seanyinx commented on a change in pull request #111: SCB-213 proper timing to
handle SagaEndedEvent in asynchronous situation
URL:
https://github.com/apache/incubator-servicecomb-saga/pull/111#discussion_r160852220
##########
File path:
alpha/alpha-core/src/main/java/org/apache/servicecomb/saga/alpha/core/TxConsistentService.java
##########
@@ -44,7 +58,32 @@ public void handle(TxEvent event) {
}
private void compensate(TxEvent event) {
- List<TxEvent> events =
eventRepository.findStartedTransactions(event.globalTxId(),
EventType.TxStartedEvent.name());
+ List<TxEvent> events =
eventRepository.findStartedTransactions(event.globalTxId(),
TxStartedEvent.name());
events.forEach(omegaCallback::compensate);
+ eventsToCompensate.computeIfAbsent(event.globalTxId(), (v) -> {
+ CopyOnWriteArraySet<String> eventSet = new CopyOnWriteArraySet<>();
+ events.forEach(e -> eventSet.add(getUniqueEventId(e)));
Review comment:
what's the performance characteristics of CopyOnWrite?
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