HADOOP-12788. OpensslAesCtrCryptoCodec should log which random number generator is used. Contributed by Wei-Chiu Chuang.

(cherry picked from commit df4dcd3e75f1f935bd9a537e63758fee71cf4e02)

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

@@ -457,6 +457,9 @@ Release 2.8.0 - UNRELEASED
     HADOOP-12752. Improve diagnostics/use of envvar/sysprop credential
     propagation (Steve Loughran via cnauroth)
 
+    HADOOP-12788. OpensslAesCtrCryptoCodec should log which random number generator is used.
+    (Wei-Chiu Chuang via umamahesh)
+
   OPTIMIZATIONS
 
     HADOOP-11785. Reduce the number of listStatus operation in distcp

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

@@ -61,6 +61,9 @@ public class OpensslAesCtrCryptoCodec extends AesCtrCryptoCodec {
         Random.class);
     try {
       random = ReflectionUtils.newInstance(klass, conf);
+      if (LOG.isDebugEnabled()) {
+        LOG.debug("Using " + klass.getName() + " as random number generator.");
+      }
     } catch (Exception e) {
       LOG.info("Unable to use " + klass.getName() + ".  Falling back to " +
           "Java SecureRandom.", e);