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[KAFKA-4084] automated leader rebalance causes replication downtime for clusters with too many partitions - Kafka - [issue]
...If you enable auto.leader.rebalance.enable (which is on by default), and you have a cluster with many partitions, there is a severe amount of replication downtime following a restart. This c...    Author: Tom Crayford , 2020-04-02, 10:18
[KAFKA-3955] Kafka log recovery doesn't truncate logs on non-monotonic offsets, leading to failed broker boot - Kafka - [issue]
...Hi,I've found a bug impacting kafka brokers on startup after an unclean shutdown. If a log segment is corrupt and has non-monotonic offsets (see the appendix of this bug for a sample output ...    Author: Tom Crayford , 2020-03-14, 11:21
[KAFKA-5973] ShutdownableThread catching errors can lead to partial hard to diagnose broker failure - Kafka - [issue]
...When any kafka broker ShutdownableThread subclasses crashes due to anuncaught exception, the broker is left running in a very weird/bad state with somethreads not running, but potentially th...    Author: Tom Crayford , 2018-06-15, 06:24
Custer startup order WRT Zookeeper Quorum for Kafka - Kafka - [mail # user]
...You'll need a ZK quorum established before brokers boot, for sure.On Thu, Jul 20, 2017 at 12:53 PM, M. Manna  wrote:> Hello,>> This might be too obvious for some people, but ju...
   Author: Tom Crayford , 2017-07-20, 12:36
Kafka compatibility matrix needed - Kafka - [mail # user]
...All broker versions support all older client versionsOn Tue, Jul 18, 2017 at 10:15 AM, Sachin Mittal  wrote:> Hi,> This gives me some information but still not the complete pictur...
   Author: Tom Crayford , 2017-07-18, 09:56
Logs truncated at o'clock - Kafka - [mail # user]
...Hi,Which folder are you storing kafka's data in? By default that's /tmp, whichmight be getting wiped by your OS.ThanksTom CrayfordHeroku KafkaOn Fri, Jul 14, 2017 at 11:50 AM, [EMAIL PROTECT...
   Author: Tom Crayford , 2017-07-14, 11:31
Is Kafka client backward compatible - Kafka - [mail # dev]
...Kafka promises one thing and one thing only for backwards compatability,which is that brokers with newer versions will always support olderclients. The inverse: old brokers with new clients ...
   Author: Tom Crayford , 2017-06-28, 14:21
[VOTE] RC2 - Kafka - [mail # user]
...Hi,As previously, Heroku has been doing performance testing of RC2.Now that the tool supports it, we've even beendoing testing with the new transactional/id...
   Author: Tom Crayford , 2017-06-23, 19:13
[expand - 3 more] - [VOTE] RC1 - Kafka - [mail # user]
...That's fair, and nice find with the transaction performance improvement!Once the RC is out, we'll do a final round of performance testing with thenew ProducerPerformance changes enabled.I th...
   Author: Tom Crayford , 2017-06-22, 16:05
[expand - 1 more] - [VOTE] RC0 - Kafka - [mail # dev]
...Hi Ismal,Sure. It's a standard heroku plan, the `extended-2`, which has 8 brokers.We did several rounds of performance testing, some with low numbers ofpartitions and topics (16 partitions w...
   Author: Tom Crayford , 2017-06-22, 15:21