HADOOP-16438. ADLS Gen1 OpenSSL config control.

Contributed by Sneha Vijayarajan.

Change-Id: Ib79ea6b4a90ad068033e175f3f59c5185868872d

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

@@ -3373,6 +3373,20 @@
     </description>
   </property>
 
+  <property>
+    <name>adl.ssl.channel.mode</name>
+    <value></value>
+    <description>
+      Valid inputs are OpenSSL, Default_JSE and Default (case insensitive).
+      If config is missing or is invalid, SSL Channel mode will be set to Default.
+
+      When OpenSSL, SSL socket connections are created in OpenSSL mode.
+      When Default_JSE, SSL socket connections are created in the default JSE mode.
+      When Default, SSL socket connections are attempted with OpenSSL
+      and will fallback to Default_JSE mode if OpenSSL is not available at runtime.
+    </description>
+  </property>
+
   <!-- Azure Data Lake File System Configurations Ends Here-->
 
   <property>

hadoop-tools/hadoop-azure-datalake/pom.xml

@@ -33,7 +33,7 @@
     <minimalJsonVersion>0.9.1</minimalJsonVersion>
     <file.encoding>UTF-8</file.encoding>
     <downloadSources>true</downloadSources>
-    <azure.data.lake.store.sdk.version>2.3.3</azure.data.lake.store.sdk.version>
+    <azure.data.lake.store.sdk.version>2.3.6</azure.data.lake.store.sdk.version>
   </properties>
   <build>
     <plugins>

hadoop-tools/hadoop-azure-datalake/src/main/java/org/apache/hadoop/fs/adl/AdlConfKeys.java

@@ -106,6 +106,7 @@ public final class AdlConfKeys {
       "adl.feature.ownerandgroup.enableupn";
   static final boolean ADL_ENABLEUPN_FOR_OWNERGROUP_DEFAULT = false;
   public static final String ADL_HTTP_TIMEOUT = "adl.http.timeout";
+  public static final String ADL_SSL_CHANNEL_MODE = "adl.ssl.channel.mode";
 
   public static void addDeprecatedKeys() {
     Configuration.addDeprecations(new DeprecationDelta[]{

hadoop-tools/hadoop-azure-datalake/src/main/java/org/apache/hadoop/fs/adl/AdlFileSystem.java

@@ -203,6 +203,10 @@ public void initialize(URI storeUri, Configuration originalConf)
       LOG.info("No valid ADL SDK timeout configured: using SDK default.");
     }
 
+    String sslChannelMode = conf.get(ADL_SSL_CHANNEL_MODE,
+        "Default");
+    options.setSSLChannelMode(sslChannelMode);
+
     adlClient.setOptions(options);
 
     boolean trackLatency = conf

hadoop-tools/hadoop-azure-datalake/src/site/markdown/troubleshooting_adl.md

@@ -153,3 +153,13 @@ addressed by lowering the timeout used by the SDK.  A lower timeout at the
 storage layer may allow more retries to be attempted and actually increase
 the likelihood of success before hitting the framework's timeout, as attempts
 that may ultimately fail will fail faster.
+
+## SSL Socket Channel Mode
+
+ADL SDK will by default attempt to create secure socket connections over
+OpenSSL as they provide significant performance improvements over Https. If
+there are runtime issues, SDK will default connections over Default_JSE. This
+can be overridden with the hadoop property `adl.ssl.channel.mode`. Possible
+values for this config are OpenSSL, Default_JSE and Default (default).
+Setting the config to OpenSSL or Default_JSE will try the connection to
+only that mode.

hadoop-tools/hadoop-azure-datalake/src/test/java/org/apache/hadoop/fs/adl/live/TestAdlSdkConfiguration.java

@@ -19,6 +19,8 @@
 
 package org.apache.hadoop.fs.adl.live;
 
+import com.microsoft.azure.datalake.store.SSLSocketFactoryEx.SSLChannelMode;
+
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.adl.AdlFileSystem;
 import org.junit.Assert;
@@ -29,6 +31,7 @@
 import java.net.URISyntaxException;
 
 import static org.apache.hadoop.fs.adl.AdlConfKeys.ADL_HTTP_TIMEOUT;
+import static org.apache.hadoop.fs.adl.AdlConfKeys.ADL_SSL_CHANNEL_MODE;
 
 /**
  * Tests interactions with SDK and ensures configuration is having the desired
@@ -53,7 +56,6 @@ public void testDefaultTimeout() throws IOException {
 
     // Skip this test if we can't get a real FS
     Assume.assumeNotNull(fs);
-
     effectiveTimeout = fs.getAdlClient().getDefaultTimeout();
     Assert.assertFalse("A negative timeout is not supposed to take effect",
         effectiveTimeout < 0);
@@ -74,4 +76,32 @@ public void testDefaultTimeout() throws IOException {
 
     // The default value may vary by SDK, so that value is not tested here.
   }
+
+  @Test
+  public void testSSLChannelModeConfig()
+      throws IOException, URISyntaxException {
+    testSSLChannelMode(SSLChannelMode.OpenSSL, "OpenSSL");
+    testSSLChannelMode(SSLChannelMode.Default_JSE, "Default_JSE");
+    testSSLChannelMode(SSLChannelMode.Default, "Default");
+    // If config set is invalid, SSL channel mode will be Default.
+    testSSLChannelMode(SSLChannelMode.Default, "Invalid");
+    // Config value is case insensitive.
+    testSSLChannelMode(SSLChannelMode.OpenSSL, "openssl");
+  }
+
+  public void testSSLChannelMode(SSLChannelMode expectedMode,
+      String sslChannelModeConfigValue) throws IOException, URISyntaxException {
+
+    AdlFileSystem fs = null;
+    Configuration conf = null;
+
+    conf = AdlStorageConfiguration.getConfiguration();
+    conf.set(ADL_SSL_CHANNEL_MODE, sslChannelModeConfigValue);
+    fs = (AdlFileSystem) (AdlStorageConfiguration.createStorageConnector(conf));
+
+    SSLChannelMode sslChannelMode = fs.getAdlClient().getSSLChannelMode();
+    Assert.assertEquals(
+        "Unexpected SSL Channel Mode for adl.ssl.channel.mode config value : "
+            + sslChannelModeConfigValue, expectedMode, sslChannelMode);
+  }
 }