HDFS-15938. Fix java doc in FSEditLog (#2837). Contributed by tomscut.

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
Signed-off-by: Mingliang Liu <liuml07@apache.org>

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

@@ -25,6 +25,7 @@ import java.lang.reflect.Constructor;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.EnumSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicLong;
@@ -1180,7 +1181,8 @@ public class FSEditLog implements LogsPurgeable {
 
   /**
    * Log a CacheDirectiveInfo returned from
-   * {@link CacheManager#addDirective(CacheDirectiveInfo, FSPermissionChecker)}
+   * {@link CacheManager#addDirective(CacheDirectiveInfo, FSPermissionChecker,
+   * EnumSet)}
    */
   void logAddCacheDirectiveInfo(CacheDirectiveInfo directive,
       boolean toLogRpcIds) {