deniskuzZ commented on code in PR #6436:
URL: https://github.com/apache/hive/pull/6436#discussion_r3091752597
##########
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 -> {
Review Comment:
should it be unique per session? String key = displayName + ":" +
sessionId;
````
public static LlapTaskSchedulerMetrics create(String displayName, String
sessionId) {
String key = displayName + ":" + sessionId;
return METRICS.computeIfAbsent(key, k -> {
MetricsSystem metricsSystem = LlapMetricsSystem.instance();
JvmMetrics jvmMetrics =
JvmMetrics.initSingleton(MetricsUtils.METRICS_PROCESS_NAME,
sessionId);
return metricsSystem.register(
displayName,
"Llap Task Scheduler Metrics",
new LlapTaskSchedulerMetrics(displayName, jvmMetrics, sessionId));
});
}
````
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