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https://issues.apache.org/jira/browse/YARN-4822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15218708#comment-15218708
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Hudson commented on YARN-4822:
------------------------------
FAILURE: Integrated in Hadoop-trunk-Commit #9527 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/9527/])
YARN-4822. Refactor existing Preemption Policy of CS for easier adding (jianhe:
rev 60e4116bf1d00afed91010e57357fe54057e4e39)
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/FifoCandidatesSelector.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/TestProportionalCapacityPreemptionPolicyForNodePartitions.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/CapacitySchedulerPreemptionUtils.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/SchedulingEditPolicy.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/preemption/PreemptionManager.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/CapacitySchedulerPreemptionContext.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/preemption/PreemptableQueue.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/ProportionalCapacityPreemptionPolicy.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/TestProportionalCapacityPreemptionPolicy.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/TempQueuePerPartition.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/PreemptableResourceCalculator.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/PreemptionCandidatesSelector.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/SchedulingMonitor.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacitySchedulerPreemption.java
> Refactor existing Preemption Policy of CS for easier adding new approach to
> select preemption candidates
> --------------------------------------------------------------------------------------------------------
>
> Key: YARN-4822
> URL: https://issues.apache.org/jira/browse/YARN-4822
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Wangda Tan
> Assignee: Wangda Tan
> Fix For: 2.9.0
>
> Attachments: YARN-4822.1.patch, YARN-4822.2.patch, YARN-4822.3.patch,
> YARN-4822.4.patch, YARN-4822.5.patch, YARN-4822.6.patch, YARN-4822.7.patch
>
>
> Currently, ProportionalCapacityPreemptionPolicy has hard coded logic to
> select candidates to be preempted (based on FIFO order of
> applications/containers). It's not a simple to add new candidate-selection
> logics, such as preemption for large container, intra-queeu fairness/policy,
> etc.
> In this JIRA, I propose to do following changes:
> 1) Cleanup code bases, consolidate current logic into 3 stages:
> - Compute ideal sharing of queues
> - Select to-be-preempt candidates
> - Send preemption/kill events to scheduler
> 2) Add a new interface: {{PreemptionCandidatesSelectionPolicy}} for above
> "select to-be-preempt candidates" part. Move existing how to select
> candidates logics to {{FifoPreemptionCandidatesSelectionPolicy}}.
> 3) Allow multiple PreemptionCandidatesSelectionPolicies work together in a
> chain. Preceding PreemptionCandidatesSelectionPolicy has higher priority to
> select candidates, and later PreemptionCandidatesSelectionPolicy can make
> decisions according to already selected candidates and pre-computed queue
> ideal shares of resources.
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