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https://issues.apache.org/jira/browse/SPARK-29762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16972755#comment-16972755
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Thomas Graves commented on SPARK-29762:
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But like you mention, if we were to support something like that, then the
default of 1 when task requirement wasn't specified would be an issue.
> GPU Scheduling - default task resource amount to 1
> --------------------------------------------------
>
> Key: SPARK-29762
> URL: https://issues.apache.org/jira/browse/SPARK-29762
> Project: Spark
> Issue Type: Story
> Components: Spark Core
> Affects Versions: 3.0.0
> Reporter: Thomas Graves
> Priority: Major
>
> Default the task level resource configs (for gpu/fpga, etc) to 1. So if the
> user specifies the executor resource then to make it more user friendly lets
> have the task resource config default to 1. This is ok right now since we
> require resources to have an address. It also matches what we do for the
> spark.task.cpus configs.
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