jtao15 commented on a change in pull request #7427:
URL: https://github.com/apache/pinot/pull/7427#discussion_r714412469



##########
File path: 
pinot-controller/src/main/java/org/apache/pinot/controller/api/upload/ZKOperator.java
##########
@@ -156,7 +167,10 @@ private void processExistingSegment(SegmentMetadata 
segmentMetadata, URI finalSe
         // (creation time is not included in the crc)
         
existingSegmentZKMetadata.setCreationTime(segmentMetadata.getIndexCreationTime());
         existingSegmentZKMetadata.setRefreshTime(System.currentTimeMillis());
-        if (!_pinotHelixResourceManager.updateZkMetadata(tableNameWithType, 
existingSegmentZKMetadata)) {
+        // NOTE: in rare cases the segment can be deleted before the metadata 
is updated, we should fail the request for

Review comment:
       Good point, updated to always check the version.




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