Your email address will not be published. Kafka instances do not support resetting the consumer offset online. The ConsumerSeekAwarehas three methods which are: According to your need, you can write your implementation in one or all three of the above methods. design patterns Updating values of ENUM in java, Docker Desktop stopped message after installation, version control git push to specific branch. Yet another cryptocurrency that is super popular. But there might be other use for that as well. Guys I am in a little confusion with the kafka consumer property , auto.offset.reset . The technical storage or access that is used exclusively for anonymous statistical purposes. The auto offset reset consumer configuration defines how a consumer should behave when consuming from a topic partition when there is no initial offset. Sure. We'd also check if the partition is <= the number of partitions informed in the RetryTopicConfiguration to make sure we don't try to assign an inexistent partition. In any case, I agree, there should be no repositioning of the retry topics because if the main listener fails after a rewind we'd get a new failed record in the retry topic; we don't want to see already processed failed records there. Thank you very much for your feedback. So, the next time you run the application the consumer polls data from the uncommited offset. I also wanted to ask about Unit testing - I found this article to be very helpful, but as the article mentions, I wouldn't want to use the CountDownLatch in production (I also want to be principled and not write code that is used just for testing). In what version(s) of Spring for Apache Kafka are you seeing this issue? I'll open a PR and we can see if there's anything else left. Then the container stopping error handler might suit your needs. You can set a ConsumerRebalanceListener for the kafka consumer while you subscribing to some topics,in which you can get the lastest offset of each partition by KafkaConsumer.endOffsets() method, and set this to consumer by KafkaConsumer.seek() method ,like this: you can use partitionOffsets annotation to start with exact offset,for example: Spring Kafka - How to reset offset to latest with a group id? spring Because I didn't saw any example of this, I'm gonna explain how I did here. @garyrussell the enable.auto.commit is set to false and I am manually commiting the offsets via Acknowledgement.acknowledge() . For me, I needed this for troubleshooting purposes to know why a certain message in the pipeline was failing to get processed. If there is another listener consuming from 1 and 3, he'd get his own retry containers for those partitions too. Have a question about this project? We will continue working to improve the documentation. But that's something I can easily fix as part of this PR. https://docs.spring.io/spring-kafka/api/org/springframework/kafka/listener/ConsumerSeekAware.html, http://blog.empeccableweb.com/wp/2016/11/30/manual-offsets-in-kafka-consumers-example/, Getting started with Spring Data Redis with Kotlin, Getting started with Spring Data Elasticsearch, Getting started with Spring Boot on OpenShift, Configure SSH key-based authentication on Raspberry Pi, Test Spring Kafka consumer and producer with EmbeddedKafka, High-performance data fetching using Spring Data JPA Stream, How to fix grub/i386-pc/normal.mod not found, Control threads number in Java parallel stream. @SyedMuhammadSufyian It's a bit of an odd design (creating a new ExecutorService for each batch). You are also not waiting for the tasks to complete before committing the offsets; so it's not clear exactly what you are trying to do. However I see you have raised a GH issue already (request -> CompletableFuture.supplyAsync(() -> clusterBuilderService.run(request), executorService)), https://docs.spring.io/spring-kafka/docs/2.2.5.RELEASE/reference/#seek, https://docs.spring.io/spring-kafka/docs/2.2.5.RELEASE/reference/#seek-to-current, https://docs.spring.io/spring-kafka/docs/2.2.5.RELEASE/reference/#stateful-retry, https://github.com/spring-projects/spring-kafka/issues, https://stackoverflow.com/questions/52783066/how-to-write-unit-test-for-kafkalistener/52784139#52784139. What version are you using? (We used postman (newman) for our HTTP interfaces). Geeky Hacker wallet number: 0x40146D985b995E5bB5b2A7FDc618db689a811DCB. There's also an issue with the retry topics when more than one @KafkaListener is used for the same topic, perhaps with different partition assignments, is that a common use for manual assignments? Team, I'm working on kafka with spring boot but facing few issues related to configuration. Sign in Hello everyone. How to seek Kafka offset in Spring Kafka Listener. How to store decimal values in SQL Server. Please help. The text was updated successfully, but these errors were encountered: Thanks again for reporting @ashishqcs, this should be fixed soon and released in the upcoming 2.8.5 version which is out on April 18th. Head over to Lydtech Consulting at lydtechconsulting.com for articles by the team on all kinds of interesting areas of software development. To know which class is your Spring Kafka Listener, you might need to search your project for @KafkaListenerto find it. Are you sure that you have both brokers available on those. This way we wont have async auto-commits based on some commit interval. Sometimes it happens that you need to change the Kafka offset in the application manually to point to a specific offset. Not sure if we should go there though. Before resetting, stop the client for which the offset is to be reset.