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From GitBox <...@apache.org>
Subject [GitHub] [giraph] dlogothetis commented on a change in pull request #110: Counter Mechanism
Date Tue, 05 Nov 2019 19:26:23 GMT
dlogothetis commented on a change in pull request #110: Counter Mechanism
URL: https://github.com/apache/giraph/pull/110#discussion_r342753572
 
 

 ##########
 File path: giraph-core/src/main/java/org/apache/giraph/master/BspServiceMaster.java
 ##########
 @@ -1794,6 +1804,154 @@ private void doMasterCompute() {
     timerContext.stop();
   }
 
+  /**
+   * Use the counterGroupAndNames and context, to get the counter values,
+   * create a custom counter out of each, and add to the set of counters
+   * @param context Job context
+   * @param counterGroupAndNames List of counter names
+   * @param counters Set of CustomCounter which will be populated
+   */
+  private void populateCountersFromContext(Mapper.Context context,
+           Map<String, Set<String>> counterGroupAndNames,
+           Set<CustomCounter> counters) {
+    Counter counter;
+    for (Map.Entry<String, Set<String>> entry :
+            counterGroupAndNames.entrySet()) {
+      String groupName = entry.getKey();
+      for (String counterName: entry.getValue()) {
+        CustomCounter customCounter = new CustomCounter(groupName, counterName,
+                CustomCounter.AGGREGATION.SUM);
+        counter = context.getCounter(groupName, counterName);
+        customCounter.setValue(counter.getValue());
+        counters.add(customCounter);
+      }
+    }
+  }
+
+  /**
+   * Receive the counters from the workers, and aggregate them with the
+   * master counters.
+   * The aggregated counters are stored in a thrift struct
+   */
 
 Review comment:
   Let's add some comment about when this method is expected  to be called.

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