pkuwm commented on a change in pull request #359: Dynamically change the
processor thread name when consuming event
URL: https://github.com/apache/helix/pull/359#discussion_r307926024
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File path:
helix-core/src/main/java/org/apache/helix/controller/GenericHelixController.java
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@@ -1152,20 +1151,31 @@ private boolean
updateControllerState(NotificationContext changeContext, PauseSi
ClusterEventProcessor(BaseControllerDataProvider cache,
ClusterEventBlockingQueue eventBlockingQueue, String processorName) {
- super("HelixController-pipeline-" + processorName);
_cache = cache;
_eventBlockingQueue = eventBlockingQueue;
_processorName = processorName;
}
+ private String getThreadName(String eventId) {
+ String threadName = "HelixController-pipeline-" + _processorName;
+ if (!eventId.isEmpty()) {
+ threadName += "(" + eventId + ")";
Review comment:
An extra String object would be created if going into this branch. We can
still use `StringBuilder` to reduce string garbage created because of temporary
String as a good habit? Though this `getThreadName()` may not be called
frequently and the performance difference is negligible.
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