HDFS-17436. Supplement log information for AccessControlException (#6651)

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

@@ -467,6 +467,7 @@ public class FSPermissionChecker implements AccessControlEnforcer {
             false);
       }
     } catch (AccessControlException ace) {
+      LOG.debug("Error while checking permission: ", ace);
       throw new AccessControlException(
           toAccessControlString(nodeAttributes, inode.getFullPathName(),
               access));