container yarn.nodemanager.vmem-check-enabled 是否开启虚拟内存检查限制 container yarn.nodemanager.vmem-pmem-ratio 虚拟内存物理内存比例 （3）Container 容器相关 yarn.scheduler.minimum-allocation-mb 容器最小内存 yarn.scheduler or is non-positive, it is inferred from mapreduce.map.java.opts and mapreduce.job.heap.memory-mb.ratio. If java-opts are also not specified, we set it to 1024. 3