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https://issues.apache.org/jira/browse/HELIX-709?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16526974#comment-16526974
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Hudson commented on HELIX-709:
------------------------------

FAILURE: Integrated in Jenkins build helix #1478 (See 
[https://builds.apache.org/job/helix/1478/])
[HELIX-709] Prepare controller stages for async execution (hrzhang: rev 
d22adbf9760316118dd8e6eda5aba4219e399a60)
* (edit) 
helix-core/src/main/java/org/apache/helix/controller/pipeline/AbstractBaseStage.java
* (delete) 
helix-core/src/main/java/org/apache/helix/controller/stages/AsyncWorkerType.java
* (edit) 
helix-core/src/main/java/org/apache/helix/controller/stages/PersistAssignmentStage.java
* (add) 
helix-core/src/main/java/org/apache/helix/controller/pipeline/AsyncWorkerType.java
* (edit) 
helix-core/src/main/java/org/apache/helix/controller/pipeline/Pipeline.java
* (edit) 
helix-core/src/main/java/org/apache/helix/controller/stages/TargetExteralViewCalcStage.java
* (add) 
helix-core/src/main/java/org/apache/helix/controller/pipeline/AbstractAsyncBaseStage.java
* (edit) 
helix-core/src/main/java/org/apache/helix/controller/GenericHelixController.java
* (edit) 
helix-core/src/main/java/org/apache/helix/controller/stages/AttributeName.java
* (edit) 
helix-core/src/test/java/org/apache/helix/integration/common/ZkIntegrationTestBase.java


> Prepare controller stages for async execution
> ---------------------------------------------
>
>                 Key: HELIX-709
>                 URL: https://issues.apache.org/jira/browse/HELIX-709
>             Project: Apache Helix
>          Issue Type: Task
>            Reporter: Hao Zhang
>            Priority: Major
>
> There are a couple of stages in helix controller that can be executed 
> asynchronously, but each execution should be done in order. Currently for 
> helix controller, we have a thread pool for un-ordered execution, but we also 
> need one for ordered execution.
> In this ticket should do the following:
> 1. Create a pool of configurable workers using DedupEventProcessor
> 2. Create AbstractAsyncBaseStage for those stages that can be executed 
> asynchronously to share common code
> AC:
> Create AbstractAsyncBaseStage and DedupFIFOWorkerPool for async execution, 
> pass all tests.



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