How to clear kafka lag. Oct 8, 2018 · Facing issue with kafka consumer lag.

How to clear kafka lag ms 60000 DEFAULT_CONFIG flush. "Kafka Streams, Apache Kafka’s stream processing library, allows developers to build sophisticated stateful stream processing applications which you can deploy in an environment of your choice. If this logic modified based on consumer application needs, it would be ideal if that the same data set can be reprocessed and fed to it so that those changes can take effect 2) Our application relies on the kafka-connector to continue doing its work when it is resumed. Consumer lag details are displayed, including: Total messages behind and the measured interval. To enable compression in a Kafka producer, you can set the compression. But merely adding consumers without adding partitions may result in idle consumers. json We have been trying to create a kafka consumer that tries to consume data about 2. Nov 17, 2023 · Step 1: Identify the current position of the Kafka Offset. sh — bootstrap-server kafka-server:9092 — describe -group consumer-group-name | awk ‘{sum += $5} END {print sum}’ Share Follow Jul 26, 2023 · SUMMARY ===== NAME blog-dummy PARTITIONS 5 REPLICAS 1 CONFIGS ===== KEY VALUE SOURCE cleanup. sh - bootstrap-server localhost:8080 - describe - group console-consumer-12342 Nov 1, 2023 · I am trying to expose the Prometheus metric that shows LAG value in each Kafka topic. You can track this using Kafka’s built-in command-line tools: bin/kafka-consumer-groups. Apache Kafka v 2. Aug 7, 2024 · Kafka lag, the delay between message production and consumption, significantly impacts system performance. I have setup a Kafka Cluster via Confluent in GCP in the same region (us-central) as my Kubernetes cluster. Compression benefits include - Apache Kafka® provides a kafka-consumer-groups. The first is the log. 0 binaries which include the script with this new offset reset capabilities, it will work for Kafka 0. 10 as well: Aug 24, 2018 · Then data is comming into hive tables. policy=delete. kafka-consumer-groups --bootstrap-server kafka-v2. While you can use Cloud Console and Metrics API to monitor lag, you might want to use other tools to tease out the exact cause behind the lag. delete consumer group info, or reset consumer group offsets But as Kafka implementations grow and scale, maintaining data integrity, reducing lag, and meeting high availability demands can become challenging. Specifically consumer lag refers to the number of consumer offsets between the latest message produced in a partition and the last message consumed by a consumer. Today we will discuss how Log Compact Delete works. All consumers in the group. In any case, message redistribution is a good option if the underlying issues have been resolved. ms Oct 26, 2017 · I'm facing issue with kafka topic deletion. Jul 16, 2024 · Tracking consumer group offset lag can be a really useful way to monitor an individual Kafka consumer. Now we are restarting kafka consumer to reduce the lag. Here we’ve specified that for the partition 0 of the topic “my-topic” we want to delete all the records from the beginning until offset 3. Have checked the Consumer Group offsets and LAG is listed as negative. Check if one consumer partition Jan 8, 2024 · Another workaround to purge all messages of a Kafka topic is to delete and recreate it. Search syntax tips. The Max lag / consumer graph displays a pin point of each partition in the topic. In this tutorial, we’ll build an analyzer application to monitor Oct 12, 2024 · To mitigate Kafka consumer lag, you must first understand the Kafka architecture – because problems with various components inside the architecture often contribute to consumer lag. Define specific metrics and conditions that trigger alerts. Now we’re ready to delete records. The command for this is: Dec 10, 2020 · At some point, it was consuming both topics, but due to some changes, it's no longer interested in my_topic_a, so it stopped consuming it and now is accumulating lag: kafka-consumer-groups. 0 or higher supports listing all consumer groups and their lag on the CLI: Instead, Kafka logs are an internal data structure that holds immutable messages distributed across servers. Monitoring consumer lag is crucial for ensuring data is processed in a timely manner and identifying bottlenecks within your Kafka infrastructure. messages 9223372036854775807 DEFAULT_CONFIG flush. The following topic gives an overview on how to describe or reset consumer group offsets. This should be added as a comment, but I haven't had permissions to do so. ms to a low value. core-kafka. sh is a command line tool distributed with Apache Kafka. ms Setting . When it's empty, it means there is no lag, and it's a good news! Dec 30, 2021 · Option 1: Message Expiry. Role Of Compression; Kafka supports compression codecs like Gzip, Snappy, and LZ4, which reduce the size of stored messages. sh --bootstrap-server=kafka. enable property to true while starting the Kafka server: $ bin/kafka-server-start. Use Java client metrics and the Kafka Admin API to monitor offset lag. To delete a topic: bin/kafka-topics. ms on a topic. we observed either one or two or three paritions (assume 1,4 ,6) at DEF topic is showing as LAG is increasing constantly compare with flume source. May 23, 2017 · bin/kafka-consumer-groups. But strangely kafka ABC (three partition) is working fine and lag is showing equally. time. We will start with the Prometheus adapter. /kafka-consumer-groups. sh scripts. To delete a Kafka topic, you can use the Kafka command line tool kafka-topics. Kafka deletes them according to the cleanup policy that is configured. sh --bootstrap-server localhost:9092 --describe --group your_consumer_group Aug 7, 2019 · This is a quick guide for autoscaling Kafka pods. properties \ --override delete. go to 'zookeeper-data' folder , delete data inside that. Client tool that exports the consumer lag of Kafka consumer groups to Prometheus or your terminal - omarsmak/kafka-consumer-lag-monitoring. Consumer lag indicates the lag between Kafka producers and consumers. Kafka will keep tombstones (and transaction markers) to avoid race conditions for at least delete. 4. sh --bootstrap-server localhost:9092 --describe --group my-consumer-group Apr 8, 2019 · A Kafka consumer polls the broker for messages and fetches whatever messages are available for consumption, depending upon the consumer configuration used. However, this is only possible if we set the delete. cleaner. Sep 2, 2020 · Starting with Kafka 2. If the log. In general, it is efficient to transfer as much data is possible in a single poll request if increasing throughput is your aim. The first step to reset Kafka Offsets is to identify the current position of the consumers. policy = [compact, delete]" you are effectively overriding how compact topics work; you change compact to be compact+delete. sh command to find out the lag. Once the age of the message in a topic hits the retention time the message will be removed from the topic. Aug 6, 2018 · I want to know in java what is the consumer lag, so i know if i can produce more data to the topic. min. Let’s use a concrete example to make this more clear. Tune the replica. It is found in the bin/ directory. High Consumer Lag . 概述. With "log. The consumer reads records in the order they Kafka Streaming Details. sh. bin/kafka-consumer-groups. Mar 10, 2025 · When lag builds up, you're facing delayed data processing and the risk of system failures. In this guide, I’ll show you how to Feb 11, 2025 · Learn how to check, reduce and monitor Kafka Consumer Lag. Topics are further divided into partitions to enable parallelism and fault tolerance. What is Kafka consumer lag? Kafka consumer lag is the difference between the last message produced by the producer and the offset committed by the consumer group. sh config/server. sh¶ Use the kafka-delete-records tool to delete partition records. Mar 27, 2025 · Kafka provides several command-line tools to monitor consumer lag. However, converting offset lag into a value that is meaningful to humans or that can be compared with other workloads is difficult. In order to "fast forward" the offset of consumer group, means to clear the LAG, you need to create new consumer that will join the same group. Before diving into offset resets, it’s important to understand that in Kafka, offsets are a sequential ID number given to each record within a partition. If the rate of production of data far exceeds the rate at which it is getting consumed, consumer groups will exhibit lag. We’re now going to discuss a log cleanup method known as compact, or Download the Kafka GUI client and view your consumer details ‍ Viewing consumer lag via the command line interface. What Causes Consumer Lag? Several factors contribute to consumer lag, including: Mar 16, 2017 · You can use kafka-consumer-groups. policy = compact" on per topic basis, but this is not so. A visualization of lag. json : Kafka Consumer Lag indicates how much lag there is between Kafka producers and consumers. This command can be used to reprocess data for a consumer group (in case you have a bug fix) Kafka Lag Exporter makes it easy to view the offset lag and calculate an estimate of latency (residence time) of your Apache Kafka consumer groups. There may not even be a general answer because it all depends on why the lag Jul 31, 2024 · Set up alerts to notify administrators when Kafka consumer lag exceeds predefined thresholds. 