Producer TimeoutException while accessing with domain and L3 Load balancer.

2017-11-28 Thread Madhukar Bharti
Hi, We have Kafka cluster with three brokers(0.10.0.1). We are accessing this cluster using domain name say common.test. Also, L3 load balancer has been configured for this domain name, so that request will be passed to brokers in RR way. The Producer has been implemented in java client(KafkaProd

Multiple brokers - do they share the load?

2017-11-28 Thread Skip Montanaro
Apologies for the rather long set-up... I've been using Kafka as a client for a few months now. The setup I've been using has three brokers on separate servers, all listening to port 9092. My consumers always connected to server1:9092. I've ignored server2 and server3. Now I'm starting to mess ar

Re: Multiple brokers - do they share the load?

2017-11-28 Thread Svante Karlsson
You are connecting to a single seed node - your kafka library will then under the hood connect to the partition leaders for each partition you subscribe or post to. The load is not different compared to if you gave all nodes as connect parameter. However if your seed node crashes then your client

Re: GDPR appliance

2017-11-28 Thread Ben Stopford
You should also be able to manage this with a compacted topic. If you give each message a unique key you'd then be able to delete, or overwrite specific records. Kafka will delete them from disk when compaction runs. If you need to partition for ordering purposes you'd need to use a custom partitio

Fwd: Fwd: suddenly kafka cluster shutdown

2017-11-28 Thread Jose Raul Perez Rodriguez
Hi kafka user and devs, I have a kafka cluster on AWS EMR instances using de zookeeper that cames with EMR, The problem is that after some days running and working good, the cluster shutdown, every node shutdown showing logs messages like the one below. That is happening in the las two month 3

RE: Multiple brokers - do they share the load?

2017-11-28 Thread Tauzell, Dave
If you create a partitioned topic with at least 3 partitions then you will see your client connect to all of the brokers. The client decides which partition a message should go to and then sends it directly to the broker that is the leader for that partition. If you have replicated topics, the

Re: Upgrading producers to 1.0

2017-11-28 Thread Brian Cottingham
On 11/27/17, 8:36 PM, "Matthias J. Sax" wrote: Not sure were you exactly copied this. However, second paragraph here https://kafka.apache.org/documentation/#upgrade_10_2_0 explains: > Starting with version 0.10.2, Java clients (producer and consumer) have acquired the ability to

Apache Kafka with NAND Flash Memory and small hardware

2017-11-28 Thread Haenel, Angelika
Hi there, I would like to know if it is a bad idea to use Apache Kafka, -Zookeeper and -NiFi on small hardware like a box pc with: CPU: Celeron J1900 or Atom E3845 RAM: 4 GB SSD: 32 GB How often will Apache Kafka write to disc, cause the write cycles are limited on a SSD? If there is no probl

Lots of warns about LogCleaningPaused during partition reassignment

2017-11-28 Thread BGCH
Hello! We tried to migrate data from 0.10.2.1 cluster to 0.11.0.2. Firstly we spread topics to both clusters. There were lots of problems and restarts of some nodes of both clusters (we probably shouldn't do that). All this ended up with a state when we had lots of exceptions from 2 nodes of

Re: Upgrading producers to 1.0

2017-11-28 Thread Matthias J. Sax
Upgrading brokers without client was always supported :) Since 0.10.2, it also works the other way round. -Matthias On 11/28/17 7:33 AM, Brian Cottingham wrote: > On 11/27/17, 8:36 PM, "Matthias J. Sax" wrote: > > Not sure were you exactly copied this. However, second paragraph here >

Re: Upgrading producers to 1.0

2017-11-28 Thread Brian Cottingham
Excellent, thanks very much for the help! On 11/28/17, 11:43 AM, "Matthias J. Sax" wrote: Upgrading brokers without client was always supported :) Since 0.10.2, it also works the other way round. -Matthias On 11/28/17 7:33 AM, Brian Cottingham wrote: > On

Re: Exception in rebalancing | Kafka 1.0.0

2017-11-28 Thread Guozhang Wang
Sameer, Thanks for reporting, it looks similar to the ticket we have resolved some time ago (https://issues.apache.org/jira/browse/KAFKA-5154), note that we added some check to avoid NPE but instead throws a more meaningful exception message, but the root cause maybe the same. If your Kafka Strea

Re: [ANNOUNCE] New committer: Onur Karaman

2017-11-28 Thread Jason Gustafson
Sorry for being late to the party, but congratulations Onur! On Wed, Nov 8, 2017 at 1:47 AM, Sandeep Nemuri wrote: > Congratulations Onur!! > > On Wed, Nov 8, 2017 at 9:19 AM, UMESH CHAUDHARY > wrote: > > > Congratulations Onur! > > > > On Tue, 7 Nov 2017 at 21:44 Jun Rao wrote: > > > > > Af

KAFKA-5413 and 0.10.x

2017-11-28 Thread Philippe Laflamme
Hi, We've recently hit an issue that is marked as "resolved" in the 0.10 branch, but has never been released[1]. There is no known workaround for the problem. Upgrading our cluster to a 0.11 version is certainly an option, but is a risky one given that it could introduce move bugs (especially sin

Managing broker rolls?

2017-11-28 Thread Matt Farmer
Hey all, So, I'm curious to hear how others have solved this problem. We've got quite a few brokers and rolling all of them to pick up new configuration (which consists of triggering a clean shutdown, then restarting the service and waiting for replication to catch up before moving on) ultimately

kafka compacted topic

2017-11-28 Thread Kane Kim
How does kafka log compaction work? Does it compact all of the log files periodically against new changes?

Re: kafka compacted topic

2017-11-28 Thread Jakub Scholz
There is quite a nice section on this in the documentation - http://kafka.apache.org/documentation/#compaction ... I think it should answer your questions. On Wed, Nov 29, 2017 at 7:19 AM, Kane Kim wrote: > How does kafka log compaction work? > Does it compact all of the log files periodically a