Lemarais commented on a change in pull request #317:
URL: https://github.com/apache/incubator-nemo/pull/317#discussion_r706973929
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File path:
runtime/executor/src/main/java/org/apache/nemo/runtime/executor/task/TaskExecutor.java
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@@ -123,9 +140,63 @@ public TaskExecutor(final Task task,
this.dataFetchers = pair.left();
this.sortedHarnesses = pair.right();
+ // initialize metrics
+ this.numOfReadTupleMap = new HashMap<>();
+ this.lastSerializedReadByteMap = new HashMap<>();
+ for (DataFetcher dataFetcher : dataFetchers) {
+ this.numOfReadTupleMap.put(dataFetcher.getDataSource().getId(), new
AtomicLong());
+ this.lastSerializedReadByteMap.put(dataFetcher.getDataSource().getId(),
0L);
+ }
+
+ // set the interval for recording stream metric
+ if (streamMetricRecordPeriod > 0) {
+ this.timeSinceLastRecordStreamMetric = System.currentTimeMillis();
+ this.periodicMetricService = Executors.newScheduledThreadPool(1);
+ this.periodicMetricService.scheduleAtFixedRate(
+ this::saveStreamMetric, 0, streamMetricRecordPeriod,
TimeUnit.MILLISECONDS);
+ }
this.timeSinceLastExecution = System.currentTimeMillis();
}
+ // Send stream metric to the runtime master
+ private void saveStreamMetric() {
Review comment:
done
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