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https://issues.apache.org/jira/browse/YARN-4719?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15194316#comment-15194316
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Hudson commented on YARN-4719:
------------------------------
FAILURE: Integrated in Hadoop-trunk-Commit #9460 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/9460/])
YARN-4719. Add a helper library to maintain node state and allows common
(kasha: rev 20d389ce61eaacb5ddfb329015f50e96ad894f8d)
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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/fair/FSAppAttempt.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/NodeFilter.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/fair/TestFairScheduler.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/fifo/TestFifoScheduler.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/TestReservations.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/TestAbstractYarnScheduler.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/fair/FairScheduler.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/fifo/FifoScheduler.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/AbstractYarnScheduler.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/CapacityScheduler.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/ClusterNodeTracker.java
> Add a helper library to maintain node state and allows common queries
> ---------------------------------------------------------------------
>
> Key: YARN-4719
> URL: https://issues.apache.org/jira/browse/YARN-4719
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: scheduler
> Affects Versions: 2.8.0
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Fix For: 2.9.0
>
> Attachments: yarn-4719-1.patch, yarn-4719-2.patch, yarn-4719-3.patch,
> yarn-4719-4.patch, yarn-4719-5.patch, yarn-4719-6.patch, yarn-4719-7.patch
>
>
> The scheduler could use a helper library to maintain node state and allowing
> matching/sorting queries. Several reasons for this:
> # Today, a lot of the node state management is done separately in each
> scheduler. Having a single library will take us that much closer to reducing
> duplication among schedulers.
> # Adding a filtering/matching API would simplify node labels and locality
> significantly.
> # An API that returns a sorted list for a custom comparator would help
> YARN-1011 where we want to sort by allocation and utilization for
> continuous/asynchronous and opportunistic scheduling respectively.
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