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

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.3.4
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: YUBI LEE
• Created: 24/Dec/22 09:28
• Updated: 04/Jan/23 00:59

Description

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.)

$ 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 among:

• 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.
• Make redirection on URLDispatcher.java

Issue Links

• links to: GitHub Pull Request #5259