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https://issues.apache.org/jira/browse/SPARK-32022?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Hyukjin Kwon resolved SPARK-32022.
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Resolution: Invalid
> Can many executors share one gpu for spark3.0?
> ----------------------------------------------
>
> Key: SPARK-32022
> URL: https://issues.apache.org/jira/browse/SPARK-32022
> Project: Spark
> Issue Type: Question
> Components: Spark Core
> Affects Versions: 3.0.0
> Environment: spark3.0 + Hadoop3 + yarn cluster
> Reporter: liucheng
> Priority: Major
>
> hi, I want to run mang executors（for example, 2） in a server with only one
> GPU card，I tested spark3.0 in yarn cluster mode with the following config：
> spark-shell --conf spark.executor.resource.gpu.amount=0.5
>
> Then ，I find the following errors：
>
> 20/06/18 16:24:46 [main] {color:#FF0000}ERROR{color} SparkContext: Error
> initializing SparkContext.
> java.lang.NumberFormatException:{color:#FF0000} For input string: "0.5"{color}
> at
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
> at java.lang.Integer.parseInt(Integer.java:580)
> at java.lang.Integer.parseInt(Integer.java:615)
> at scala.collection.immutable.StringLike.toInt(StringLike.scala:304)
> at scala.collection.immutable.StringLike.toInt$(StringLike.scala:304)
> at scala.collection.immutable.StringOps.toInt(StringOps.scala:33)
> at
> org.apache.spark.resource.ResourceUtils$.parseResourceRequest(ResourceUtils.scala:142)
> at
> org.apache.spark.resource.ResourceUtils$.$anonfun$parseAllResourceRequests$1(ResourceUtils.scala:159)
> at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:238)
> at scala.collection.mutable.ArraySeq.foreach(ArraySeq.scala:75)
> at scala.collection.TraversableLike.map(TraversableLike.scala:238)
> at scala.collection.TraversableLike.map$(TraversableLike.scala:231)
> at scala.collection.AbstractTraversable.map(Traversable.scala:108)
> at
> org.apache.spark.resource.ResourceUtils$.parseAllResourceRequests(ResourceUtils.scala:159)
> at
> org.apache.spark.SparkContext$.checkResourcesPerTask$1(SparkContext.scala:2773)
> at
> org.apache.spark.SparkContext$.org$apache$spark$SparkContext$$createTaskScheduler(SparkContext.scala:2921)
> at org.apache.spark.SparkContext.<init>(SparkContext.scala:528)
> at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2555)
> at
> org.apache.spark.sql.SparkSession$Builder.$anonfun$getOrCreate$1(SparkSession.scala:931)
> at scala.Option.getOrElse(Option.scala:189)
>
> 。。。。
>
> My question：for spark3.0 Can one gpu card support many executors ?
> Thank you!
>
>
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