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[KAFKA-170] Support for non-blocking polling on multiple streams - Kafka - [issue]
...Currently we provide a blocking iterator in the consumer. This is a good mechanism for consuming data from a single topic, but is limited as a mechanism for polling multiple streams.For exam...
http://issues.apache.org/jira/browse/KAFKA-170    Author: Jay Kreps, 2014-05-27, 17:00
Re: New consumer APIs - Kafka - [mail # user]
...Hey Eric,Yeah this is more similar to what we currently have but with a richer apithen a simple Iterator.I think the question is how the poll() on the various streams translatesinto the ulti...
   Author: Jay Kreps, 2014-05-17, 03:14
Re: keyed-messages & de-duplication - Kafka - [mail # user]
...Hi,The compaction is done to clean-up space. It isn't done immediately onlyperiodically.I suspect the reason you see no compaction is that we never compact theactive segment of the log (the ...
   Author: Jay Kreps, 2014-05-14, 01:35
Re: 100 MB messages - Kafka - [mail # user]
...It can, but it will not perform very well. Kafka fully instantiatesmessages in memory (as a byte[] basically) so if you send a 100MB messagethe server will do a 100MB allocation to hold that...
   Author: Jay Kreps, 2014-05-14, 00:11
[KAFKA-1441] Purgatory purge causes latency spikes - Kafka - [issue]
...The request purgatory has a funky thing where it periodically loops over all watches and purges them. If you have a fair number of partitions you can accumulate lots of watches and purging t...
http://issues.apache.org/jira/browse/KAFKA-1441    Author: Jay Kreps, 2014-05-12, 17:33
Re: JAVA HEAP settings for KAFKA in production - Kafka - [mail # user]
...Hey Todd,Doc patch? :-)svn co http://svn.apache.org/repos/asf/kafka/site/081/Don't stress about html or formatting, I'm happy to do that part. I wouldlove to give people more authoritative a...
   Author: Jay Kreps, 2014-05-06, 17:32
Re: 0.7.1 Will there be any log info under poor network which packet may lose? - Kafka - [mail # user]
...TCP will attempt to resend until the packets are successfully delivered ora timeout occurs. So a packet loss should not lead to an error. The erroryou see in your log is the queue of unsent ...
   Author: Jay Kreps, 2014-05-05, 17:39
Re: 0.8.1 Java Producer API Callbacks - Kafka - [mail # user]
...This summary is correct. If you are just starting development now it isprobably reasonable to start with the new producer. We would certainlyappreciate any feedback on it.My recommendation w...
   Author: Jay Kreps, 2014-05-02, 17:08
Re: Kafka Mock - Kafka - [mail # user]
...With the new Java Kafka clients we are shipping a mock producer andconsumer. E.g.https://github.com/apache/kafka/blob/0.8.1/clients/src/main/java/org/apache/kafka/clients/producer/MockProduc...
   Author: Jay Kreps, 2014-04-30, 16:12
Re: 0.8.1 cpu usage - Kafka - [mail # user]
...Hm, this seems counter-intuitive. Running 3x per second vs 2x per secondshould not really register on a modern CPU, right? Can you try this and seeif you notice any difference?On Wed, Apr 30...
   Author: Jay Kreps, 2014-04-30, 16:00
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