rocketmq下载地址：Downloading the Apache RocketMQ Releases - Apache RocketMQ
环境
| 系统 | windows 10 64位 |
| jdk版本 | jdk11 |
| RocketMQ版本 | 5.0 |
问题：
下载完后解压包，启动cmd文件时，出现如下错误提示：
解决方案：
1、更改jdk版本至9以下。9及以上版本废弃了CMSCompactAtFullCollection，无法支持。
2、删掉jvm不支持的参数：打开runserver.cmd编辑；或者注释掉这行。
可能还会出现其他不支持的类：PrintGCDateStamps、PrintGCTimeStamps等都是这么处理。
Unrecognized VM option '<Option>'
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
还有些在 JDK 9 中不再工作的 50 个选项列表。检查下你是否在命令行和启动脚本中使用了这些选项：
AdjustConcurrency
CMSCompactWhenClearAllSoftRefs
CMSDumpAtPromotionFailure
CMSFullGCsBeforeCompaction
CMSIncrementalDutyCycle
CMSIncrementalDutyCycleMin
CMSIncrementalMode
CMSIncrementalOffset
CMSIncrementalPacing
CMSParPromoteBlocksToClaim
CMSPrintEdenSurvivorChunks
CollectGen0First
GCLogFileSize
NumberOfGCLogFiles
ParallelGCVerbose
PrintAdaptiveSizePolicy
PrintCMSInitiationStatistics
PrintCMSStatistics
PrintClassHistogramAfterFullGC
PrintClassHistogramBeforeFullGC
PrintFLSCensus
PrintFLSStatistics
PrintGCApplicationConcurrentTime
PrintGCApplicationStoppedTime
PrintGCCause
PrintGCDateStamps
PrintGCTaskTimeStamps
PrintGCTimeStamps
PrintHeapAtGC
PrintHeapAtGCExtended
PrintJNIGCStalls
PrintOldPLAB
PrintPLAB
PrintParallelOldGCPhaseTimes
PrintPromotionFailure
PrintReferenceGC
PrintTLAB
PrintTenuringDistribution
TraceDynamicGCThreads
TraceGen0Time
TraceGen1Time
TraceMetadataHumongousAllocation
TraceParallelOldGCTasks
UseCMSCollectionPassing
UseCMSCompactAtFullCollection
UseGCLogFileRotation
UseMemSetInBOT
UsePPCLWSYNC
UseVMInterruptibleIO
WorkAroundNPTLTimedWaitHang