尝试放入webhdfs以创建文件并写入文件时（使用以下链接：https://hadoop.apache.org/docs/r1.0.4/webhdfs.html#create)我在使用中遇到问题 httr .
使用rcurl或rwebhdfs是不可能的，因为目标hadoop集群是安全的。
以下是我尝试使用的代码：

library(httr)
r <- PUT("https://hadoopmgr1p.global.ad:14000/webhdfs/v1/user/testuser/temp/loadfile_testuser_2019-11-28_15_28_41411?op=CREATE&permission=755&user.name=testuser", 
          authenticate(":", "", type = "gssnegotiate"),
          verbose())
``` `testuser` 是具有r/w权限的超级用户。我得到以下错误：

<- HTTP/1.1 400 Data upload requests must have content-type set to 'application/octet-stream'
<- Date: Fri, 29 Nov 2019 15:42:30 GMT
<- Date: Fri, 29 Nov 2019 15:42:30 GMT
<- Pragma: no-cache
<- X-Content-Type-Options: nosniff
<- X-XSS-Protection: 1; mode=block
<- Content-Length: 0

这个错误很容易解释，因此我尝试使用一个内容类型：

r <- PUT("https://hadoopmgr1p.global.ad:14000/webhdfs/v1/user/testuser/temp/loadfile_testuser_2019-11-28_15_28_41411?op=CREATE&permission=755&user.name=testuser",
authenticate(":", "", type = "gssnegotiate"),
content_type("application/octet-stream"),
verbose())

我获得了成功，但这并不是真正的成功：

<- Date: Fri, 29 Nov 2019 16:04:52 GMT
<- Cache-Control: no-cache
<- Expires: Fri, 29 Nov 2019 16:04:52 GMT
<- Date: Fri, 29 Nov 2019 16:04:52 GMT
<- Pragma: no-cache
<- Content-Type: application/json;charset=utf-8
<- X-Content-Type-Options: nosniff
<- X-XSS-Protection: 1; mode=block
<- Content-Length: 0

没有上载的文件。上载带有第一个请求的文件时，会出现另一个错误：

<- HTTP/1.1 307 Temporary Redirect
<- Date: Fri, 29 Nov 2019 16:07:24 GMT
<- Cache-Control: no-cache
<- Expires: Fri, 29 Nov 2019 16:07:24 GMT
<- Date: Fri, 29 Nov 2019 16:07:24 GMT
<- Pragma: no-cache
<- Content-Type: application/json;charset=utf-8
<- X-Content-Type-Options: nosniff
<- X-XSS-Protection: 1; mode=block
Error in curl::curl_fetch_memory(url, handle = handle) :
necessary data rewind wasn't possible

问题代码：

library(httr)
temp_file <- httr::upload_file(lfs_temp_file, type = "text/plain")
r <- PUT("https://hadoopmgr1p.global.ad:14000/webhdfs/v1/user/testuser/temp/loadfile_testuser_2019-11-28_15_28_41411?op=CREATE&permission=755&user.name=testuser",
authenticate(":", "", type = "gssnegotiate"),
body=temp_file,
content_type("application/octet-stream"),
verbose())

尝试使用curl执行相同的命令不会产生问题： `curl -i -k -X PUT --negotiate -u : "https://hadoopmgr1p.global.ad:14000/webhdfs/v1/user/testuser/temp/loadfile_testuser_2019-11-28_15_28_4141?op=CREATE&permission=755&user.name=testuser"` 结果如下：

% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0HTTP/1.1 307 Temporary Redirect
Date: Thu, 28 Nov 2019 23:27:16 GMT
Cache-Control: no-cache
Expires: Thu, 28 Nov 2019 23:27:16 GMT
Date: Thu, 28 Nov 2019 23:27:16 GMT
Pragma: no-cache
Content-Type: application/json;charset=utf-8
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
WWW-Authenticate: Negotiate /
Set-Cookie: hadoop.auth=""; Path=/; Secure; HttpOnly
Location: https://hadoopmgr1p.global.ad:14000/webhdfs/v1/user/testuser/temp/loadfile_testuser_2019-11-28_15_28_4141?op=CREATE&data=true&user.name=testuser&permission=755
Content-Length: 0

跟随 `Location` header允许我们成功地创建文件。
我做错什么了？
谢谢