Not able to print stack trace in Spark - apache-spark

Question

I am running below code , in the Failure part , i am printing exception stack trace as INFO in yarn log . My code has syntax error in sql so that an exception will be generated .But when i see yarn log it shows some thing unexpected as below saying "call methods on a stopped SparkContext" . Need help on this , If i am doing anything wrong .
Code Snipet:-
var ret:String= Try {
DbUtil.dropTable("cls_mkt_tracker_split_rownum", batchDatabase)
SparkEnvironment.hiveContext.sql(
s"""CREATE TABLE ${batchDatabase}.CLS_MKT_TRACKER_SPLIT_ROWNUM
AS SELECT ROW_NUMBER() OVER(PARTITION BY XREF_IMS_PAT_NBR,MOLECULE ORER BY IMS_DSPNSD_DT ) AS ROWNUM,*
FROM ${batchDatabase}.CLS_MKT_TRACKER_SPLIT
""")
true
} match {
case Success (b:Boolean) => ""
case Failure (t :Throwable) => logger.info("I am in failure" + t.getMessage + t.getStackTraceString) ; "failure return"
}
Yarn Log:-
16/12/13 11:19:42 INFO SessionState: No Tez session required at this point. hive.execution.engine=mr.
16/12/13 11:19:43 INFO DateAdjustment: I am in failureCannot call methods on a stopped SparkContext.
This stopped SparkContext was created at:
org.apache.spark.SparkContext.<init>(SparkContext.scala:83)
SparkEnvironment$.<init>(SparkEnvironment.scala:12)
SparkEnvironment$.<clinit>(SparkEnvironment.scala)
DbUtil$.dropTable(DbUtil.scala:8)
DateAdjustment$$anonfun$1.apply$mcZ$sp(DateAdjustment.scala:126)
DateAdjustment$$anonfun$1.apply(DateAdjustment.scala:125)
DateAdjustment$$anonfun$1.apply(DateAdjustment.scala:125)
scala.util.Try$.apply(Try.scala:161)
DateAdjustment$delayedInit$body.apply(DateAdjustment.scala:125)
scala.Function0$class.apply$mcV$sp(Function0.scala:40)
scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)
scala.App$$anonfun$main$1.apply(App.scala:71)
scala.App$$anonfun$main$1.apply(App.scala:71)
scala.collection.immutable.List.foreach(List.scala:318)
scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:32)
scala.App$class.main(App.scala:71)
DateAdjustment$.main(DateAdjustment.scala:14)
DateAdjustment.main(DateAdjustment.scala)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
The currently active SparkContext was created at:
(No active SparkContext.)
org.apache.spark.SparkContext.org$apache$spark$SparkContext$$assertNotStopped(SparkContext.scala:107)

Answer 1

I investigated and found , at one place of my application, SC.stop() has been called and it was causing the issue .