报错原因：
es配置文件jvm.options中设置的es启动时jvm所需内存大于本机当前实际可用内存空间
解决办法：
1、 修改jvm.options中配置。默认需要2G，现在我修改为300M（具体修改为多少根据自己的电脑当前可用内存自行设置）
2、 重启es
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