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[KAFKA-1293] Mirror maker housecleaning - Kafka - [issue]
...Mirror maker uses it's own convention for command-line arguments, e.g. --num.producers, where everywhere else follows the unix convention like --num-producers. This is annoying because when ...
http://issues.apache.org/jira/browse/KAFKA-1293    Author: Jay Kreps, 2015-04-26, 16:47
Re: New and old producers partition messages differently - Kafka - [mail # user]
...This was actually intentional.The problem with relying on hashCode is that(1) it is often a very bad hash function,(2) it is not guaranteed to be consistent from run to run (i.e. if youresta...
   Author: Jay Kreps, 2015-04-26, 14:59
[expand - 2 more] - Re: New Java Producer: Single Producer vs multiple Producers - Kafka - [mail # user]
...That should work. I recommend using the performance tool cited in the bloglinked from the "performance" page of the website. That tool is moreaccurate and uses the new producer.On Fri, Apr 2...
   Author: Jay Kreps, 2015-04-24, 22:25
[expand - 18 more] - Re: [KIP-DISCUSSION] KIP-13 Quotas - Kafka - [mail # dev]
...Hey Jun/Joel,Yeah we will definitely want to quota non-produce/consume requests.Especially offset commit and any other requests the consumer can triggercould easily get invoked in a tight lo...
   Author: Jay Kreps, 2015-04-24, 22:22
[expand - 1 more] - Re: [KIP-DISCUSSION] KIP-22 Expose a Partitioner interface in the new producer - Kafka - [mail # dev]
...Hey Sriharsha,Great, thanks!For 4:Yeah the use case for init and close is making use of any kind of metadata.An example of this would be if you are trying to do range partitioning youneed to...
   Author: Jay Kreps, 2015-04-23, 23:41
[expand - 2 more] - Re: [DISCUSS] KIP 20 Enable log preallocate to improve consume performance under windows and some old Linux file system - Kafka - [mail # dev]
...Yeah if we understand the optimal policy for a config we always want to setit automatically. In this case I don't think we do yet, but down the roadthat could be nice. I think for now we sho...
   Author: Jay Kreps, 2015-04-23, 16:53
[KAFKA-2091] Expose a Partitioner interface in the new producer - Kafka - [issue]
...In the new producer you can pass in a key or hard code the partition as part of ProducerRecord.Internally we are using a classclass Partitioner {    public int partition(Strin...
http://issues.apache.org/jira/browse/KAFKA-2091    Author: Jay Kreps, 2015-04-23, 14:56
[KAFKA-1688] Add authorization interface and naive implementation - Kafka - [issue]
...Add a PermissionManager interface as described here:https://cwiki.apache.org/confluence/display/KAFKA/Security(possibly there is a better name?)Implement calls to the PermissionsManager in K...
http://issues.apache.org/jira/browse/KAFKA-1688    Author: Jay Kreps, 2015-04-22, 18:40
Re: [DISCUSS] New consumer offset commit API - Kafka - [mail # dev]
...I second Guozhang's proposal. I do think we need the callback. The currentstate is that for async commits you actually don't know if it succeeded.However there is a totally valid case where ...
   Author: Jay Kreps, 2015-04-22, 18:21
[expand - 2 more] - Re: [DISCUSS] KIP-11- Authorization design for kafka security - Kafka - [mail # dev]
...Following up on the KIP discussion. Two options for authorizing consumersto read topic "t" as part of group "g":1. READ permission on resource /topic/t2. READ permission on resource /topic/t...
   Author: Jay Kreps, 2015-04-21, 23:33
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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