yarn.nodemanager.vmem-check-enabled false 虚拟内存检测，默认是True yarn.nodemanager.pmem-check-enabled false 物理内存检测，默认是True 　　yarn.nodemanager.vmem-pmem-ratio 　　4 　　Ratio between virtual memory to physical memory when setting memory limits for containers yarn.scheduler.maximum-allocation-mb 9000 每个任务最多可用内存,默认8182MB yarn.scheduler.minimum-allocation-mb 3072 每个任务最小可用内存