ClassNotFoundException: org.apache.spark.examples.SparkPi

bin/spark-submit \
> --class org.apache.spark.examples.SparkPi \
> --master yarn \
> --deploy-mode client \
> ./examples/jars/spark-examples_2.11-2.1.1.jar \
> 100

出现以下问题
java.lang.ClassNotFoundException: org.apache.spark.examples.SparkPi
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.apache.spark.util.Utils . c l a s s F o r N a m e ( U t i l s . s c a l a : 229 ) a t o r g . a p a c h e . s p a r k . d e p l o y . S p a r k S u b m i t .classForName(Utils.scala:229) at org.apache.spark.deploy.SparkSubmit .classForName(Utils.scala:229)atorg.apache.spark.deploy.SparkSubmit.org a p a c h e apache apachespark d e p l o y deploy deploySparkSubmit$ r u n M a i n ( S p a r k S u b m i t . s c a l a : 700 ) a t o r g . a p a c h e . s p a r k . d e p l o y . S p a r k S u b m i t runMain(SparkSubmit.scala:700) at org.apache.spark.deploy.SparkSubmit runMain(SparkSubmit.scala:700)atorg.apache.spark.deploy.SparkSubmit.doRunMain 1 ( S p a r k S u b m i t . s c a l a : 187 ) a t o r g . a p a c h e . s p a r k . d e p l o y . S p a r k S u b m i t 1(SparkSubmit.scala:187) at org.apache.spark.deploy.SparkSubmit 1(SparkSubmit.scala:187)atorg.apache.spark.deploy.SparkSubmit.submit(SparkSubmit.scala:212)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:126)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)

目前不知道怎么解决 呃呃呃

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