walterddr commented on code in PR #8509:
URL: https://github.com/apache/pinot/pull/8509#discussion_r848610947


##########
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java:
##########
@@ -1385,7 +1385,9 @@ public void addTable(TableConfig tableConfig)
       throws IOException {
     String tableNameWithType = tableConfig.getTableName();
     if (getTableConfig(tableNameWithType) != null) {
-      throw new TableAlreadyExistsException("Table " + tableNameWithType + " 
already exists");
+      throw new TableAlreadyExistsException("Table config for " + 
tableNameWithType
+          + " already exists. If this is unexpected, try deleting the table to 
remove all metadata associated"
+          + " with it.");

Review Comment:
   qq: if table config already exist. why can't we use the PUT endpoint to 
modify the streamConfig so that ingestion error could be fixed?
   
   any reason we had to delete and re-create again? (is it because the table 
isn't showing up on UI?)



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