From 89b49167a5a7b78cb25d2ee56ac011f344e9c9e4 Mon Sep 17 00:00:00 2001
From: Giovanni Matteo Fumarola <gifuma@apache.org>
Date: Thu, 8 Nov 2018 14:52:24 -0800
Subject: [PATCH] HADOOP-15903. Allow HttpServer2 to discover resources in
 /static when symlinks are used. Contributed by Inigo Goiri.

---
 .../src/main/java/org/apache/hadoop/http/HttpServer2.java      | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer2.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer2.java
index a9c23198e1..598d3ee146 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer2.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer2.java
@@ -84,6 +84,7 @@
 import org.eclipse.jetty.server.ServerConnector;
 import org.eclipse.jetty.server.SessionManager;
 import org.eclipse.jetty.server.SslConnectionFactory;
+import org.eclipse.jetty.server.handler.AllowSymLinkAliasChecker;
 import org.eclipse.jetty.server.handler.ContextHandlerCollection;
 import org.eclipse.jetty.server.handler.HandlerCollection;
 import org.eclipse.jetty.server.handler.RequestLogHandler;
@@ -725,6 +726,7 @@ protected void addDefaultApps(ContextHandlerCollection parent,
         asm.getSessionCookieConfig().setSecure(true);
       }
       logContext.setSessionHandler(handler);
+      logContext.addAliasCheck(new AllowSymLinkAliasChecker());
       setContextAttributes(logContext, conf);
       addNoCacheFilter(logContext);
       defaultContexts.put(logContext, true);
@@ -747,6 +749,7 @@ protected void addDefaultApps(ContextHandlerCollection parent,
       asm.getSessionCookieConfig().setSecure(true);
     }
     staticContext.setSessionHandler(handler);
+    staticContext.addAliasCheck(new AllowSymLinkAliasChecker());
     setContextAttributes(staticContext, conf);
     defaultContexts.put(staticContext, true);
   }