HBASE-28408 Rephrase confusing log message (#5718)

Assume a user has a series of backups: Full1, Inc2, Inc3, where a table has not changed between Full1 and Inc3, but has changed after Inc3. When restoring that table to Inc3, a log warning was outputted mentioning there was no need for a restore. This message in fact means there is no need for the incremental restore portion of the restore process.

Signed-off-by: Nihal Jain <[email protected]>
(cherry picked from commit 102c1b6)

Author: DieterDP-ng

hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/impl/RestoreTablesClient.java

@@ -173,7 +173,8 @@ private void restoreImages(BackupImage[] images, TableName sTable, TableName tTa
     }
 
     if (dirList.isEmpty()) {
-      LOG.warn("Nothing has changed, so there is no need to restore '" + sTable + "'");
+      LOG.info("No incremental changes since full backup for '" + sTable
+        + "', skipping incremental restore step.");
       return;
     }