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Posted to user@spark.apache.org by lu...@sina.com on 2016/07/27 06:23:26 UTC
How to export a project to a JAR in Scala IDE for eclipse Correctly?
Hi there: I export a project into jar like this "right click my project->choose export ->java-> jar file-> next->choose "src/main/resouces" and ''src/main/scala"'-> clikc browse and choose a jar file export location-> choose overwrite it", and this jar is unable to run with "java -jar myjar.jar". It says "no main manifest attribute, in /opt/MyJar.jar". It seems the file MANIFEST.MF lost the main class info when I export the jar. I opened the MANIFEST.MF in my exported jar, and finds only below info:Manifest-Version: 1.0
However I checked the MANIFEST.MF in my project, it is like this:Manifest-Version: 1.0
Main-Class: org.abc.spark.streaming.Producer
Class-Path: lib/spark-core_2.10-1.6.1.jar ...........
in my class of producer, I didn't use spark, so I use java -jar to run it.
I also tried to export my project as a runnable jar, but my class can not be run as a java application, the run button is not able to click.
So could anyone share a hand?
--------------------------------
Thanks&Best regards!
San.Luo
Re: How to export a project to a JAR in Scala IDE for eclipse Correctly?
Posted by Sachin Mittal <sj...@gmail.com>.
Why don't you install sbt and try sbt assembly to create a scala jar.
You can using this jar to your spark submit jobs.
In case there are additional dependencies these can be passed as --jars
(comma separated jar paths) option to spark submit.
On Wed, Jul 27, 2016 at 11:53 AM, <lu...@sina.com> wrote:
> Hi there:
> I export a project into jar like this "right click my project->choose
> export ->java-> jar file-> next->choose "src/main/resouces" and
> ''src/main/scala"'-> clikc browse and choose a jar file export location->
> choose overwrite it", and this jar is unable to run with "java -jar
> myjar.jar". It says "no main manifest attribute, in /opt/MyJar.jar". It
> seems the file MANIFEST.MF lost the main class info when I export the jar.
> I opened the MANIFEST.MF in my exported jar, and finds only below info:
> Manifest-Version: 1.0
>
>
>
> However I checked the MANIFEST.MF in my project, it is like this:
> Manifest-Version: 1.0
> Main-Class: org.abc.spark.streaming.Producer
> Class-Path: lib/spark-core_2.10-1.6.1.jar ...........
>
> in my class of producer, I didn't use spark, so I use java -jar to run it.
>
> I also tried to export my project as a runnable jar, but my class can not
> be run as a java application, the run button is not able to click.
>
> So could anyone share a hand?
>
> --------------------------------
>
> Thanks&Best regards!
> San.Luo
>