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From Yash Sharma <yash...@gmail.com>
Subject Re: Could not find or load main class org.apache.spark.deploy.yarn.ExecutorLauncher
Date Wed, 22 Jun 2016 06:18:53 GMT
Try providing the jar with the hdfs prefix. Its probably just because its
not able to find the jar on all nodes.

hdfs://master:9000/user/shihj/spark_lib/spark-examples-1.6.1-hadoop2.6.0.jar

Is it able to run on local mode ?

On Wed, Jun 22, 2016 at 4:14 PM, Saisai Shao <sai.sai.shao@gmail.com> wrote:

> 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 <958943172@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";<yash360@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"<958943172@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 <958943172@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)??
>>>
>>
>>
>

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