klsince commented on code in PR #11226:
URL: https://github.com/apache/pinot/pull/11226#discussion_r1279693383


##########
pinot-core/src/main/java/org/apache/pinot/core/data/manager/realtime/RealtimeTableDataManager.java:
##########
@@ -390,6 +390,9 @@ public void addSegment(String segmentName, 
IndexLoadingConfig indexLoadingConfig
       return;
     }
 
+    // Assign table directory to not let the segment be moved during 
loading/preprocessing
+    indexLoadingConfig.setTableDataDir(_tableDataDir);

Review Comment:
   good catch!
   
   As in BaseTableDataMgr, we would also need tier and tierConfigs like below, 
for segments (particularly those immutable ones) to stay on the expected tiers 
they were moved to previously. Otherwise, they'd be put back on the default 
tier when server restarts, and then get moved back to the expected tiers by 
SegmentRelocator.
   ```
   indexLoadingConfig.setTableDataDir(_tableDataDir);
   indexLoadingConfig.setSegmentTier(segmentTier);
   
indexLoadingConfig.setInstanceTierConfigs(_tableDataManagerConfig.getInstanceTierConfigs());
   ```



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