Re: How does one deploy to consumers without causing re-balancing for real time use case?

2017-02-17 Thread Praveen
Hey Onur, I was just watching your talk on rebalancing from last year - https://www.youtube.com/watch?v=QaeXDh12EhE Nice talk!. I think I have an idea as to why it takes 1 hr in my case based on the talk in the video. In my case with 32 boxes / consumers from the same group, I believe the current

Re: Role of Zookeeper in Kafka Rest Proxy

2017-02-17 Thread Roger Hoover
Yes On Fri, Feb 17, 2017 at 10:06 PM, Jeff Widman wrote: > Will this new release use a new consumer? > > On Feb 16, 2017 11:33 PM, wrote: > > > You can't integrate 3.1.1 REST Proxy with a secure cluster because it > uses > > the old consumer API (hence zookeeper dependency). The 3.2 REST Proxy

Re: Role of Zookeeper in Kafka Rest Proxy

2017-02-17 Thread Jeff Widman
Will this new release use a new consumer? On Feb 16, 2017 11:33 PM, wrote: > You can't integrate 3.1.1 REST Proxy with a secure cluster because it uses > the old consumer API (hence zookeeper dependency). The 3.2 REST Proxy will > allow you to integrate with a secure cluster because it is update

Re: Need help in understanding bunch of rocksdb errors on kafka_2.10-0.10.1.1

2017-02-17 Thread Sachin Mittal
Hi, Regrading 0. "frequent rebalance and dying of threads": did you see any warn / error log entries or exceptions when threads die or rebalance is triggered? The exception we get is CommitFailedException and then on partition revoke also it throws CommitFailedException and stream thread is killed

Re: Kafka exception

2017-02-17 Thread Colin McCabe
Can you reproduce this with the latest version of Kafka? best, Colin On Wed, Feb 15, 2017, at 22:29, 揣立武 wrote: > > Hi,all! Our program uses the high level consumer api(the version is > 0.8.x). Sometimes the program will throw an exception in the 42th row in > kafka.utils.IteratorTemplate class

Re: Need help in understanding bunch of rocksdb errors on kafka_2.10-0.10.1.1

2017-02-17 Thread Guozhang Wang
Hi Sachin, 0. "frequent rebalance and dying of threads": did you see any warn / error log entries or exceptions when threads die or rebalance is triggered? My guess is that you are likely hitting this issue: https://issues.apache.o rg/jira/browse/KAFKA-3775 The scenario is that, when you are sta

Re: Reg: Kafka HDFS Connector with (HDFS SSL enabled)

2017-02-17 Thread Colin McCabe
Hi, Just to be clear, HDFS doesn't use HTTP or HTTPS as its primary transport mechanism. Instead, HDFS uses the Hadoop RPC transport mechanism. So in general, it should not be necessary to configure SSL to connect a client to HDFS. HDFS does "support SSL" in the sense that the HDFS web UI can b

Re: Newbie question: kerberos with Kafka and zookeeper

2017-02-17 Thread Stephane Maarek
Hi It seems that your keytab doesn't have the principal you configured your "client" section to use. Post your jaas here if you want further help but basically you should be able to do kinit -V -k -t On 18 Feb. 2017 3:56 am, "Raghav" wrote: Hi I am trying to setup a simple setup with one K

Re: KTable TTL

2017-02-17 Thread Guozhang Wang
Hello Ara, I'm wondering what this KTable is used for (e.g. join, aggregation, etc)? And is the usage of TTL is because your computational logic can safely ignore key-value pairs that has existed for 24 hours, or is it purely for bounding the state store space usage (for this end, what is your cur

Kafka 0.9.0.1 Direct buffer memory OOM

2017-02-17 Thread vinay gupta
Hi Kafka Users, We are using kafka 0.9.0.1 and frequently we have seen below exception which causes the broker to die.We even increased the MaxDirectMemory to 1G but still see this.  2017-02-16 00:55:57,750] ERROR Processor got uncaught exception. (kafka.network.Processor) java.lang.OutOfMemoryE

Re: log.flush.interval.messages setting of Kafka 0.9.0.0

2017-02-17 Thread Colin McCabe
Hi, Based on a quick look at the code, the log.flush.interval.messages setting affects how frequently we call fsync on the underlying filesystem. As you mentioned, by default this is set to Long.MAX_VALUE, which effectively disables it. Keep in mind that the underlying operating system will flus

Newbie question: kerberos with Kafka and zookeeper

2017-02-17 Thread Raghav
Hi I am trying to setup a simple setup with one Kafka broker, and zookeeper on the same VM. One producer and one consumer on each VM. I have setup a KDC on cents VM. I am trying to following this guide: http://docs.confluent.io/2.0.0/kafka/sasl.html#kerberos When I start Kafka, it errors out wit

conflicts between consumer groups? seeing many duplicate records

2017-02-17 Thread Jon Yeargers
Is it possible that using the same group name for two topics could cause a conflict? I have a situation where Im seeing vast numbers of records (more than 2x) get duplicated in a topic. I was looking at consumer lag using 'kafka-consumer-groups ... --new-consumer' and noticed that I had another ap

Re: System went OutOfMemory when running Kafka-Streaming

2017-02-17 Thread Eno Thereska
Hi Deepak, Could you tell us a bit more on what your app is doing (e.g., aggregates, or joins)? Also which version of Kafka are you using? Have you changed any default configs? Thanks Eno > On 17 Feb 2017, at 05:30, Deepak Pengoria wrote: > > Hi, > I ran my application on AWS machine having

Re: KIP-122: Add a tool to Reset Consumer Group Offsets

2017-02-17 Thread Jorge Esteban Quilcate Otoya
Hi, according to the feedback, I've updated the KIP: - We have added and ordered the scenarios, scopes and executions of the Reset Offset tool. - Consider it as an extension to the current `ConsumerGroupCommand` tool - Execution will be possible without generating JSON files. https://cwiki.apach

Re: Need help in understanding bunch of rocksdb errors on kafka_2.10-0.10.1.1

2017-02-17 Thread Sachin Mittal
Hi, I am now starting with rocksdb monitoring and comparing 2 identical streams with 2 identical input topics. Case1 Single partition topic with single thread streams apps running 0.10.1.1 This case is pretty stable with hardly any cpu wait time noticed. Case 2 12 partition topic with 3 instances

System went OutOfMemory when running Kafka-Streaming

2017-02-17 Thread Deepak Pengoria
Hi, I ran my application on AWS machine having 32GB ram. This application is written in Java using Kafka-Streaming low level api. When I ran it for 72 hours or more and load (messages) are keep on pumping to kafka-topic then entire memory i.e. 32 GB of aws machine gets exhausted. While I ran my jav

Re: Role of Zookeeper in Kafka Rest Proxy

2017-02-17 Thread Stephane Maarek
I look forward to that release ! Thanks Hans On 17 Feb. 2017 6:33 pm, wrote: > You can't integrate 3.1.1 REST Proxy with a secure cluster because it uses > the old consumer API (hence zookeeper dependency). The 3.2 REST Proxy will > allow you to integrate with a secure cluster because it is upda