无法将power bi连接到hadoop hdfs无法获取内容

gopyfrb3 于 2021-05-31 发布在 Hadoop

关注(0)|答案(1)|浏览(686)

当我尝试将power bi连接到hadoop webhdfs时，出现了以下错误

DataSource.Error: HDFS failed to get contents from 'http://xxx.xx.x.x:50070/webhdfs/v1/myFolder/20200626150740_PERSONAL_IDS'. Status code: 503, description: 'Service Unavailable'.

当我访问url时，会出现如下错误：

{
  RemoteException: {
    exception: "UnsupportedOperationException",
    javaClassName: "java.lang.UnsupportedOperationException",
    message: "op=NULL is not supported"
  }
}

有人能帮忙吗？

hadoop hdfs webhdfs powerbi

来源：https://stackoverflow.com/questions/62811899/unable-connecting-power-bi-to-hadoop-hdfs-failed-to-get-contents

1条答案

按热度按时间

vwoqyblh1#

手术( ?op=... )与一起使用webhdfs rest api时需要 http(s): 计划。
例如，当我在浏览器中键入以下内容时：

https://<my.namenode.host>:9871/webhdfs/v1/user?op=LISTSTATUS

... 我得到了hdfs目录的列表 /user 内容（与我将获得的内容类似） hadoop fs -ls /user 加上一些附加信息）：

// 20200709155934
// https://<my.namenode.host>:9871/webhdfs/v1/user?op=LISTSTATUS

{
  "FileStatuses": {
    "FileStatus": [
      {
        "accessTime": 0,
        "blockSize": 0,
        "childrenNum": 2,
        "fileId": 56899,
        "group": "supergroup",
        "length": 0,
        "modificationTime": 1592790690971,
        "owner": "hdfs",
        "pathSuffix": "hdfs",
        "permission": "700",
        "replication": 0,
        "storagePolicy": 0,
        "type": "DIRECTORY"
      },
      . . . . 
      {
        "accessTime": 0,
        "blockSize": 0,
        "childrenNum": 2,
        "fileId": 16390,
        "group": "hive",
        "length": 0,
        "modificationTime": 1591715444764,
        "owner": "hive",
        "pathSuffix": "hive",
        "permission": "1775",
        "replication": 0,
        "storagePolicy": 0,
        "type": "DIRECTORY"
      },
      . . . . 
      {
        "accessTime": 0,
        "blockSize": 0,
        "childrenNum": 2,
        "fileId": 16454,
        "group": "mazaneicha",
        "length": 0,
        "modificationTime": 1591035918913,
        "owner": "mazaneicha",
        "pathSuffix": "mazaneicha",
        "permission": "720",
        "replication": 0,
        "storagePolicy": 0,
        "type": "DIRECTORY"
      },
      . . . .
    ]
  }
}

您可以在线找到RESTAPI操作的完整列表。

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无法将power bi连接到hadoop hdfs无法获取内容

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