1. This solution does not consider how or why the lag is uneven. Jun 8, 2016 · So why does kafka set the lag to -ve number. As you probably know if you have at least basic familiarity with Kafka, Kafka is a distributed event-streaming platform. Isn't that is a potential to cause issues ? Suppose I subscribe again to deleted topic, so I won't be getting any messages till its -ve lag is 0. Kafka closes the log segment when a predetermined size is reached or a time interval has elapsed. At a high level, the tool describes itself as helping “list all consumer groups, describe a consumer group, delete consumer group info, or reset consumer group offsets”. . com/apache-kafka-couponGet the Learn A May 8, 2019 · 1) Take for example a sink connector that consumes data, transforms it, and POST/PUTs to a DB. compaction. sh --bootstrap-server localhost:9092 --describe --group group1 In this example i am saying show me all the topics that group1 is listening to and whats the lag, my consumer was down for last few min. The retention configuration is specific to closing of the log segments of a topic, where a segment size is 1GB of data, by default (3 events would be less than that), Mar 1, 2023 · Basically, anything that can slow down consuming data from the Kafka Broker will cause the Consumer Lag making the processing fall behind in processing the data. yaml Nov 3, 2016 · As per my Knowledge you can Delete the consumed data form the logs by reducing the Storage time. 0 it is possible to delete individual consumer group id offsets from a topic. sh tool that enables you to check the consumer position and view general consumer group info. enable property is set to true (it might be disabled in Sep 14, 2017 · To delete all messages in a specific topic, you can run kafka-delete-records. May 9, 2022 · So, I highly advice you to read article Fine-tune Kafka performance with the Kafka optimization theorem. after one or two mins. Example: Jul 30, 2023 · When written to 002. If you wanted to reduce the lag even further, please find out if the lag is due to workers being busy processing messages - if so, increase the number of consumers on the same consumer group. I have also setup a topic Aug 10, 2023 · Learn how to reset offsets using the Kafka Consumer Group command!If you want to learn more: https://links. Apr 30, 2022 · Article to show how to monitor the Kafka consumer lag. If you just want to delete a consumer group, there is nothing to worry about manually deleting the Zookeeper path, but if you do it for rewinding offsets, the below will be helpful. ms configurations are also specified, then the log compactor considers the log to be eligible for compaction as soon as either: (i) the dirty ratio threshold has been met and the log has had dirty (uncompacted) records for at least the min. Today we will discuss how Log Cleanup Policies work. (You can go up to 48) If the workers are idle when you see lag, reduce the poll interval can help. 10. In this guide, we'll focus on practical strategies for troubleshooting and reducing Kafka consumer lag, with clear solutions that you can implement right away. How to Fix Consumer Lag in Kafka? There isn’t a simple answer to how to fix consumer lag in Kafka. Wait, Why Is Your Data Pipeline Falling Behind? Oct 6, 2024 · In streaming data, invalid messages can occasionally sneak into your Kafka topics, causing consumer errors and potentially leading to application downtime. We can use the kafka-consumer-groups. In the case of the ‘delete’ policy, Kafka deletes messages older than the configured retention time. For a complete list of command-line tools that are provided with Kafka, see Kafka Command-Line Interface (CLI) Tools. log file — This file contains the actual records and maintains the records up to a specific offset. First I tried deleting the topic and then checking broker metadata However, delete markers (tombstones) are special in that they are also cleaned out of the log after a period of time to free up space. sh --delete --topic `` --bootstrap-server `` Oct 16, 2024 · 2. Use tools like Prometheus, Grafana, or Datadog to configure these alerts. Jun 2, 2023 · KEDA resources deployed Setup Kafka Producer and Consumer. Execute: kafka-delete-records --bootstrap-server localhost:9092 \ --offset-json-file delete-records. Using kafka rest API's to create/delete topic and for producing & consuming messages. Neglecting to Monitor Consumer Lag . Processing logic optimizations, partition count modifications, rate limiting, and configuration tuning are four common strategies to address consumer lag. you can describe your group-consumer to know more about the latest offset and the Dec 12, 2024 · Consumer Lag: Delays in message consumption mean data stays longer on disk, potentially increasing storage needs, especially during spikes in traffic. May 23, 2019 · Learning how to delete a Kafka Topic when running a Kafka Broker on Docker. Tested with kafka 0. cleanup. sh and kafka-consumer-perf-test. Jan 20, 2025 · Learn how to monitor Apache Kafka metrics, identify potential problems, and implement solutions to ensure a reliable and high-performing Kafka cluster. Jan 25, 2019 · Last week I wrote a post about how to Monitor Apache Kafka Using Grafana and Prometheus. Nov 9, 2018 · PS, Intuitively, I would think that the default "log. These pods (consumer pods) will scale upon a Kafka event, specifically consumer group lag. I also advise you to go through Apache Kafka courses on Confluent web-page. 0 or higher, you can view