I'm submitting spark jobs on a livy (0.6.0) session through Curl
The jobs are a big jar file that extends the Job interface just exactly like this : https://stackoverflow.com/a/49220879/8557851
Actually when running this code using this curl command :
curl -X POST -d '{"kind": "spark","files":["/config.json"],"jars":["/myjar.jar"],"driverMemory":"512M","executorMemory":"512M"}' -H "Content-Type: application/json" localhost:8998/sessions/
When it comes to the code it is exactly like the answer shown above :
package com.mycompany.test
import org.apache.livy.{Job, JobContext}
import org.apache.spark._
import org.apache.livy.scalaapi._
object Test extends Job[Boolean]{
override def call(jc: JobContext): Boolean = {
val sc = jc.sc
sc.getConf.getAll.foreach(println)
return true
}
As for the error it is a java Nullpointer exception as shown below
Exception in thread "main" java.lang.NullPointerException
at org.apache.livy.rsc.driver.JobWrapper.cancel(JobWrapper.java:90)
at org.apache.livy.rsc.driver.RSCDriver.shutdown(RSCDriver.java:127)
at org.apache.livy.rsc.driver.RSCDriver.run(RSCDriver.java:356)
at org.apache.livy.rsc.driver.RSCDriverBootstrapper.main(RSCDriverBootstrapper.java:93)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.spark.deploy.JavaMainApplication.start(SparkApplication.scala:52)
at org.apache.spark.deploy.SparkSubmit.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:849)
at org.apache.spark.deploy.SparkSubmit.doRunMain$1(SparkSubmit.scala:167)
at org.apache.spark.deploy.SparkSubmit.submit(SparkSubmit.scala:195)
at org.apache.spark.deploy.SparkSubmit.doSubmit(SparkSubmit.scala:86)
at org.apache.spark.deploy.SparkSubmit$$anon$2.doSubmit(SparkSubmit.scala:924)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:933)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
as the output excepted is to start running the job in the jar
As @yegeniy mentioned above the problem came from LIVY-636 you will need to the build the Jar without Scala libraries and everything will work smoothly