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[KAFKA-391] Producer request and response classes should use maps - Kafka - [issue]
...Producer response contains two arrays of error codes and offsets - the ordering in these arrays correspond to the flattened ordering of the request arrays.It would be better to switch to map...
http://issues.apache.org/jira/browse/KAFKA-391    Author: Joel Koshy, 2014-11-07, 06:57
[expand - 1 more] - Re: queued.max.message.chunks impact and consumer tuning - Kafka - [mail # dev]
...I actually meant to say that you typically don't need to bump up thequeued chunk setting - you can profile your consumer to see ifsignificant time is being spent waiting on dequeuing from th...
   Author: Joel Koshy, 2014-11-04, 19:51
Re: Tuning replication - Kafka - [mail # user]
...Ops-experts can share more details but here are some comments:Since you also have to account for the NIC utilization by replicafetches it is better to split a heavy topic into many partition...
   Author: Joel Koshy, 2014-11-04, 18:09
Re: [ANNOUNCEMENT] Apache Kafka 0.8.2-beta Released - Kafka - [mail # user]
...Yes there are some changes but will be checked-in prior to the fullrelease:https://issues.apache.org/jira/browse/KAFKA-1728JoelOn Mon, Nov 03, 2014 at 04:46:12PM -0500, Jason Rosenberg wrote...
   Author: Joel Koshy, 2014-11-03, 22:14
Re: Dynamically adding Kafka brokers - Kafka - [mail # user]
...KAFKA-1070 will help with this and is pending a review.On Mon, Nov 03, 2014 at 05:03:20PM -0500, Otis Gospodnetic wrote: ...
   Author: Joel Koshy, 2014-11-03, 22:12
Re: MBeans, dashes, underscores, and KAFKA-1481 - Kafka - [mail # dev]
...That sounds good, although is that the only change (sorry I have notdone a careful review of that patch and would like to before it getschecked in).On Fri, Oct 31, 2014 at 10:42:13AM -0700, ...
   Author: Joel Koshy, 2014-10-31, 17:49
[expand - 3 more] - Re: partitions stealing & balancing consumer threads across servers - Kafka - [mail # user]
...In your instance if you have four JVMs (i.e., consumer processes), sixthreads per consumer process and 12 partitions, then each thread wouldonly get one partition but the first two processes...
   Author: Joel Koshy, 2014-10-31, 17:33
[KAFKA-1647] Replication offset checkpoints (high water marks) can be lost on hard kills and restarts - Kafka - [issue]
...We ran into this scenario recently in a production environment. This can happen when enough brokers in a cluster are taken down. i.e., a rolling bounce done properly should not cause this is...
http://issues.apache.org/jira/browse/KAFKA-1647    Author: Joel Koshy, 2014-10-30, 23:33
[expand - 2 more] - Re: Kafka producer error - Kafka - [mail # user]
...I see - yes that is a limitation. You could get around that by doingsomething similar - i.e., use reflection to create the MyDeciderThingyobject. Or you could check in the partition call if ...
   Author: Joel Koshy, 2014-10-30, 19:00
Re: SimpleConsumer fetching the last read offset - Kafka - [mail # user]
...That is something that you will need to manage manually with theSimpleConsumer. You can store it in ZK (manually) or afile/database/other. You can also store it in Kafka if you send anOffset...
   Author: Joel Koshy, 2014-10-30, 18:41
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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