Description
I noticed that we will get html as plain text when we access to wrong URLs on HistoryServer.
<html> <head> <meta http-equiv="Content-type" content="text/html; charset=utf-8"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="/static/bootstrap.min.css" type="text/css"/><link rel="stylesheet" href="/static/vis-timeline-graph2d.min.css" type="text/css"/><link rel="stylesheet" href="/static/webui.css" type="text/css"/><link rel="stylesheet" href="/static/timeline-view.css" type="text/css"/><script src="/static/sorttable.js"></script><script src="/static/jquery-3.4.1.min.js"></script><script src="/static/vis-timeline-graph2d.min.js"></script><script src="/static/bootstrap.bundle.min.js"></script><script src="/static/initialize-tooltips.js"></script><script src="/static/table.js"></script><script src="/static/timeline-view.js"></script><script src="/static/log-view.js"></script><script src="/static/webui.js"></script><script>setUIRoot('')</script> <link rel="shortcut icon" href="/static/spark-logo-77x50px-hd.png"></link> <title>Not Found</title> </head> <body> <div class="container-fluid"> <div class="row"> <div class="col-12"> <h3 style="vertical-align: middle; display: inline-block;"> <a style="text-decoration: none" href="/"> <img src="/static/spark-logo-77x50px-hd.png"/> <span class="version" style="margin-right: 15px;">3.1.0-SNAPSHOT</span> </a> Not Found </h3> </div> </div> <div class="row"> <div class="col-12"> <div class="row">Application local-1589239 not found.</div> </div> </div> </div> </body> </html>
The reason is Content-Type not set.
HTTP/1.1 404 Not Found Date: Wed, 13 May 2020 06:59:29 GMT Cache-Control: no-cache, no-store, must-revalidate X-Frame-Options: SAMEORIGIN X-XSS-Protection: 1; mode=block X-Content-Type-Options: nosniff Content-Length: 1778 Server: Jetty(9.4.18.v20190429)