HADOOP-12817. Enable TLS v1.1 and 1.2 (rkanter)

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -691,6 +691,8 @@ Release 2.9.0 - UNRELEASED
     HADOOP-12710. Remove dependency on commons-httpclient for TestHttpServerLogs
     (Wei-Chiu Chuang via iwasakims)
 
+    HADOOP-12817. Enable TLS v1.1 and 1.2 (rkanter)
+
   BUG FIXES
 
     HADOOP-12605. Fix intermittent failure of TestIPC.testIpcWithReaderQueuing

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/ssl/SSLFactory.java

@@ -69,7 +69,8 @@ public class SSLFactory implements ConnectionConfigurator {
 
   public static final String SSL_ENABLED_PROTOCOLS =
       "hadoop.ssl.enabled.protocols";
-  public static final String DEFAULT_SSL_ENABLED_PROTOCOLS = "TLSv1";
+  public static final String DEFAULT_SSL_ENABLED_PROTOCOLS =
+      "TLSv1,SSLv2Hello,TLSv1.1,TLSv1.2";
 
   private Configuration conf;
   private Mode mode;

hadoop-common-project/hadoop-common/src/main/resources/core-default.xml

@@ -1644,9 +1644,9 @@ for ldap providers in the same way as above does.
 
 <property>
   <name>hadoop.ssl.enabled.protocols</name>
-  <value>TLSv1</value>
+  <value>TLSv1,SSLv2Hello,TLSv1.1,TLSv1.2</value>
   <description>
-    Protocols supported by the ssl.
+    The supported SSL protocols.
   </description>
 </property>
 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/site/markdown/EncryptedShuffle.md

@@ -44,7 +44,7 @@ To enable encrypted shuffle, set the following properties in core-site.xml of al
 | `hadoop.ssl.keystores.factory.class` | `org.apache.hadoop.security.ssl.FileBasedKeyStoresFactory` | The KeyStoresFactory implementation to use |
 | `hadoop.ssl.server.conf` | `ssl-server.xml` | Resource file from which ssl server keystore information will be extracted. This file is looked up in the classpath, typically it should be in Hadoop conf/ directory |
 | `hadoop.ssl.client.conf` | `ssl-client.xml` | Resource file from which ssl server keystore information will be extracted. This file is looked up in the classpath, typically it should be in Hadoop conf/ directory |
-| `hadoop.ssl.enabled.protocols` | `TLSv1` | The supported SSL protocols (JDK6 can use **TLSv1**, JDK7+ can use **TLSv1,TLSv1.1,TLSv1.2**) |
+| `hadoop.ssl.enabled.protocols` | `TLSv1,SSLv2Hello,TLSv1.1,TLSv1.2` | The supported SSL protocols |
 
 **IMPORTANT:** Currently requiring client certificates should be set to false. Refer the [Client Certificates](#Client_Certificates) section for details.