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[expand - 1 more] - Re: New and old producers partition messages differently - Kafka - [mail # user]
...Yeah I agree we could have handled this better. I think the story we havenow is that you can override it using the partition argument in theproducer (and when we get the patch for pluggable ...
   Author: Jay Kreps, 2015-04-27, 18:24
[expand - 3 more] - Re: New Java Producer: Single Producer vs multiple Producers - Kafka - [mail # user]
...Hey Jiangjie,Yeah, not sure the bottleneck. It maybe the sender or lock contention onthe writer threads. You could use top or one of the java tools to check outthe per-thread cpu usage.The b...
   Author: Jay Kreps, 2015-04-27, 18:16
[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
[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
Re: [DISCUSS] KIP-12 - Kafka Sasl/Kerberos implementation - Kafka - [mail # dev]
...Hey Sriharsha,Thanks for the excellent write-up.Couple of minor questions:1. Isn't the blocking handshake going to be a performance concern? Can wedo the handshake non-blocking instead? If a...
   Author: Jay Kreps, 2015-04-21, 21:51
[expand - 12 more] - Re: [DISCUSS] KIP-4 - Command line and centralized administrative operations (Thread 2) - Kafka - [mail # dev]
...Hey Andrii, thanks for all the hard work on this, it has come a long way.A couple questions and comments on this.For the errors, can we do the following:1. Remove IllegalArgument from the na...
   Author: Jay Kreps, 2015-04-21, 21:37
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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