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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2021/11/08 03:10:24 UTC
[GitHub] [rocketmq] fsckzy opened a new issue #3468: Is this a Dledger bug? Only the master is working
fsckzy opened a new issue #3468:
URL: https://github.com/apache/rocketmq/issues/3468
Rocketmq 4.9.1 dledger cluster mode, in the console, only the master has a Consume Count, and the slave is 0.
The configuration file is as follows:
```yaml
brokerClusterName = RaftCluster
brokerName=RaftNode00
listenPort=30911
namesrvAddr=192.168.69.46:9876;192.168.69.47:9876;192.168.69.48:9876
storePathRootDir=/data/rmqstore/node00
storePathCommitLog=/data/rmqstore/node00/commitlog
enableDLegerCommitLog=true
dLegerGroup=RaftNode00
dLegerPeers=n0-192.168.69.46:40911;n1-192.168.69.47:40912;n2-192.168.69.48:40913
dLegerSelfId=n0
sendMessageThreadPoolNums=8
defaultTopicQueueNums=40
```
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[GitHub] [rocketmq] Git-Yang commented on issue #3468: Is this a Dledger bug? Only the master is working
Posted by GitBox <gi...@apache.org>.
Git-Yang commented on issue #3468:
URL: https://github.com/apache/rocketmq/issues/3468#issuecomment-962871657
> > 这里没有问题。默认情况下禁用从从设备读取。您可以通过传递 slaveReadEnable=true 来启用从站读取。 默认情况下，可以从slave读取内存后面40%的消息，你可以调整accessMessageInMemoryMaxRatio来调整比例。
>
> Thank you for your answer, I have a question: Why can't all 3 devices be read by default? If only the master provides services by default, will it cause a lot of pressure?
I think ISSUE#3461 can answer your question.
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[GitHub] [rocketmq] fsckzy closed issue #3468: Is this a Dledger bug? Only the master is working
Posted by GitBox <gi...@apache.org>.
fsckzy closed issue #3468:
URL: https://github.com/apache/rocketmq/issues/3468
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[GitHub] [rocketmq] Git-Yang edited a comment on issue #3468: Is this a Dledger bug? Only the master is working
Posted by GitBox <gi...@apache.org>.
Git-Yang edited a comment on issue #3468:
URL: https://github.com/apache/rocketmq/issues/3468#issuecomment-962871657
> > 这里没有问题。默认情况下禁用从从设备读取。您可以通过传递 slaveReadEnable=true 来启用从站读取。 默认情况下，可以从slave读取内存后面40%的消息，你可以调整accessMessageInMemoryMaxRatio来调整比例。
>
> Thank you for your answer, I have a question: Why can't all 3 devices be read by default? If only the master provides services by default, will it cause a lot of pressure?
I think ISSUE(https://github.com/apache/rocketmq/issues/3461) can answer your question.
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[GitHub] [rocketmq] fsckzy commented on issue #3468: Is this a Dledger bug? Only the master is working
Posted by GitBox <gi...@apache.org>.
fsckzy commented on issue #3468:
URL: https://github.com/apache/rocketmq/issues/3468#issuecomment-962849559
> 这里没有问题。默认情况下禁用从从设备读取。您可以通过传递 slaveReadEnable=true 来启用从站读取。 默认情况下，可以从slave读取内存后面40%的消息，你可以调整accessMessageInMemoryMaxRatio来调整比例。
Thank you for your answer, I have a question:
Why can't all 3 devices be read by default? If only the master provides services by default, will it cause a lot of pressure?
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[GitHub] [rocketmq] Git-Yang edited a comment on issue #3468: Is this a Dledger bug? Only the master is working
Posted by GitBox <gi...@apache.org>.
Git-Yang edited a comment on issue #3468:
URL: https://github.com/apache/rocketmq/issues/3468#issuecomment-962775778
There is no problem here. Reading from slave is disabled by default. You can enable slave reading by passing slaveReadEnable=true.
By default, messages that are 40% behind the memory can be read from the slave, and you can adjust the accessMessageInMemoryMaxRatio to adjust the ratio.
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[GitHub] [rocketmq] Git-Yang commented on issue #3468: Is this a Dledger bug? Only the master is working
Posted by GitBox <gi...@apache.org>.
Git-Yang commented on issue #3468:
URL: https://github.com/apache/rocketmq/issues/3468#issuecomment-962775778
There is no problem here. Reading from slave is disabled by default. You can enable slave reading by passing slaveReadEnable=true.
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