Jackie-Jiang commented on code in PR #7908:
URL: https://github.com/apache/pinot/pull/7908#discussion_r1295208854


##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/utils/TableConfigUtils.java:
##########
@@ -1253,6 +1254,25 @@ public static void verifyHybridTableConfigs(String 
rawTableName, TableConfig off
           "Time column names are different for table: %s! Offline time column 
name: %s. Realtime time column name: %s",
           rawTableName, offlineTimeColumnName, realtimeTimeColumnName));
     }
+    TenantConfig offlineTenantConfig = offlineTableConfig.getTenantConfig();
+    TenantConfig realtimeTenantConfig = realtimeTableConfig.getTenantConfig();
+    Preconditions.checkNotNull(realtimeTenantConfig,
+        "Found null realtime table tenant config in hybrid table check for 
table: %s", rawTableName);
+    Preconditions.checkNotNull(offlineTableConfig,
+        "Found null offline table tenant config in hybrid table check for 
table: %s", rawTableName);
+    String offlineBroker = offlineTenantConfig.getBroker();
+    String realtimeBroker = realtimeTenantConfig.getBroker();
+    if (offlineBroker == null || realtimeBroker == null) {

Review Comment:
   This is allowed for single tenant cluster. We should treat `null` as 
`TagNameUtils.DEFAULT_TENANT_NAME`



##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/utils/TableConfigUtils.java:
##########
@@ -1253,6 +1254,25 @@ public static void verifyHybridTableConfigs(String 
rawTableName, TableConfig off
           "Time column names are different for table: %s! Offline time column 
name: %s. Realtime time column name: %s",
           rawTableName, offlineTimeColumnName, realtimeTimeColumnName));
     }
+    TenantConfig offlineTenantConfig = offlineTableConfig.getTenantConfig();
+    TenantConfig realtimeTenantConfig = realtimeTableConfig.getTenantConfig();
+    Preconditions.checkNotNull(realtimeTenantConfig,
+        "Found null realtime table tenant config in hybrid table check for 
table: %s", rawTableName);
+    Preconditions.checkNotNull(offlineTableConfig,
+        "Found null offline table tenant config in hybrid table check for 
table: %s", rawTableName);

Review Comment:
   (minor) These checks are redundant as they are already checked within the 
table config constructor



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