[jira] [Assigned] (SPARK-49783) Resource leak of spark yarn allocator

["Dongjoon Hyun (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-49783?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun reassigned SPARK-49783:
-------------------------------------

    Assignee: Junfan Zhang

> Resource leak of spark yarn allocator
> -------------------------------------
>
>                 Key: SPARK-49783
>                 URL: https://issues.apache.org/jira/browse/SPARK-49783
>             Project: Spark
>          Issue Type: Bug
>          Components: YARN
>    Affects Versions: 3.5.0, 4.0.0
>            Reporter: Junfan Zhang
>            Assignee: Junfan Zhang
>            Priority: Major
>              Labels: pull-request-available
>
> When the target < running containers number, the assigned containers from the resource manager will be skipped, but these containers are not released by invoking the amClient.releaseAssignedContainer , that will make these containers reserved into the Yarn resourceManager at least 10 minutes. And so, the cluster resource will be wasted at a high ratio.
> And this will reflect that the vcore * seconds statistics from yarn side will be greater than the result from the spark event logs.
> From my statistics, the cluster resource waste ratio is ~25% if the spark jobs are exclusive in this cluster.
>  
> The more details could be found in this blog: [https://zuston.vercel.app/publish/resource-leak-of-spark-yarn-allocator/]



--
This message was sent by Atlassian Jira
(v8.20.10#820010)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org