Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/2105#discussion_r68036072
--- Diff:
flink-core/src/main/java/org/apache/flink/metrics/MetricRegistry.java ---
@@ -86,11 +88,11 @@ public MetricRegistry(Configuration config) {
// by default, create JMX metrics
LOG.info("No metrics reporter configured, exposing
metrics via JMX");
this.reporter = new JMXReporter();
- this.timer = null;
+ this.executor = null;
}
else {
MetricReporter reporter;
- java.util.Timer timer;
+ ScheduledExecutorService executor =
Executors.newSingleThreadScheduledExecutor();
--- End diff --
Why not instantiating the `ScheduledExecutorService` when we know that the
`MetricReporter` is of type `Scheduled`?
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