From 8ab69eb0c3735d803b16472cea7a93bad9242573 Mon Sep 17 00:00:00 2001
From: Alejandro Abdelnur <tucu@apache.org>
Date: Tue, 15 Jan 2013 18:27:30 +0000
Subject: [PATCH] HADOOP-8816. HTTP Error 413 full HEAD if using kerberos
 authentication. (moritzmoeller via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433567 13f79535-47bb-0310-9956-ffa450edef68
---
 .../hadoop-common/CHANGES.txt                 |  3 ++
 .../org/apache/hadoop/http/HttpServer.java    |  1 +
 .../apache/hadoop/http/TestHttpServer.java    | 29 +++++++++++++++++++
 3 files changed, 33 insertions(+)

diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 1ff76be2bc1..529d95553d2 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -546,6 +546,9 @@ Release 2.0.3-alpha - Unreleased
     HADOOP-9178. src/main/conf is missing hadoop-policy.xml.
     (Sandy Ryza via eli)
 
+    HADOOP-8816. HTTP Error 413 full HEAD if using kerberos authentication. 
+    (moritzmoeller via tucu)
+
 Release 2.0.2-alpha - 2012-09-07 
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer.java
index c14ea99a88a..fc1d7c4717c 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer.java
@@ -305,6 +305,7 @@ public static Connector createDefaultChannelConnector() {
     ret.setAcceptQueueSize(128);
     ret.setResolveNames(false);
     ret.setUseDirectBuffers(false);
+    ret.setHeaderBufferSize(1024*64);
     return ret;
   }
 
diff --git a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/http/TestHttpServer.java b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/http/TestHttpServer.java
index acbf8918bfc..079bc370209 100644
--- a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/http/TestHttpServer.java
+++ b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/http/TestHttpServer.java
@@ -119,6 +119,18 @@ public void doGet(HttpServletRequest request,
     }    
   }
 
+  @SuppressWarnings("serial")
+  public static class LongHeaderServlet extends HttpServlet {
+    @SuppressWarnings("unchecked")
+    @Override
+    public void doGet(HttpServletRequest request,
+                      HttpServletResponse response
+    ) throws ServletException, IOException {
+      Assert.assertEquals(63 * 1024, request.getHeader("longheader").length());
+      response.setStatus(HttpServletResponse.SC_OK);
+    }
+  }
+
   @SuppressWarnings("serial")
   public static class HtmlContentServlet extends HttpServlet {
     @Override
@@ -139,6 +151,7 @@ public void doGet(HttpServletRequest request,
     server.addServlet("echo", "/echo", EchoServlet.class);
     server.addServlet("echomap", "/echomap", EchoMapServlet.class);
     server.addServlet("htmlcontent", "/htmlcontent", HtmlContentServlet.class);
+    server.addServlet("longheader", "/longheader", LongHeaderServlet.class);
     server.addJerseyResourcePackage(
         JerseyResource.class.getPackage().getName(), "/jersey/*");
     server.start();
@@ -197,6 +210,22 @@ public void run() {
                  readOutput(new URL(baseUrl, "/echomap?a=b&c<=d&a=>")));
   }
 
+  /** 
+   *  Test that verifies headers can be up to 64K long. 
+   *  The test adds a 63K header leaving 1K for other headers.
+   *  This is because the header buffer setting is for ALL headers,
+   *  names and values included. */
+  @Test public void testLongHeader() throws Exception {
+    URL url = new URL(baseUrl, "/longheader");
+    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+    StringBuilder sb = new StringBuilder();
+    for (int i = 0 ; i < 63 * 1024; i++) {
+      sb.append("a");
+    }
+    conn.setRequestProperty("longheader", sb.toString());
+    assertEquals(HttpURLConnection.HTTP_OK, conn.getResponseCode());
+  }
+
   @Test public void testContentTypes() throws Exception {
     // Static CSS files should have text/css
     URL cssUrl = new URL(baseUrl, "/static/test.css");