[SPARK-23296][YARN] Include stacktrace in YARN-app diagnostic

## What changes were proposed in this pull request? Include stacktrace in the diagnostics message upon abnormal unregister from RM ## How was this patch tested? Tested with a failing job, and confirmed a stacktrace in the client output and YARN webUI. Author: Gera Shegalov <[email protected]> Closes #20470 from gerashegalov/gera/stacktrace-diagnostics.
apache · Feb 1, 2018 · 032c11b · 032c11b
1 parent 4bcfdef
commit 032c11b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala b/resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala
@@ -30,6 +30,7 @@ import scala.util.control.NonFatal
 
 import org.apache.hadoop.fs.{FileSystem, Path}
 import org.apache.hadoop.security.UserGroupInformation
+import org.apache.hadoop.util.StringUtils
 import org.apache.hadoop.yarn.api._
 import org.apache.hadoop.yarn.api.records._
 import org.apache.hadoop.yarn.conf.YarnConfiguration
@@ -718,7 +719,7 @@ private[spark] class ApplicationMaster(args: ApplicationMasterArguments) extends
                 logError("User class threw exception: " + cause, cause)
                 finish(FinalApplicationStatus.FAILED,
                   ApplicationMaster.EXIT_EXCEPTION_USER_CLASS,
-                  "User class threw exception: " + cause)
+                  "User class threw exception: " + StringUtils.stringifyException(cause))
             }
             sparkContextPromise.tryFailure(e.getCause())
         } finally {