-08-26, 18:21
[KAFKA-1438] Migrate kafka client tools - Kafka - [issue]
...Currently the console/perf client tools scatter across different packages, we'd better to:1. Move Consumer/ProducerPerformance and SimpleConsumerPerformance to tools and remove the perf sub-...
http://issues.apache.org/jira/browse/KAFKA-1438    Author: Guozhang Wang, 2014-08-26, 08:32
Re: kafka unit test in Java, TestUtils choosePort sends NoSuchMethodError - Kafka - [mail # user]
...Parin,Which scala version are you using? And which kafka version are you workingon?GuozhangOn Sat, Aug 23, 2014 at 7:16 PM, Parin Jogani wrote: ...
   Author: Guozhang Wang, 2014-08-24, 02:54
Re: step by step guide for writing a non-java 0.9 client - Kafka - [mail # user]
...Hello Dana,The "step by step guide" wiki is still under construction by now, and hencenot public yet.We will try to release the wiki once the new consumer in Java is out andthe wiki is compl...
   Author: Guozhang Wang, 2014-08-23, 21:19
[KAFKA-1548] Refactor the "replica_id" in requests - Kafka - [issue]
...Today in many requests like fetch and offset we have a integer replica_id field, if the request is from a follower consumer it is the broker id from that follower replica, if it is from a re...
http://issues.apache.org/jira/browse/KAFKA-1548    Author: Guozhang Wang, 2014-08-22, 16:21
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