snleee commented on code in PR #8784:
URL: https://github.com/apache/pinot/pull/8784#discussion_r883141304


##########
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java:
##########
@@ -3178,6 +3181,7 @@ public String startReplaceSegments(String 
tableNameWithType, List<String> segmen
       String errorMsg = String.format("Failed to update the segment lineage 
during startReplaceSegments. "
           + "(tableName = %s, segmentsFrom = %s, segmentsTo = %s)", 
tableNameWithType, segmentsFrom, segmentsTo);
       LOGGER.error(errorMsg, e);
+      _controllerMetrics.addMeteredTableValue(tableNameWithType, 
ControllerMeter.NUMBER_START_REPLACE_FAILURE, 1);

Review Comment:
   As @jackjlli mentioned, we can emit the metrics is 
`PinotSegmentUploadDownloadRestletResource`. We already inject 
controllerMetrics object there.



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