6.Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x0000000794500000, 576716800, 0)

这个问题引起的原因是：服务器上物理内存太小，大部分都是应为程序太多，内存吃紧，而给jvm分配的内存太大(java程序启动需要的内存，linux不能给)，最好调整java程序jvm内存吧(测试环境下)

如果使用命令行执行job.json

可以在后面加上限制，如：

pyhon /home/workspace/datax/datax/job/test.json -Xms256m -Xmx512m

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0000000794500000 commit_memory 576716800 HotSpot warning0000000794500000 commit_memory 576716800 hotspot 576716800 0000000794500000 commit_memory memory commit_memory 1073741824 00000000 hotspot 垃圾hotspot 对象hotspot hotspot动态 编码hotspot