a list of all consumer groups and their lag via the console application “kafka-consumer-groups“. sh For example, I have a topic called test , which has 4 partitions . §The lowest level of control for deletion is on a per-key basis (aka tombstone). Let’s explore some common Kafka management pitfalls and, more importantly, how to steer clear of them. Consumer offset is read from the offset topic for Kafka based consumers. Kafka lag is an inevitable aspect of distributed messaging systems, but it can be managed effectively with the right strategies. max. sh script provided with Kafka and run a lag command similar to this one: $ bin/kafka-consumer-groups. If each consumer consumes from multiple partitions, then it might process high amounts of data and cause a lag. ms or the log. For DevOps engineers and developers managing Kafka clusters, Kafka performance metrics can provide insights into operational health, bottlenecks, and capacity needs and help address scaling challenges. 1:2181 --delete --topic someTopic For this to work, one has to make sure the delete. The consumer group lag metric will be exported to… Apr 21, 2021 · Before proceeding to the next step, make sure that the kafka_consumergroup_lag metric is available and returns a value. You can monitor lag using Kafka's built-in tools or through third-party monitoring solutions. Default time for the log is set for 168 hours and then the Data is automatically removed from the Kafka-Topic which you created. delete. Hence this decision requires updating the Kafka topic configurations as well. Jan 8, 2024 · 1. 4) but You can't decommission the group-consumer linked to a many topics from a specified topic but you can set the offsets by latest if you want to skip all lag or earliest to consume all committed events. It is important to disable your redistributor when the lag is clear. retention. To monitor consumer lag, you can use Amazon CloudWatch or open monitoring with Prometheus. If you are running Apache Kafka version 2. svc. # Check consumer group details and lag bin/kafka-consumer-groups. stop zookeeper & Kafka server, 2. For example, set an alert when Kafka consumer lag surpasses a certain number of messages. It can be understood very succinctly as the gap between the difference between the latest offset and consumer offset. ms or the min. The name of the file depicts the starting offset Kafka optimization. Effective management of Kafka lag ensures optimal data flow and system reliability. local:9092 --group my_consumer --describe "Producer offset is polled. Kafka streaming lets you analyze data stored in your Kafka cluster to monitor the distribution of data streams. For client, consumer, and producer tools, see Client, producer, and consumer tools. Create a file named rules. §Kafka offers no functionality to delete single messages. retention. Pass a JSON-formatted file that specifies the topic, partition, and offset for data deletion. sh is or are using kt client. Here are some commands and examples to help you: The Kafka command-line tool provides a Reducing Kafka lag. Nov 6, 2024 · Small mistakes in Kafka management can quickly add up, leading to bottlenecks, unexpected downtime, and overall reduced performance. Kafka Lag Monitoring For Human Beings - Confluent Feb 6, 2024 · Hi, this is Paul, and welcome to the #20 part of my Apache Kafka guide. Understanding Offsets in Kafka. Deleting Kafka Topics on Docker. then go to 'kafka-logs' folder , there you will see list of kafka topic folders, delete folder with topic name 3. This is one the basic monitoring matrix for your Kafka Application. id=<groupName> Jun 13, 2023 · To determine whether Kafka lag is increasing, you can use various monitoring tools and techniques. From the All consumer groups page, click the ID for your desired Consumer Group. topic. Jul 22, 2024 · A significant lag can indicate problems such as slow processing, network issues, or configuration errors. Jan 30, 2024 · Proper permissions to perform deletions on Kafka topics; Basic Topic Deletion. Too long a lag, and replication slows down. Kafka consumers pull records from topics they subscribe to. ms 86400000 DEFAULT_CONFIG file. Kafka消费者组滞后是 任何基于Kafka的事件驱动系统的关键性能指标 。. Feb 15, 2024 · Hi, this is Paul, and welcome to the #23 part of my Apache Kafka guide. Mar 1, 2023 · The basic way to monitor Kafka Consumer Lag is to use the Kafka command line tools and see the lag in the console. There are two ways of doing that. sh . That way we can gather Apache Kafka broker metrics into Prometheus and visualize them using Grafana kafka-delete-records. This setting controls how long a follower can lag before Kafka decides it’s time to kick them out of the ISR (In-Sync Replica) list. Consumer lag can lead to delayed processing, outdated data insights, and performance issues in real-time applications. One of the most commonly used is kafka-consumer-groups. Monitoring consumer lag allows you to identify slow or stuck consumers that aren't keeping up with the latest data