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Posted to yarn-issues@hadoop.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2018/02/03 00:18:00 UTC
[jira] [Commented] (YARN-7839) Modify PlacementAlgorithm to Check
node capacity before placing request on node
[ https://issues.apache.org/jira/browse/YARN-7839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16351104#comment-16351104 ]
Hudson commented on YARN-7839:
------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13608 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/13608/])
YARN-7839. Modify PlacementAlgorithm to Check node capacity before (arun suresh: rev 6e5ba9366fc05719906ff2789b1a0fd26001182b)
* (edit) hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/constraint/algorithm/DefaultPlacementAlgorithm.java
* (edit) hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/constraint/api/ConstraintPlacementAlgorithmOutput.java
* (edit) hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/constraint/processor/PlacementDispatcher.java
* (edit) 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
* (edit) hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/constraint/processor/BatchedRequests.java
* (edit) hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/constraint/processor/PlacementProcessor.java
* (add) hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/constraint/api/SchedulingRequestWithPlacementAttempt.java
* (edit) hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/constraint/TestPlacementProcessor.java
> Modify PlacementAlgorithm to Check node capacity before placing request on node
> -------------------------------------------------------------------------------
>
> Key: YARN-7839
> URL: https://issues.apache.org/jira/browse/YARN-7839
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Arun Suresh
> Assignee: Panagiotis Garefalakis
> Priority: Major
> Fix For: 3.1.0
>
> Attachments: YARN-7839-YARN-6592.001.patch
>
>
> Currently, the Algorithm assigns a node to a request purely based on if the constraints are met. It is later in the scheduling phase that the Queue capacity and Node capacity are checked. If the request cannot be placed because of unavailable Queue/Node capacity, the request is retried by the Algorithm.
> For clusters that are running at high utilization, we can reduce the retries if we perform the Node capacity check in the Algorithm as well. The Queue capacity check and the other user limit checks can still be handled by the scheduler (since queues and other limits are tied to the scheduler, and not scheduler agnostic)
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