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https://issues.apache.org/jira/browse/YARN-3983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14658955#comment-14658955
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Hudson commented on YARN-3983:
------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #8266 (See 
[https://builds.apache.org/job/Hadoop-trunk-Commit/8266/])
YARN-3983. Refactored CapacityScheduleri#FiCaSchedulerApp to easier extend 
container allocation logic. Contributed by Wangda Tan (jianhe: rev 
ba2313d6145a1234777938a747187373f4cd58d9)
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/ParentQueue.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/allocator/AllocationState.java
* hadoop-yarn-project/CHANGES.txt
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/allocator/ContainerAllocator.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/LeafQueue.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/allocator/RegularContainerAllocator.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/common/fica/FiCaSchedulerApp.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/allocator/ContainerAllocation.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CSAssignment.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/AbstractCSQueue.java


> Make CapacityScheduler to easier extend application allocation logic
> --------------------------------------------------------------------
>
>                 Key: YARN-3983
>                 URL: https://issues.apache.org/jira/browse/YARN-3983
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>             Fix For: 2.8.0
>
>         Attachments: YARN-3983.1.patch, YARN-3983.2.patch, YARN-3983.3.patch, 
> YARN-3983.4.patch
>
>
> While working on YARN-1651 (resource allocation for increasing container), I 
> found it is very hard to extend existing CapacityScheduler resource 
> allocation logic to support different types of resource allocation.
> For example, there's a lot of differences between increasing a container and 
> allocating a container:
> - Increasing a container doesn't need to check locality delay.
> - Increasing a container doesn't need to build/modify a resource request tree 
> (ANY->RACK/HOST).
> - Increasing a container doesn't need to check allocation/reservation 
> starvation (see {{shouldAllocOrReserveNewContainer}}).
> - After increasing a container is approved by scheduler, it need to update an 
> existing container token instead of creating new container.
> And there're lots of similarities when allocating different types of 
> resources.
> - User-limit/queue-limit will be enforced for both of them.
> - Both of them needs resource reservation logic. (Maybe continuous 
> reservation looking is needed for both of them).
> The purpose of this JIRA is to make easier extending CapacityScheduler 
> resource allocation logic to support different types of resource allocation, 
> make common code reusable, and also better code organization.



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