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[expand - 8 more] - Re: [VOTE] 0.8.2.0 Candidate 1 - Kafka - [mail # dev]
...There seems to be an issue with the pom file for kafka_2.11-0.8.2 jar. Itreferences scala-library 2.11, which doesn't exist in maven central(2.11.1, etc do exist). This seems to be an issue ...
   Author: Jun Rao, 2015-01-19, 01:59
Re: Query regarding Kafka publishing - Kafka - [mail # user]
...Serialization does happen before partitioning. There is no particularreason for this in the old producer since serialization and partitioningare independent. In the new producer, partitionin...
   Author: Jun Rao, 2015-01-18, 22:31
[expand - 2 more] - Re: latency - how to reduce? - Kafka - [mail # user]
...You probably want to test at least the sequential write latency (withflush) on your file system.Thanks,JunOn Mon, Jan 12, 2015 at 6:08 AM, Shlomi Hazan  wrote: ...
   Author: Jun Rao, 2015-01-18, 18:55
Re: config for consumer and producer - Kafka - [mail # user]
...For the consumer group setting, you probably want to read up the doc onthis a bit (http://kafka.apache.org/documentation.html#introduction). Forthe producer, you need to know what config opt...
   Author: Jun Rao, 2015-01-18, 18:17
Re: Topic in bad state after controller to broker messaging fails - Kafka - [mail # user]
...Yes, typically, a bad topic state is the result of communication issuesbetween the controller and the broker. You may be hitting KAFKA-1738. Couldyou try 0.8.2.0 RC1 or the latest 0.8.2 bran...
   Author: Jun Rao, 2015-01-18, 18:12
Re: Offset management in multi-threaded high-level consumer - Kafka - [mail # user]
...There isn't much difference btw option 1 and 2 in terms of the offsetcommit overhead to Zookeeper. In 0.8.2, we will have a Kafka-based offsetmanagement, which is much more efficient than co...
   Author: Jun Rao, 2015-01-18, 18:02
[KAFKA-1723] make the metrics name in new producer more standard - Kafka - [issue]
...The jmx name in the new producer looks like the following:kafka.producer.myclientid:type=mytopicHowever, this can be ambiguous since we allow "." in client id and topic....
http://issues.apache.org/jira/browse/KAFKA-1723    Author: Jun Rao, 2015-01-17, 02:38
Re: Kafka Cluster Monitoring and Documentation of Internals (JMX Metrics) of Rejected Events - Kafka - [mail # user]
...You can use the DumpLogSegments tool to see if a log segment is indeedcorrupted.Thanks,JunOn Mon, Jan 12, 2015 at 2:04 PM, Bhavesh Mistry wrote: ...
   Author: Jun Rao, 2015-01-17, 02:32
[KAFKA-1868] ConsoleConsumer shouldn't override dual.commit.enabled to false if not explicitly set - Kafka - [issue]
...In ConsoleConsumer, we override dual.commit.enabled to false if not explicitly set. However, if offset.storage is set to kafka, by default, dual.commit.enabled is set to true and we shouldn'...
http://issues.apache.org/jira/browse/KAFKA-1868    Author: Jun Rao, 2015-01-16, 01:59
[expand - 2 more] - Re: 0.8.2.0 behavior change: ReplicaNotAvailableError - Kafka - [mail # dev]
...Yes, the topicMetadataResponse format is a bit weird. The main reason thatit's done that way is that we don't want to return null replica objects tothe client. An alternative is to have the ...
   Author: Jun Rao, 2015-01-15, 05:37
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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