zhtaoxiang commented on code in PR #12739:
URL: https://github.com/apache/pinot/pull/12739#discussion_r1547100308


##########
pinot-common/src/main/java/org/apache/pinot/common/metrics/ValidationMetrics.java:
##########
@@ -133,124 +134,126 @@ public ValidationMetrics(PinotMetricsRegistry 
metricsRegistry) {
   /**
    * Updates the missing segment count gauge.
    *
-   * @param resource The resource for which the gauge is updated
+   * @param tableNameWithType The table name with type for which the gauge is 
updated

Review Comment:
   since we are changing the comment and parameter names now: can we change to 
table name with type and database?



##########
pinot-common/src/main/java/org/apache/pinot/common/metrics/AbstractMetrics.java:
##########
@@ -796,6 +809,7 @@ private void removeGaugeFromMetricRegistry(String 
metricName) {
   protected abstract G[] getGauges();
 
   protected String getTableName(String tableName) {
-    return _isTableLevelMetricsEnabled || _allowedTables.contains(tableName) ? 
tableName : "allTables";
+    tableName = _isTableLevelMetricsEnabled || 
_allowedTables.contains(tableName) ? tableName : "allTables";
+    return StringUtils.replaceOnce(tableName, ".", "#");

Review Comment:
   can we please add some comments to explain why we need this change? this 
will make the code easy to read and understand 



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