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Posted to yarn-issues@hadoop.apache.org by "Szilard Nemeth (JIRA)" <ji...@apache.org> on 2018/12/08 10:41:00 UTC
[jira] [Updated] (YARN-9096) Some GpuResourcePlugin and
ResourcePluginManager methods are synchronized unnecessarily
[ https://issues.apache.org/jira/browse/YARN-9096?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Szilard Nemeth updated YARN-9096:
---------------------------------
Attachment: YARN-9096.001.patch
> Some GpuResourcePlugin and ResourcePluginManager methods are synchronized unnecessarily
> ---------------------------------------------------------------------------------------
>
> Key: YARN-9096
> URL: https://issues.apache.org/jira/browse/YARN-9096
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Szilard Nemeth
> Assignee: Szilard Nemeth
> Priority: Major
> Attachments: YARN-9096.001.patch
>
>
> These methods are not used concurrently, they are part of the initialization code of NM that happens from one thread.
> This is the list of the call hierarchies:
> 1. GpuResourcePlugin.initialize + ResourcePluginManager.initialize
>
> {code:java}
> GpuResourcePlugin.initialize(Context) (org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.gpu) ResourcePluginManager.initialize(Context) (org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin) NodeManager.serviceInit(Configuration) (org.apache.hadoop.yarn.server.nodemanager){code}
>
>
> 2. GpuResourcePlugin.createResourceHandler:
>
> {code:java}
> GpuResourcePlugin.createResourceHandler(Context, CGroupsHandler, PrivilegedOperationExecutor) (org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.gpu) ResourceHandlerModule.addHandlersFromConfiguredResourcePlugins(List, Configuration, Context) (org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources) ResourceHandlerModule.initializeConfiguredResourceHandlerChain(Configuration, Context) (org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources) ResourceHandlerModule.getConfiguredResourceHandlerChain(Configuration, Context) (org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources) ContainerScheduler.serviceInit(Configuration) (org.apache.hadoop.yarn.server.nodemanager.containermanager.scheduler) LinuxContainerExecutor.init(Context) (org.apache.hadoop.yarn.server.nodemanager)
> {code}
>
> 3. GpuResourcePlugin.getNodeResourceHandlerInstance:
>
> {code:java}
> GpuResourcePlugin.getNodeResourceHandlerInstance() (org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.gpu)
> NodeStatusUpdaterImpl.updateConfiguredResourcesViaPlugins(Resource)(2 usages) (org.apache.hadoop.yarn.server.nodemanager)
> NodeStatusUpdaterImpl.serviceInit(Configuration) (org.apache.hadoop.yarn.server.nodemanager)
> {code}
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