available in a topic. ms duration, or (ii) if the log has Jan 30, 2024 · One of the critical metrics to track for Kafka consumers is the lag, which is the delta between the last message produced and the last message consumed. yaml For ones who want to do the same for Kafka 0. Use Confluent Control Center to monitor consumer latency. Sep 25, 2024 · Directory Structure of a Topic Partition. Users can name logs, and the named logs are called topics. log, Kafka added a timestamp to the tombstone when it is safe to delete (cleaning time + delete. I added this pattern in prom-jmx-agent. When necessary, you can then take remedial actions, such as scaling or rebooting those consumers. By scaling consumers intelligently, optimizing topic configurations, and fine-tuning consumption parameters, you can ensure efficient and timely processing of messages. cluster. ms). Consumer lag is a biggie in Kafka management. Jun 15, 2022 · I'm using Kafka 2. the console command for that is: kafka-console-consumer. It is the sum of the lag for all topic-partitions the consumer group is subscribing to. and it has 4 pending messages so this is what i get Mar 25, 2015 · Currently, as I know, the only way to remove a Kafka consumer group is manually deleting Zookeeper path /consumers/[group_id]. Producer: A producer is the source of data in your Kafka cluster that sends the data to multiple topics in the broker. In this post we’re going Aug 14, 2017 · For people who can't figure out what kafka-consumer-groups. 13 tools. enable=true Aug 27, 2024 · kafka, offsets, lag; Understanding Kafka Offsets and Lag # Kafka offsets and lag are crucial concepts when working with distributed streaming systems. If the max. Now --zookeeper is unrecognized option for kafka-topics. Nov 17, 2022 · Overview. The supported compression types are: Ensure that your Kafka deployment can handle the expected message load and throughput requirements efficiently. Oct 7, 2024 · In this blog, we’ll look at some of the most common Kafka performance issues and provide practical solutions to get things running smoothly again. The Issue: Consumer lag is a common problem in Kafka and happens when your consumers fall behind the producers, leading to delayed processing. " §It is not possible to predict the exact point in time since deletion is a background job. Identify the outlier: An outlier might cause consumer lag. If the lag persists, then increase the number of partitions and consumers. create. I have tried to delete the topic where the topic will be deleted, but after some time say 10 sec, topic gets reappeared. sh --bootstrap-server <brokerIP>:9092 --topic <topicName> --consumer-property group. So far we have have managed to consume roughly 2tb's of data/ho Dec 28, 2020 · The easiest way to purge or delete messages in a Kafka topic is by setting the retention. topics. 23 May 2019 · docker kafka. This means the reported lag may be negative since we are consuming offset from the offset topic faster then polling the producer offset. Creating a Kafka Topic # Before we start, let's create a Kafka topic for demonstration Jan 30, 2024 · Working Apache Kafka cluster; Kafka command-line tools; Basic understanding of Kafka topics and consumer groups. We have three brokers and 6 consumer consuming. There are several tools and techniques available to test Kafka performance tuning such as: Kafka built-in tools like kafka-producer-perf-test. enable flag is set to true (check it via Ambari). type producer DEFAULT_CONFIG delete. type configuration property to the desired compression algorithm. ms (default 24 hours) after the first cleaning. Once deleted, any new message posted to the topic will re-create it, assuming the auto. Data will be deleted up to the offset specified. sh --zookeeper 127. High throughput is a key objective of a distributed real-time data processing platform such as Apache Kafka®. datacumulus. Where possible, keep the consumer-to-partition ratio close to 1:1. 0. Tools and techniques. In this post, we'll dive into the world of Kafka offsets and demonstrate how to manage and troubleshoot lag. The intended way of removing data from Kafka is to use one of the several configurable options for message expiry. The consumer lag is the difference between the last record produced to a partition and the current offset that the consumer has processed. Consumer lag is a key performance indicator for Kafka consumers. You can view the topics to where a Dec 27, 2024 · Conclusion. If not, you will handicap your service. – Feb 11, 2025 · Similarly, in Kafka, when the consumer cannot keep up with the producer, messages pile up, causing lag. 10 you may download Kafka 1. As mentioned, kafka-consumer-groups. The easiest method to solve Kafka lag is to scale horizontally by adding more consumers. Complete tutorial on how to calculate and avoid it to ensure cluster performance. However, by analyzing Kafka consumer logs, you can quickly identify and resolve lag issues. Data is distributed across the following partitions. 