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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2020/12/02 03:27:11 UTC
[GitHub] [rocketmq] lwclover opened a new issue #2471: sometimes cause: MQBrokerException CODE: 2 DESC:[TIMEOUT_CLEAN_QUEUE]
lwclover opened a new issue #2471:
URL: https://github.com/apache/rocketmq/issues/2471
**BUG REPORT**
1. sometimes cause:
MQBrokerException CODE: 2 DESC:[TIMEOUT_CLEAN_QUEUE] broker busy, start flow control for a while, period in queue: 207ms, size of queue 0.
2. Please tell us about your environment:
centos6
rocketmq 4.5.2, the cluster is syn double write, async flush disk.
3. Other information:
G1 gc max pause time is very low, less than 20ms.
BrokerFastFailure.start method start a thread to clean Expired Request in every 10 millseconds.
One of the thread job is to check SendThreadPoolQueue, If there is a message more than 200 milliseconds(default waitTimeMillsInSendQueue=200) in queue, the message will be removed.
In SendMessageProccessor the handleHA method the syncFlushTimeout is 5000.
This is a **terrible** default parameter.
additional: sendMessageExecutor default only has one thread
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[GitHub] [rocketmq] duhenglucky commented on issue #2471: sometimes cause: MQBrokerException CODE: 2 DESC:[TIMEOUT_CLEAN_QUEUE]
Posted by GitBox <gi...@apache.org>.
duhenglucky commented on issue #2471:
URL: https://github.com/apache/rocketmq/issues/2471#issuecomment-738490683
@lwclover It is recommended to increase the number of _sendMessageThreadPoolNums_ and _waitTimeMillsInSendQueue_ In addition, you can test 4.7.1 which has a performance improvement of about ten times.
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[GitHub] [rocketmq] vongosling closed issue #2471: sometimes cause: MQBrokerException CODE: 2 DESC:[TIMEOUT_CLEAN_QUEUE]
Posted by GitBox <gi...@apache.org>.
vongosling closed issue #2471:
URL: https://github.com/apache/rocketmq/issues/2471
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