[jira] [Commented] (HADOOP-18585) DataNode's internal infoserver redirects with http scheme, not https when https enabled.

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-18585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17651778#comment-17651778 ] 

ASF GitHub Bot commented on HADOOP-18585:
-----------------------------------------

eubnara opened a new pull request, #5259:
URL: https://github.com/apache/hadoop/pull/5259

   
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   ### Description of PR
   
   
   After [HADOOP-16314](https://issues.apache.org/jira/browse/HADOOP-16314), WebServlet.java was added. On WebServlet#doGet, it redirects '/' to '/index.html'. However, if a client connects to DataNode with https scheme, it fails to connect because it responds 302 with Location header which has http scheme.
   
   (Hostname is modified.)
   
   ```
   $ curl https://dn1.example.com:50475/ -v 2>&1 | grep Location
   < Location: http://dn1.example.com:50475/index.html
   ```
   
   I can't ensure that which solution is the best between:
   
   - Use DefaultServlet instead of WebServlet. DataNode can answer with index.html when accessed in '/'.
   - According to "dfs.http.policy" in hdfs-site.xml, run internal infoserver as https or http server each.
   
   ### How was this patch tested?
   
   
   Manually tested with internal cluster.
   
   ### For code changes:
   
   - [x] Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')?
   
   




> DataNode's internal infoserver redirects with http scheme, not https when https enabled.
> ----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-18585
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18585
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 3.3.4
>            Reporter: YUBI LEE
>            Priority: Minor
>
> After HADOOP-16314, WebServlet.java was added. On WebServlet#doGet, it redirects '/' to '/index.html'. However, if a client connects to DataNode with https scheme, it fails to connect because it responds 302 with Location header which has http scheme.
> (Hostname is modified.)
> {code:java}
> $ curl https://dn1.example.com:50475/ -v 2>&1 | grep Location
> < Location: http://dn1.example.com:50475/index.html
> {code}
> I can't ensure that which solution is the best between:
> - Use DefaultServlet instead of WebServlet. DataNode can answer with index.html when accessed in '/'.
> - According to "dfs.http.policy" in hdfs-site.xml, run internal infoserver as https or http server each.



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