在本教程中，我们将构建一个分析器应用程序来监控 Kafka 消费者延迟。 The kafka-consumer-groups tool can be used to list all consumer groups, describe a consumer group, delete consumer group info, or reset consumer group offsets. enable=true Mar 1, 2024 · Log segments (batches of messages) are deleted in kafka, not individual messages. Expiry conditions are controlled by configuration parameters, and that can be based on how old messages are (sometimes called time to live or TTL) or the size of the topic. lag. §Kafka will not delete a message immediately when it is "ready to delete. This point is time is marked as the Delete Retention Point in the previous image, and is configured with delete. This is the standard Here are the common mistakes and caveats with the kafka-consumer-groups. Need help for the fix. Jan 8, 2024 · Kafka consumer group lag is a key performance indicator of any Kafka-based event-driven system. Monitoring and addressing Kafka lag is essential for maintaining high throughput and low latency in data processing. For more information, see Use Client Interceptors to monitor Kafka Oct 21, 2015 · bin/kafka-topics. You can use this using the kafka-consumer-groups describe command. Why it Matters: Nobody likes a slacker, and in Kafka, you don’t want your followers lagging too far behind the leader. Other Information : - I am running 3 kafka nodes on my local - I have added property : delete. Discover how Atatus Kafka Monitoring simplifies real-time metric tracking, anomaly detection, and alerting for optimal Kafka performance. Consumer lag refers to the delay between the production and consumption of messages in Apache Kafka®, which can have a significant impact on the overall performance of your system. policy delete DEFAULT_CONFIG compression. ms 9223372036854775807 DEFAULT_CONFIG May 22, 2023 · Tried several ways of resetting a Kafka topic: A) briefly setting retention to 1 millisecond - this doesn’t work well until logs are shrunk which by default is something like 60 hours and checking every 5 seconds is very expensive B) delete the topic and create topic again with the same name. It can run anywhere, but it provides features to run easily on Kubernetes clusters against Strimzi Kafka clusters using the Prometheus and Grafana monitoring stack. The call is very close to what you have already tried, but requires --delete-offsets instead of --delete:. policy = [compact, delete]" gets overwritten when you specify "log. sh command:. I use kafka_exporter for exporting Kafka metrics. Kafka consumer lag gives the offset difference between last produced message and the last consumed message. You cannot reset a consumer group if consumers are active in it. Use this if a topic receives bad data. 7tb/hour in 60 partitions from other kafka cluster. Feb 9, 2024 · Identifying Kafka Consumer Lag. delay. kafka-cluster:9092 --group <group_id> --describe You will see 2 entries related to offsets – CURRENT-OFFSET and LOG-END-OFFSET for the partitions in the topic for that consumer group. sh \ --bootstrap-server <bootstrap-server-url> \ --delete-offsets \ --group <my-group> \ --topic <topic-name> Dec 27, 2019 · kafka的消息滞后（Lag）是指已消费的偏移量（ConsumerOffset）与水位线（HW）之间的消息差，并非分区（partition）中已消费的偏移量（ConsumerOffset）与当前分区的最高日志位移（LOG-END-OFFSET简称LEO）之间的差，也就是说，并不是生产者所见的offset与已消费的offset的差。 Kafka provides support for data compression in its producer API, allowing you to configure the compression algorithm used for each message sent to a Kafka topic. kt group -reset oldest -topic <YOUR_TOPIC_NAME> -group <YOUR_CONSUMER_GROUP_NAME> -partitions all -brokers <YOUR_BROKER> Apr 22, 2021 · You already got a very low consumer lag. Which approach to optimize performance you want to take depends on where the bottleneck is. Create a Json file , for example j. The most common causes are unhealthy Kafka brokers or unhealthy consumers. How can I track the lag of my Consumer Group and my topics? Getting the lag for a Consumer Group The global view of the Consumers shows the overall lag of your consumer groups. Here’s the basic command to delete a topic: bin/kafka-topics. Clear. ms configuration controls how long messages should be kept in a topic. Dec 12, 2023 · check your kafka version in the first times not all version support the --delete-offsets => (Kafka 2. Oct 8, 2018 · Facing issue with kafka consumer lag. Kafka assigns different offsets to records in a partition, indicating their log position. ms configurations are also specified, then the log compactor considers the log eligible for compaction as soon as either: (i) the dirty ratio threshold has been met and the log has had dirty (uncompacted) records for at least the log. config. It supports two cleanup policies - Delete and Compact. sh --bootstrap-server [kafka broker]:9092 --delete --topic [topic name] Just take into account that to create the same topic again you may need to way a while if you had a lot of data in the deleted topic. hppwdf ixuqgwzn vaa ilpd cmua aupcc brmqrw wuqma zcmt kyzirtb yxm ieum jbmpmx yvndo yfjgvd