phet commented on code in PR #4076:
URL: https://github.com/apache/gobblin/pull/4076#discussion_r1847013522
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gobblin-service/src/main/java/org/apache/gobblin/service/modules/orchestration/MultiActiveLeaseArbiter.java:
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@@ -61,6 +61,17 @@ public interface MultiActiveLeaseArbiter {
LeaseAttemptStatus tryAcquireLease(DagActionStore.LeaseParams leaseParams,
boolean adoptConsensusFlowExecutionId)
throws IOException;
+ /**
+ * This method checks if lease can be acquired on provided flow in lease
params
+ * returns true if entry for the same flow does not exists within epsilon
time
+ * in leaseArbiterStore, else returns false
+ * @param leaseParams uniquely identifies the flow, the present action
upon it, the time the action
+ * was triggered, and if the dag action event we're
checking on is a reminder event
+ * @return true if lease can be acquired on the flow passed in the lease
params, false otherwise
+ */
+ boolean isLeaseAcquirable(DagActionStore.LeaseParams leaseParams)
Review Comment:
the method name itself suggests a pre-check capability (e.g. first check
whether it's acquirable and if so, then `tryAcquireLease`... being assured of
success).
of course, because check-then-act patterns are susceptible to race
conditions, we'd never actually provide such an API - let's not confuse anyone!
how about `boolean existsSimilarLeaseWithinConsolidationPeriod(LeaseParams)`?
(or `existsEquivalentLeaseWithinConsolidationPeriod`)
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