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[KAFKA-527] Compression support does numerous byte copies - Kafka - [issue]
...The data path for compressing or decompressing messages is extremely inefficient. We do something like 7  complete copies of the data, often for simple things like adding a 4 byte size ...
http://issues.apache.org/jira/browse/KAFKA-527    Author: Jay Kreps, 2015-03-29, 23:53
[expand - 2 more] - Re: Metrics package discussion - Kafka - [mail # dev]
...I think Joel's summary is good.I'll add a few more points:As discussed memory matter a lot if we want to be able to give percentilesat the client or topic level, in which case we will have t...
   Author: Jay Kreps, 2015-03-28, 20:35
[KAFKA-2063] Bound fetch response size - Kafka - [issue]
...Currently the only bound on the fetch response size is max.partition.fetch.bytes * num_partitions. There are two problems:1. First this bound is often large. You may chose max.partition.fetc...
http://issues.apache.org/jira/browse/KAFKA-2063    Author: Jay Kreps, 2015-03-28, 16:18
[expand - 1 more] - Re: [VOTE] KIP-15 Add a close method with timeout to new producer - Kafka - [mail # dev]
...+1Thanks for your patience Jiangjie!-JayOn Fri, Mar 27, 2015 at 11:48 AM, Jiangjie Qin wrote: ...
   Author: Jay Kreps, 2015-03-27, 20:21
[expand - 3 more] - Re: [VOTE] KIP-15 add a close with timeout to new producer - Kafka - [mail # dev]
...Hmm, but won't the impact of throwing the exception just be killing thesender thread? i.e. the user won't see it unless they check the logs, whichis the same as logging the error.Is there a ...
   Author: Jay Kreps, 2015-03-26, 21:17
[KAFKA-1684] Implement TLS/SSL authentication - Kafka - [issue]
...Add an SSL port to the configuration and advertise this as part of the metadata request.If the SSL port is configured the socket server will need to add a second Acceptor thread to listen on...
http://issues.apache.org/jira/browse/KAFKA-1684    Author: Jay Kreps, 2015-03-24, 18:30
[expand - 3 more] - Re: [Discussion] Using Client Requests and Responses in Server - Kafka - [mail # dev]
...Ack, yeah, forgot about that.It's not just a difference of wrappers. The server side actually sends thebytes lazily using FileChannel.transferTo. We need to make it possible tocarry over tha...
   Author: Jay Kreps, 2015-03-23, 05:24
[expand - 4 more] - Re: Kafka 0.9 consumer API - Kafka - [mail # user]
...Zijing, the new consumer will be in the next release. We don't have a harddate for this yet.Rajiv, I'm game if we can show a >= 20% performance improvement. Itcertainly could be an improv...
   Author: Jay Kreps, 2015-03-22, 14:57
[expand - 5 more] - Re: [DISCUSSION] KIP-15 close(timeout) for producer - Kafka - [mail # dev]
...Yeah guys, I think this is one where the cure is worse than the disease.Let's just have the two close methods, that is confusing enough. Adding athird won't help. I understand that having a ...
   Author: Jay Kreps, 2015-03-19, 22:30
[KAFKA-1912] Create a simple request re-routing facility - Kafka - [issue]
...We are accumulating a lot of requests that have to be directed to the correct server. This makes sense for high volume produce or fetch requests. But it is silly to put the extra burden on t...
http://issues.apache.org/jira/browse/KAFKA-1912    Author: Jay Kreps, 2015-03-19, 16:15
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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