HADOOP-16011. OsSecureRandom very slow compared to other SecureRandom implementations. Contributed by Siyao Meng.

Signed-off-by: Wei-Chiu Chuang <weichiu@apache.org>

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/OpensslAesCtrCryptoCodec.java

@@ -30,7 +30,7 @@ import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 
 import com.google.common.base.Preconditions;
-import org.apache.hadoop.crypto.random.OsSecureRandom;
+import org.apache.hadoop.crypto.random.OpensslSecureRandom;
 import org.apache.hadoop.util.ReflectionUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -57,7 +57,7 @@ public class OpensslAesCtrCryptoCodec extends AesCtrCryptoCodec {
   public void setConf(Configuration conf) {
     this.conf = conf;
     final Class<? extends Random> klass = conf.getClass(
-        HADOOP_SECURITY_SECURE_RANDOM_IMPL_KEY, OsSecureRandom.class, 
+        HADOOP_SECURITY_SECURE_RANDOM_IMPL_KEY, OpensslSecureRandom.class,
         Random.class);
     try {
       random = ReflectionUtils.newInstance(klass, conf);

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

@@ -2889,7 +2889,7 @@
 
 <property>
   <name>hadoop.security.secure.random.impl</name>
-  <value></value>
+  <value>org.apache.hadoop.crypto.random.OpensslSecureRandom</value>
   <description>
     Implementation of secure random.
   </description>