spark.yarn.jar (none) The location of the Spark jar file, in case overriding the default location is desired. By default, Spark on YARN will use a Spark jar installed locally, but the Spark jar can also be in a world-readable location on HDFS. This allows YARN to cache it on nodes so that it doesn't need to be distributed each time an application runs. To point to a jar on HDFS, for example, set this configuration to hdfs:///some/path.
spark.yarn.jar is used for spark run-time system jar, which is spark assembly jar, not the application jar (example-assembly jar). So in your case you upload the example-assembly jar into hdfs, in which spark system jars are not packed, so ExecutorLaucher cannot be found. Thanks Saisai On Wed, Jun 22, 2016 at 2:10 PM, 另一片天 <958943...@qq.com> wrote: > shihj@master:/usr/local/spark/spark-1.6.1-bin-hadoop2.6$ > ./bin/spark-submit --class org.apache.spark.examples.SparkPi --master > yarn-client --driver-memory 512m --num-executors 2 --executor-memory 512m > --executor-cores 2 > /user/shihj/spark_lib/spark-examples-1.6.1-hadoop2.6.0.jar 10 > Warning: Local jar > /user/shihj/spark_lib/spark-examples-1.6.1-hadoop2.6.0.jar does not exist, > skipping. > java.lang.ClassNotFoundException: org.apache.spark.examples.SparkPi > at java.net.URLClassLoader.findClass(URLClassLoader.java:381) > 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$.classForName(Utils.scala:174) > at > org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:689) > 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) > get error at once > ------------------ 原始邮件 ------------------ > *发件人:* "Yash Sharma";<yash...@gmail.com>; > *发送时间:* 2016年6月22日(星期三) 下午2:04 > *收件人:* "另一片天"<958943...@qq.com>; > *抄送:* "user"<user@spark.apache.org>; > *主题:* Re: Could not find or load main class > org.apache.spark.deploy.yarn.ExecutorLauncher > > How about supplying the jar directly in spark submit - > > ./bin/spark-submit \ >> --class org.apache.spark.examples.SparkPi \ >> --master yarn-client \ >> --driver-memory 512m \ >> --num-executors 2 \ >> --executor-memory 512m \ >> --executor-cores 2 \ >> /user/shihj/spark_lib/spark-examples-1.6.1-hadoop2.6.0.jar > > > On Wed, Jun 22, 2016 at 3:59 PM, 另一片天 <958943...@qq.com> wrote: > >> i config this para at spark-defaults.conf >> spark.yarn.jar >> hdfs://master:9000/user/shihj/spark_lib/spark-examples-1.6.1-hadoop2.6.0.jar >> >> then ./bin/spark-submit --class org.apache.spark.examples.SparkPi >> --master yarn-client --driver-memory 512m --num-executors 2 >> --executor-memory 512m --executor-cores 2 10: >> >> >> >> - Error: Could not find or load main class >> org.apache.spark.deploy.yarn.ExecutorLauncher >> >> but i don't config that para ,there no error why???that para is only >> avoid Uploading resource file(jar package)?? >> > >
