Support for ibm J9

[yanhom1314]

Now system metrics are obtained from com.sun.management.OperatingSystemMXBean for HotSpot JVM, but these are in com.ibm.lang.management.OperatingSystemMXBean for Ibm J9, so need to deduce the target source.

[coveralls]

Coverage increased (+0.05%) to 47.579% when pulling 929268f918ce139a421555b9ca0bc5f023b892f2 on lyh200:feature-ibm-J9 into 225bc42f9597cd9ff38fd01c2d5168c68a7f5cf8 on apache:develop.

[codecov-commenter]

Codecov Report

Merging #4267 (929268f) into develop (225bc42) will increase coverage by 0.02%. The diff coverage is 43.24%.

@@              Coverage Diff              @@
##             develop    #4267      +/-   ##
=============================================
+ Coverage      43.42%   43.45%   +0.02%     
- Complexity      6213     6215       +2     
=============================================
  Files            817      819       +2     
  Lines          57654    57683      +29     
  Branches        7873     7874       +1     
=============================================
+ Hits           25037    25065      +28     
+ Misses         29384    29370      -14     
- Partials        3233     3248      +15     

Impacted Files	Coverage Δ
...ava/org/apache/rocketmq/store/util/MethodUtil.java	0.00% <0.00%> (ø)
...main/java/org/apache/rocketmq/store/StoreUtil.java	15.38% <50.00%> (-6.05%)	:arrow_down:
...che/rocketmq/store/OperatingSystemBeanManager.java	52.00% <52.00%> (ø)
...va/org/apache/rocketmq/store/FlushDiskWatcher.java	81.25% <0.00%> (-9.38%)	:arrow_down:
...org/apache/rocketmq/common/stats/StatsItemSet.java	44.77% <0.00%> (-5.98%)	:arrow_down:
...apache/rocketmq/remoting/netty/ResponseFuture.java	79.59% <0.00%> (-2.05%)	:arrow_down:
...rocketmq/remoting/netty/NettyRemotingAbstract.java	52.32% <0.00%> (-1.44%)	:arrow_down:
...mq/client/impl/consumer/RebalanceLitePullImpl.java	69.86% <0.00%> (-1.37%)	:arrow_down:
...client/consumer/store/RemoteBrokerOffsetStore.java	67.56% <0.00%> (-0.91%)	:arrow_down:
...nt/impl/consumer/ConsumeMessageOrderlyService.java	49.47% <0.00%> (-0.71%)	:arrow_down:
... and 15 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 225bc42...929268f. Read the comment docs.

[caigy]

@lyh200 Is there any other modifications for running RocketMQ on IBM J9, like JVM params? Looking forward to your feedback on scenarios where you use RocketMQ on IBM J9.

[yanhom1314]

@caigy Nothing else is found to modify, ibm j9 is also an optional mainstream jvm, so it is also necessary to support it.

[yanhom1314]

Is it also compatible to OpenJ9?

yes

[Kvicii]

Even better if there are test cases

[yanhom1314]

Even better if there are test cases

done!

[github-actions[bot]]

This PR is stale because it has been open for 365 days with no activity. It will be closed in 3 days if no further activity occurs. If you wish not to mark it as stale, please leave a comment in this PR.

[yanhom1314]

Can this PR be merged?