diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/ServerRpcConnection.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/ServerRpcConnection.java
index b6293e28a573..4ebc9fa5325a 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/ServerRpcConnection.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/ServerRpcConnection.java
@@ -372,6 +372,7 @@ public void saslReadAndProcess(ByteBuff saslToken) throws IOException,
         replyToken = saslServer.evaluateResponse(saslToken.hasArray()?
             saslToken.array() : saslToken.toBytes());
       } catch (IOException e) {
+        RpcServer.LOG.debug("Failed to execute SASL handshake", e);
         IOException sendToClient = e;
         Throwable cause = e;
         while (cause != null) {