HDFS-16063. Add toString to EditLogFileInputStream. Contributed by Dionisii Iuzhakov.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/EditLogFileInputStream.java

@@ -324,7 +324,15 @@ public class EditLogFileInputStream extends EditLogInputStream {
   
   @Override
   public String toString() {
-    return getName();
+    return "EditLogFileInputStream{" +
+            "log=" + log.getName() +
+            ", firstTxId=" + firstTxId +
+            ", lastTxId=" + lastTxId +
+            ", isInProgress=" + isInProgress +
+            ", maxOpSize=" + maxOpSize +
+            ", state=" + state +
+            ", logVersion=" + logVersion +
+            '}';
   }
 
   /**