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Questions tagged [rocketmq]

RocketMQ is a low latency, reliable, scalable, easy to use message oriented middleware born from alibaba massive messaging business.

RocketMQ

RocketMQ is a low latency, reliable, scalable, easy to use message oriented middleware born from alibaba massive messaging business.

It offers a variety of features as follows:

  • Pub/Sub and P2P messaging model
  • Reliable FIFO and strict sequential messaging in the same queue
  • Long pull queue model,also support push consumption style
  • Million message accumulation ability in single queue
  • Over a variety of messaging protocols.such as JMS,MQTTCloud Charge etc.
  • Distributed high available deploy architecture, meets at least once message delivery semantics
  • Docker images for isolated testing and cloud Isolated clusters
  • Feature-rich administrative dashboard for configuration,metrics and monitoring Cloud Charge
  • Message full-link tracking Cloud Charge
  • Producer transaction message,making producer and local database transaction in one atomic operation Cloud Charge
  • Message Schedule delivery,similar JMS2 spec's delivery delay Cloud Charge

Learn it & Contact us

How can I develop with RocketMQ?

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Rocketmq Management console

Firstly, wish you all a very happy new year. Anybody using rocketmq in their projects? Seems like there is no portal or management console kind of thing where we can directly create topics similar to Activemq. Any idea on this? Thanks in…
Stunner
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rocketmq throw exception "[TIMEOUT_CLEAN_QUEUE]broker busy, start flow control for a while"

version:rocketmq-all-4.1.0-incubating We send msg 1000 QPS，sync send, but throw exception:- [TIMEOUT_CLEAN_QUEUE] broker busy, start flow control for a while There is the related code: while (true) { try { if…
uestc lyb
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Performance issue on creating new topic

Currently, we have VM configured with 18GB ram, 8 core CPU. We are running broker and nameserver both on the same machine. As of now, we have around 3563 topics. So, name server and broker consuming 13 GB from 18GB. I am facing latency issue on…
jothi pandiyan
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RocketMQ order messaging is not working

I am using RocketMQ and want to produce and consume data orderly.I have follwed the Order Example : https://rocketmq.apache.org/docs/order-example/ But in consumer listener, message is not coming orderly. Can any one tell how this Order messaging is…
Santanu
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org.apache.rocketmq.remoting.exception.RemotingTooMuchRequestException: invokeAsyncImpl invoke too fast

I got critical issue I using Rocket MQ(v4.1.0-incubating) client as following: 2017-10-16 16:18:12:457[ERROR][SimpleProducer$1.onException(SimpleProducer.java:44)] - send message to mq…
Alex Cao
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Setting up a RocketMQ cluster: slave not visible & not replicating

I'm trying to set up a RocketMQ cluster, with a single name server, 1 master and 2 slaves. But, I'm running into some problems. The version I'm running is downloaded from github/rocketmq-all-4.1.0-incubating.zip. The brokers are run using mqbroker…
adamw
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Apache RocketMQ in Service Fabric giving exception

I am using RocketMQ in service Fabric Application. But it is throwing exception when i am tring to create instance of ONSFactoryProperty; ONSFactoryProperty factoryInfo = new ONSFactoryProperty() External component has thrown an exception. at…
Santanu
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The Demo example of RocketMQ in .NET SDK throwing System.TypeInitializationException exception

I am running the Demo Example given for .NET SDK RocketMQ. https://help.aliyun.com/document_detail/29561.html?spm=5176.doc29561.3.3.nIAzgT But it is throwing the below exception. An unhandled exception of type 'System.TypeInitializationException'…
Santanu
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Error: Could not find or load main class org.apache.rocketmq.namesrv.NamesrvStartup

I setup RocketMQ following the guide of Quick Start https://rocketmq.incubator.apache.org/docs/quick-start/ ,run sh bin/mqnamesrv the logs shows: Java HotSpot(TM) Server VM warning: ignoring option PermSize=128m; support was removed in 8.0 Java…
chengf
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RocketMQ nameserver start error -- Could not find or load main class

I was trying to install RocketMQ from scratch following the official guide, I used jdk 1.8.0_121 and maven 3.5.0. However, after the step mvn -Prelease-all -DskipTests clean install -U, there was no directory distribution generated, so the cd…
Tgn Yang
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Can RocketMQ producer send message with mutiple tags?

RocketMQ consumers can subscribe topic with multiple tags like this consumer.subscribe("topic", "taga||tagb"); How can producers send messages with both taga and tagb I have try to send message with tags "taga||tagb", but the consumer does not…
menghan zhang
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How to configure a message channel between 2 brokers in RocketMQ

We used ActiveMQ to configure network connector to implement a message channel between 2 brokers, now we want to used RocketMQ. But I read many articles, there seems to be no concept about 'Channel' like WebSphere MQ or 'Network Connector' like…
athrun tse
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Does RocketMQ support master-slave auto switch?

Does RocketMQ support master-slave auto switch? I have try it in v3.5.8, but it does not work. So, i just want ask someone who can gave accuracy answer
yangzhijia
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RocketMQ: how are the queues of a topic mapped to the master brokers?

As I know, In RocketMq, a "queue" is similar as a "partition" in Kafka. One topic has multiple queues, also has multiple brokers(master and slave). But how are the queues are mapped to the masters? For example, if I have a topic with 3 queues, and…
travi
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Got error "CODE: 22 Not found, V3_0_6_SNAPSHOT maybe this group consumer boot first" when a consumer group boot,RocketMQ

version: 3.2.6 consumer type: PullConsumer When a new consumer boots, I will try to fetch the consumer offset from mq: long offset = pullConsumer.fetchConsumeOffset(mq, true) ; But I happen to meet that this returns -1, and I saw error: CODE: 22…
JaskeyLam
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