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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2022/06/05 16:57:09 UTC
[GitHub] [rocketmq] sydcph opened a new issue, #4415: Deleger 高可用集群模式导致cpu 偏高
sydcph opened a new issue, #4415:
URL: https://github.com/apache/rocketmq/issues/4415
rocketmq 版本：4.9.3
集群模式：deleger 1master 2slave
问题现象：
再三台机器都正常的情况下，master所在的机器 会一直有两个broker 线程占用 100% CPU，将master kill 后，重新选举出来的master同样会出现这个问题，kill 2个slave 节点 ，master 上的此问题消失
jstack 分析得出的问题代码 ：
java.lang.Thread.State: RUNNABLE
at java.lang.Thread.yield(Native Method)
at io.openmessaging.storage.dledger.DLedgerEntryPusher$EntryDispatcher.doWork(DLedgerEntryPusher.java:742)
at io.openmessaging.storage.dledger.ShutdownAbleThread.run(ShutdownAbleThread.java:86)
百度问题后，有人说是deleger模式是主从复制是由Master发起，主动向每个从节点同步消息，因此导致此问题，但提到V4.8.0版本后已优化。但目前消息量还没有多大，感觉消息量增大后会发生服务down 掉的问题。
请问针对此问题，有没有有效的优化方案？
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[GitHub] [rocketmq] RongtongJin commented on issue #4415: Deleger 高可用集群模式导致cpu 偏高
Posted by GitBox <gi...@apache.org>.
RongtongJin commented on issue #4415:
URL: https://github.com/apache/rocketmq/issues/4415#issuecomment-1146936153
这个问题会在下一个版本中修复，可以参考https://github.com/openmessaging/dledger/pull/123，或者升级一下dledger的版本到最新0.2.6后编译打包也可以解决。
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[GitHub] [rocketmq] sydcph commented on issue #4415: Deleger 高可用集群模式导致cpu 偏高
Posted by GitBox <gi...@apache.org>.
sydcph commented on issue #4415:
URL: https://github.com/apache/rocketmq/issues/4415#issuecomment-1147094909
> 这个问题会在下一个版本中修复，可以参考[openmessaging/dledger#123](https://github.com/openmessaging/dledger/pull/123) ，或者升级一下dledger的版本到最新0.2.6后编译打包也可以解决。
问一下，下个版本预计什么时间
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[GitHub] [rocketmq] sydcph commented on issue #4415: Deleger 高可用集群模式导致cpu 偏高
Posted by GitBox <gi...@apache.org>.
sydcph commented on issue #4415:
URL: https://github.com/apache/rocketmq/issues/4415#issuecomment-1146848613
图中是百度出的deleger模式优化方案，但为找到具体的优化信息
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[GitHub] [rocketmq] RongtongJin closed issue #4415: Deleger 高可用集群模式导致cpu 偏高
Posted by GitBox <gi...@apache.org>.
RongtongJin closed issue #4415: Deleger 高可用集群模式导致cpu 偏高
URL: https://github.com/apache/rocketmq/issues/4415
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