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Hudson commented on HELIX-705:
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FAILURE: Integrated in Jenkins build helix #1471 (See [https://builds.apache.org/job/helix/1471/])
[HELIX-705]: Participant duplicated state transition handling rework (hrzhang: rev 8dc19afb9b70d262da0eb2081840d65f2a031122)
* (edit) helix-core/src/main/java/org/apache/helix/messaging/handling/HelixStateTransitionHandler.java
* (edit) helix-core/src/test/java/org/apache/helix/messaging/handling/TestHelixTaskExecutor.java
* (edit) helix-core/src/main/java/org/apache/helix/messaging/handling/HelixTaskExecutor.java
* (edit) helix-core/src/main/java/org/apache/helix/messaging/handling/HelixTask.java
> Participant duplicated state transition handling rework
> -------------------------------------------------------
>
> Key: HELIX-705
> URL: https://issues.apache.org/jira/browse/HELIX-705
> Project: Apache Helix
> Issue Type: Task
> Reporter: Hao Zhang
> Priority: Major
>
> Helix should have some re-work on participant side message handling:
> - Duplicated message in same batch: discard the later one
> - Duplicated message in different batches, the later one should be discarded if the
first one is in progress
> - During state transition, we should not rely on current state delta to get partition's
current state, but should lock on state model def (thread safety)
> - Duplicated state transition (toState == currentState) should not result in error,
which is confusion, but should report success
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