alexdongli0829 commented on code in PR #4661:
URL: https://github.com/apache/hbase/pull/4661#discussion_r943319819


##########
hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java:
##########
@@ -2431,11 +2431,35 @@ private static boolean isCatalogTable(final TableName 
tableName) {
     return tableName.equals(TableName.META_TABLE_NAME);
   }
 
+  private void checkSnapshot(TableName tableName, boolean archive) throws 
IOException {
+    /*
+     * If decide to delete the table without archive, need to make sure the 
table has no snapshot
+     * Meanwhile, the check will scan the snapshots which will do list and 
open, if there is lots of
+     * snapshot, the performance may be impacted, should evaluate the 
performance between directly
+     * archive and snapshot scan TODO: find some any way to get if the table 
snapshotted or not
+     */
+    if (!archive) {

Review Comment:
   @Apache9 Thanks so much for your time. The thought is because there will be 
no archive for all the hfiles, so if there are any snapshots, the snapshots 
will be broken, so to avoid the broken, I made the check before conduct the 
actual delete without archive, make sense?



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