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From "Wenchen Fan (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-21917) Remote http(s) resources is not supported in YARN mode
Date Tue, 19 Sep 2017 14:28:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-21917?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wenchen Fan reassigned SPARK-21917:
-----------------------------------

    Assignee: Saisai Shao

> Remote http(s) resources is not supported in YARN mode
> ------------------------------------------------------
>
>                 Key: SPARK-21917
>                 URL: https://issues.apache.org/jira/browse/SPARK-21917
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Submit, YARN
>    Affects Versions: 2.2.0
>            Reporter: Saisai Shao
>            Assignee: Saisai Shao
>            Priority: Minor
>             Fix For: 2.3.0
>
>
> In the current Spark, when submitting application on YARN with remote resources {{./bin/spark-shell
--jars http://central.maven.org/maven2/com/github/swagger-akka-http/swagger-akka-http_2.11/0.10.1/swagger-akka-http_2.11-0.10.1.jar
--master yarn-client -v}}, Spark will be failed with:
> {noformat}
> java.io.IOException: No FileSystem for scheme: http
> 	at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2586)
> 	at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2593)
> 	at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:91)
> 	at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2632)
> 	at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2614)
> 	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:370)
> 	at org.apache.hadoop.fs.Path.getFileSystem(Path.java:296)
> 	at org.apache.spark.deploy.yarn.Client.copyFileToRemote(Client.scala:354)
> 	at org.apache.spark.deploy.yarn.Client.org$apache$spark$deploy$yarn$Client$$distribute$1(Client.scala:478)
> 	at org.apache.spark.deploy.yarn.Client$$anonfun$prepareLocalResources$11$$anonfun$apply$6.apply(Client.scala:600)
> 	at org.apache.spark.deploy.yarn.Client$$anonfun$prepareLocalResources$11$$anonfun$apply$6.apply(Client.scala:599)
> 	at scala.collection.mutable.ArraySeq.foreach(ArraySeq.scala:74)
> 	at org.apache.spark.deploy.yarn.Client$$anonfun$prepareLocalResources$11.apply(Client.scala:599)
> 	at org.apache.spark.deploy.yarn.Client$$anonfun$prepareLocalResources$11.apply(Client.scala:598)
> 	at scala.collection.immutable.List.foreach(List.scala:381)
> 	at org.apache.spark.deploy.yarn.Client.prepareLocalResources(Client.scala:598)
> 	at org.apache.spark.deploy.yarn.Client.createContainerLaunchContext(Client.scala:848)
> 	at org.apache.spark.deploy.yarn.Client.submitApplication(Client.scala:173)
> {noformat}
> This is because {{YARN#client}} assumes resources must be on the Hadoop compatible FS,
also in the NM (https://github.com/apache/hadoop/blob/99e558b13ba4d5832aea97374e1d07b4e78e5e39/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/ContainerLocalizer.java#L245)
it will only use Hadoop compatible FS to download resources. So this makes Spark on YARN fail
to support remote http(s) resources.
> To solve this problem, there might be several options:
> * Download remote http(s) resources to local and add this local downloaded resources
to dist cache. The downside of this option is that remote resources will be uploaded again
unnecessarily.
> * Filter remote http(s) resources and add them with spark.jars or spark.files, to leverage
Spark's internal fileserver to distribute remote http(s) resources. The problem of this solution
is: for some resources which require to be available before application start may not work.
> * Leverage Hadoop's support http(s) file system (https://issues.apache.org/jira/browse/HADOOP-14383).
This is only worked in Hadoop 2.9+, and I think even we implement a similar one in Spark will
not be worked.



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