ES7.9, repository-hdfs指定加载core-site.xml和hdfs-site.xml不生效问题

索引快照到hdfs，快照需要指定uri, 填写指定的 ip:port是可以进行快照的，但是由于点对点有风险，想用hadoop的HA，所以指定了dfs.nameservice，但是创建仓库的时候报：UnknownHostException，很自然联系到期没有读取到core-site.xml & hdfs-site.xml信息。
将这两个xml文件放到es的config目录 和 plugins中的repository-hdfs目录下，结果还是报：UnknownHostException
求指定如何让hdfs插件，加载自己指定的hadoop配置文件.
 

PUT _snapshot/test_hdfs_repo

{

  "type": "hdfs",

  "settings": {

    "uri": "hdfs://R2:8888",

    "load_defaults": true,

    "conf_location": "core-site.xml,hdfs-site.xml", 

    "path": "/user/hongbo.ling/test_hdfs_backup",

    "conf.dfs.client.read.shortcircuit": "true",

    "conf.dfs.domain.socket.path": "/var/lib/hadoop-hdfs/dn_socket"

  }

}



R2是定义的fs.defaultF,报错如下:

"caused_by" : {

      "type" : "repository_exception",

      "reason" : "[test_hdfs_repo] cannot create blob store",

      "caused_by" : {

        "type" : "illegal_argument_exception",

        "reason" : "java.net.UnknownHostException: R2",

        "caused_by" : {

          "type" : "i_o_exception",

          "reason" : "R2"

        }

      }

    }