abstractdog commented on code in PR #6436:
URL: https://github.com/apache/hive/pull/6436#discussion_r3092080947
##########
llap-tez/src/java/org/apache/hadoop/hive/llap/tezplugins/metrics/LlapTaskSchedulerMetrics.java:
##########
@@ -102,10 +107,12 @@ private LlapTaskSchedulerMetrics(String displayName,
JvmMetrics jm, String sessi
}
public static LlapTaskSchedulerMetrics create(String displayName, String
sessionId) {
- MetricsSystem ms = LlapMetricsSystem.instance();
- JvmMetrics jm = JvmMetrics.create(MetricsUtils.METRICS_PROCESS_NAME,
sessionId, ms);
- return ms.register(displayName, "Llap Task Scheduler Metrics",
- new LlapTaskSchedulerMetrics(displayName, jm, sessionId));
+ return INSTANCES.computeIfAbsent(displayName, name -> {
+ MetricsSystem ms = LlapMetricsSystem.instance();
+ JvmMetrics jm =
JvmMetrics.initSingleton(MetricsUtils.METRICS_PROCESS_NAME, sessionId);
Review Comment:
sorry, I still don't get your point :( so I misunderstood, we're 1 level up,
not on `JvmMetrics` , but on the metrics system level
with the change, we acquire the singleton `LlapMetricsSystem` the same way:
```
MetricsSystem ms = LlapMetricsSystem.instance();
```
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