How to run Spark on Zeppelin to analyze xml files - scala

Question

I am able to run Spark shell by bin/spark-shell --packages com.databricks:spark-xml_2.11:0.3.0 to analize xml files, for example:
import org.apache.spark.sql.SQLContext
val sqlContext = new SQLContext(sc)
val df = sqlContext.read
.format("com.databricks.spark.xml")
.option("rowTag", "book")
.load("books.xml")
but how can I run Zeppelin to do it so. Does Zeppelin need some parameter at start to import com.databricks.spark.xml?
Now I am getting:
java.lang.RuntimeException: Failed to load class for data source:
com.databricks.spark.xml at
scala.sys.package$.error(package.scala:27) at
org.apache.spark.sql.sources.ResolvedDataSource$.lookupDataSource(ddl.scala:220)
at
org.apache.spark.sql.sources.ResolvedDataSource$.apply(ddl.scala:233)
at
org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:114)
at
org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:104)
at $iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.(:26) at
$iwC$$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.(:31) at
$iwC$$iwC$$iwC$$iwC$$iwC$$iwC.(:33) at
$iwC$$iwC$$iwC$$iwC$$iwC.(:35) at
$iwC$$iwC$$iwC$$iwC.(:37) at
$iwC$$iwC$$iwC.(:39) at $iwC$$iwC.(:41)
at $iwC.(:43) at (:45) at
.(:49) at .() at
.(:7) at .() at $print()
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497) at
org.apache.spark.repl.SparkIMain$ReadEvalPrint.call(SparkIMain.scala:1065)
at
org.apache.spark.repl.SparkIMain$Request.loadAndRun(SparkIMain.scala:1338)
at
org.apache.spark.repl.SparkIMain.loadAndRunReq$1(SparkIMain.scala:840)
at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:871)
at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:819)
at
org.apache.zeppelin.spark.SparkInterpreter.interpretInput(SparkInterpreter.java:709)
at
org.apache.zeppelin.spark.SparkInterpreter.interpret(SparkInterpreter.java:674)
at
org.apache.zeppelin.spark.SparkInterpreter.interpret(SparkInterpreter.java:667)
at
org.apache.zeppelin.interpreter.ClassloaderInterpreter.interpret(ClassloaderInterpreter.java:57)
at
org.apache.zeppelin.interpreter.LazyOpenInterpreter.interpret(LazyOpenInterpreter.java:93)
at
org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:300)
at org.apache.zeppelin.scheduler.Job.run(Job.java:169) at
org.apache.zeppelin.scheduler.FIFOScheduler$1.run(FIFOScheduler.java:134)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266) at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

Answer 1

In Zeppelin, you need to call for those dependencies before creating the SparkContext.
In a separate cell you add and run the following
%dep
z.reset()
z.addRepo("Spark Packages Repo").url("http://dl.bintray.com/spark-packages/maven")
z.load("com.databricks:spark-xml_2.11:0.3.0")
If this gives you an error from the type : "You have to add dependencies before starting your SparkContext" just restart the interpreter or Zeppelin.

Answer 2

The above solution is valid for older versions of zeppelin. For version >0.9 the %dep has been removed. Please refer to the latest doc