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Re: request.required.acks in Async Mode - Kafka - [mail # user]
...request.required.acks and producer.mode (sync or async) are orthogonalconfigs, i.e. with async mode, the producer.send() call itself will not beblocking on acks from the servers, but its asy...
   Author: Guozhang Wang, 2014-07-29, 15:10
[KAFKA-1561] Data Loss for Incremented Replica Factor and Leader Election - Kafka - [issue]
...This is reported on the mailing list (thanks to Jad).Hi,I have a test that continuously sends messages to one broker, brings upanother broker, and adds it as a replica for all partitions, wi...
http://issues.apache.org/jira/browse/KAFKA-1561    Author: Guozhang Wang, 2014-07-29, 00:22
[expand - 2 more] - Re: Gradle hanging on unit test run against ProducerFailureHangingTest->testBrokerFailure - Kafka - [mail # dev]
...Did you miss the attachment?On Fri, Jul 25, 2014 at 10:44 AM, David Corley wrote: ...
   Author: Guozhang Wang, 2014-07-25, 17:55
[KAFKA-1211] Hold the produce request with ack > 1 in purgatory until replicas' HW has larger than the produce offset - Kafka - [issue]
...Today during leader failover we will have a weakness period when the followers truncate their data before fetching from the new leader, i.e., number of in-sync replicas is just 1. If during ...
http://issues.apache.org/jira/browse/KAFKA-1211    Author: Guozhang Wang, 2014-07-25, 05:47
[KAFKA-1483] Split Brain about Leader Partitions - Kafka - [issue]
...Today in the server there are two places storing the leader partition info:1) leaderPartitions list in the ReplicaManager.2) leaderBrokerIdOpt in the Partition.1) is used as the ground truth...
http://issues.apache.org/jira/browse/KAFKA-1483    Author: Guozhang Wang, 2014-07-25, 00:51
[expand - 2 more] - Re: ConsumerConnector not processing partitions on a particular kafka broker. - Kafka - [mail # user]
...Hmm, that is a bit wired. Did you make sure the consumer logs are turned atleast on the INFO level?GuozhangOn Thu, Jul 24, 2014 at 10:05 AM, Pablo Picko  wrote: ...
   Author: Guozhang Wang, 2014-07-24, 17:22
[KAFKA-1192] Enable DumpLogSegments tool to deserialize messages - Kafka - [issue]
...Currently the DumpLogSegments tool reads the message payloads as strings by default, which will not display the messages correctly if the messages are deserialized with another class. By ena...
http://issues.apache.org/jira/browse/KAFKA-1192    Author: Guozhang Wang, 2014-07-24, 01:10
Re: num.partitions vs CreateTopicCommand.main(args) - Kafka - [mail # user]
...num.partitions is only used as a default value when the createTopic commanddoes not specify the num.partitions or it is automatically created. In yourcase since you always use its value in t...
   Author: Guozhang Wang, 2014-07-23, 23:58
[KAFKA-1462] Add new request and response formats for the new consumer and coordinator communication - Kafka - [issue]
...We need to add the request / response formats according to the new format protocol once their design is final:https://cwiki.apache.org/confluence/display/KAFKA/Kafka+0.9+Consumer+Rewrite+Des...
http://issues.apache.org/jira/browse/KAFKA-1462    Author: Guozhang Wang, 2014-07-22, 18:54
Re: how to ensure strong consistency with reasonable availability - Kafka - [mail # user]
...Hello Jiang,If some of your brokers have frequent long GC caused soft failures you cantake a look at the operational wiki page to see if that helps tuning GCsettings.https://cwiki.apache.org...
   Author: Guozhang Wang, 2014-07-22, 17:42
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