> After a client is stopped, the server considers the client offline only after the time period specified in ConsumerConfig.SESSION_TIMEOUT_MS_CONFIG (1000 ms by default). Perhaps he can explain the use case. https://docs.spring.io/spring-boot/docs/1.5.7.RELEASE/reference/htmlsingle/#boot-features-kafka-extra-props, python multiple key value pairs in dict comprehension. In my case, I prefer to just only implement onPartitionsAssignedwhich as stated earlier will trigger on the application startup. Modern clients don't need zookeeper addresses. I recently read about PepperBox but have yet to play with it). So that seems to be alright - the feature will work as you described, with each retry topic container being assigned to the same partitions as the main topic one, only without the offset. Geeky Hacker wallet number: 0x1f98767fB7c51efc35C313B0015C6aB453D4ED31. I understand that those Kafka brokers and zookeeper are a part of the whole solution, but just source code might not help to determine the issue, you need to start in determining if those Kafka services work without your project first of all, and then jump into the code for logic implementation, although it must begin with a simple connection from your project, So, what you are asking is more about the target product where indeed all those testing tools might be helpful, but this is already far beyond responsibilities in this channel, It should indeed start where it left off (as long as the offsets are committed properly). hiI got a problem when I want to intercept the message using ChannelInterceptorIt work while I use SubscribableChannel type as input channel@Input(MESSAGE_EVENTS_IN)SubscribableChannel input();but if I use KStream as input channel and I cannot intercept the message in ChannelInterceptor's preSend method. After all the messages were processed , I scaled down the pods to 0 and then scaled up the pod again with the same config i.e groupID=ph and auto.offset.reset=earliest. No; that property only applies when there is no current offset for the consumer group; so something else is going on. We use cookies to optimize our website and our service. During the processing , the current offset (as determined by consumer-groups.sh) was increasing given the groupId "ph". When we get 3 expected records we exit. CodeIgniter - Call method inside a model? How do I put variable values into a text string in MATLAB? BAT is a coin that is used by Brave Browser which is getting more popularity day by day. You can donate us in Ethereum. The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user. How to show git blame in Visual Studio 2013? In the future we might also consider having @TopicPartition within the @RetryableTopic annotation, and enabling having more than one container per topic, but doesn't seem like something we should do at the moment. How do you extract a column from a multi-dimensional array? Some of my colleagues argue that unit tests would be sufficient, but I'd still like your opinions on the matter, as well as automated performance testing (we use JMeter. How can I pass a Bitmap object from one activity to another, Angular 2: formGroup expects a FormGroup instance. However my doubt is , when I scaled down the pods to zero instance and then scaled up again , when scaling up it looks like the consumer may has forcefully reset the offset of "ph" group to 0 as the auto.offset.reset is set to earliest. Please try again later. @garyrussell, please help me out here if you can - I'm not that familiar with using manual assignments. feedback as is. Successfully merging a pull request may close this issue. With this main topic listener as well as DLT topic listener receive same event (since there is one retry topic - main listener receives same event 2 times and 1 by dlt listener as well - total 3 copies of same event). Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Resetting consumer group offset to the specified position. Which of the following issues have you encountered? POST /v2/{project_id}/instances/{instance_id}/management/groups/{group}/reset-message-offset. How can I import string from Excel into MATLAB? "Connection to node 0 could not be established. If this offset is later than the current largest offset, the offset will be reset to the latest offset. All rights reserved. If the specified number of partitions for the retry topic is smaller than what's specified, we can just set that to partition 0 for example. @Input(MESSAGE_EVENTS_IN)KStream input(); is there any suggestion to intercept the KStream message and add some common header? One example of this implementation is like follow: The unbeatable, the father and the king of kings, Bitcoin! Please, replicate it there and we will try to answer. There is no auto-configuration for Zookeeper, so, those props are custom and not handled by Boot, Right, that's why I said that doesn't look like Spring issue, There just might be no connection for one of those brokers. suggestions. https://www.huaweicloud.com/intl/zh-cn. WooCommerce : Add custom Metabox to admin order page, Microsoft Visual C++ 14.0 is required (Unable to find vcvarsall.bat). It seems ChannelInterceptor cannot intercept message type of KStream. For any further questions, feel free to contact us through the chatbot. And our one might be fully different from yours. Resetting consumer group offset to the specified time. privacy statement. What are the benefits of setting objects to "Nothing". You signed in with another tab or window. Actually I want to pause the consumer till the downstream API comes up. Problem using $or for an update at MongoDB, Error: the update operation document must contain atomic operators. The only issue is we have to set one of the retryable topics to autocreate=false. It's not clear to me why @ashishqcs sets an initial position for the manually assigned topic, as well as using retryable topic; that logic is usually used with compacted topics (always read the full log). @TopicPartition(topic = "products", partitionOffsets = @PartitionOffset(partition = "0", initialOffset = "0")). Another take on this would be ignoring manual assignments for the retry topics, and also filtering out any duplicated @KafkaListener for the same topics in retry topic logic - then we'd have a single coordinated consumer group per retry topic independently of how many @KafkaListener with manual assignments the user declares.