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https://issues.apache.org/jira/browse/SPARK-13394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15154251#comment-15154251
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Minwoo Kang edited comment on SPARK-13394 at 2/19/16 2:09 PM:
--------------------------------------------------------------

I am so sorry for doesn't read the url before post this issue.
Do I have to delete this issue?

Yes, I look SimpleUserGroupsMapping class up in hadoop sources. But 
SimpleUserGroupsMapping does not exist.
I do not have no idea. Why does spark need SimpleUserGroupsMapping class.


was (Author: minwoo.kang):
I am so sorry for doesn't read the url before post this issue.
Do I have to delete this issue?

Yes, I look SimpleUserGroupsMapping class up in hadoop sources. But 
SimpleUserGroupsMapping does not exist.

> What is "java.lang.RuntimeException: java.lang.ClassNotFoundException: Class 
> org.apache.hadoop.security.SimpleUserGroupsMapping not found"
> ------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-13394
>                 URL: https://issues.apache.org/jira/browse/SPARK-13394
>             Project: Spark
>          Issue Type: Question
>          Components: Spark Shell
>    Affects Versions: 1.6.0
>         Environment: Hadoop 2.7.1, r2
>            Reporter: Minwoo Kang
>            Priority: Minor
>
> I want to deploy spark on yarn.
> So I execute follow script
> {code}
> ./bin/spark-shell --master yarn-client
> {code}
> But Spark shell throw RuntimeException
> Error Description
> {code}
> Exception in thread "main" java.lang.RuntimeException: 
> java.lang.RuntimeException: java.lang.ClassNotFoundException: Class 
> org.apache.hadoop.security.SimpleUserGroupsMapping not found
>         at 
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2106)
>         at org.apache.hadoop.security.Groups.<init>(Groups.java:70)
>         at org.apache.hadoop.security.Groups.<init>(Groups.java:66)
>         at 
> org.apache.hadoop.security.Groups.getUserToGroupsMappingService(Groups.java:280)
>         at 
> org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:271)
>         at 
> org.apache.hadoop.security.UserGroupInformation.ensureInitialized(UserGroupInformation.java:248)
>         at 
> org.apache.hadoop.security.UserGroupInformation.loginUserFromSubject(UserGroupInformation.java:763)
>         at 
> org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:748)
>         at 
> org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:621)
>         at 
> org.apache.spark.util.Utils$$anonfun$getCurrentUserName$1.apply(Utils.scala:2136)
>         at 
> org.apache.spark.util.Utils$$anonfun$getCurrentUserName$1.apply(Utils.scala:2136)
>         at scala.Option.getOrElse(Option.scala:120)
>         at org.apache.spark.util.Utils$.getCurrentUserName(Utils.scala:2136)
>         at org.apache.spark.SecurityManager.<init>(SecurityManager.scala:214)
>         at org.apache.spark.repl.SparkIMain.<init>(SparkIMain.scala:118)
>         at 
> org.apache.spark.repl.SparkILoop$SparkILoopInterpreter.<init>(SparkILoop.scala:187)
>         at 
> org.apache.spark.repl.SparkILoop.createInterpreter(SparkILoop.scala:217)
>         at 
> org.apache.spark.repl.SparkILoop$$anonfun$org$apache$spark$repl$SparkILoop$$process$1.apply$mcZ$sp(SparkILoop.scala:949)
>         at 
> org.apache.spark.repl.SparkILoop$$anonfun$org$apache$spark$repl$SparkILoop$$process$1.apply(SparkILoop.scala:945)
>         at 
> org.apache.spark.repl.SparkILoop$$anonfun$org$apache$spark$repl$SparkILoop$$process$1.apply(SparkILoop.scala:945)
>         at 
> scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
>         at 
> org.apache.spark.repl.SparkILoop.org$apache$spark$repl$SparkILoop$$process(SparkILoop.scala:945)
>         at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:1059)
>         at org.apache.spark.repl.Main$.main(Main.scala:31)
>         at org.apache.spark.repl.Main.main(Main.scala)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>         at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:606)
>         at 
> org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731)
>         at 
> org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181)
>         at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206)
>         at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121)
>         at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
> Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: 
> Class org.apache.hadoop.security.SimpleUserGroupsMapping not found
>         at 
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2074)
>         at 
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2098)
>         ... 33 more
> Caused by: java.lang.ClassNotFoundException: Class 
> org.apache.hadoop.security.SimpleUserGroupsMapping not found
>         at 
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:1980)
>         at 
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2072)
>         ... 34 more
> 16/02/19 22:29:51 INFO util.ShutdownHookManager: Shutdown hook called
> 16/02/19 22:29:51 INFO util.ShutdownHookManager: Deleting directory 
> /tmp/spark-
> {code}
> Would you mind explaining how to fix this error and how to deploy spark on 
> yarn step by step?



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