Hello Ronald,
Since you have placed the file under HDFS, you might same change the path name
to:
val lines = sc.textFile("hdfs://user/taylor/Spark/Warehouse.java")
Sent from my iPhone
Pardon the dumb thumb typos :)
> On Feb 28, 2016, at 9:36 PM, Taylor, Ronald C <ronald.tay...@pnnl.gov> wrote:
>
>
> Hello folks,
>
> I am a newbie, and am running Spark on a small Cloudera CDH 5.5.1 cluster at
> our lab. I am trying to use the PySpark shell for the first time. and am
> attempting to duplicate the documentation example of creating an RDD which
> I called "lines" using a text file.
>
> I placed a a text file called Warehouse.java in this HDFS location:
>
> [rtaylor@bigdatann ~]$ hadoop fs -ls /user/rtaylor/Spark
> -rw-r--r-- 3 rtaylor supergroup 1155355 2016-02-28 18:09
> /user/rtaylor/Spark/Warehouse.java
> [rtaylor@bigdatann ~]$
>
> I then invoked sc.textFile()in the PySpark shell.That did not work. See
> below. Apparently a class is not found? Don't know why that would be the
> case. Any guidance would be very much appreciated.
>
> The Cloudera Manager for the cluster says that Spark is operating in the
> "green", for whatever that is worth.
>
> - Ron Taylor
>
> >>> lines = sc.textFile("file:///user/taylor/Spark/Warehouse.java")
>
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File
> "/opt/cloudera/parcels/CDH-5.5.1-1.cdh5.5.1.p0.11/lib/spark/python/pyspark/context.py",
> line 451, in textFile
> return RDD(self._jsc.textFile(name, minPartitions), self,
> File
> "/opt/cloudera/parcels/CDH-5.5.1-1.cdh5.5.1.p0.11/lib/spark/python/lib/py4j-0.8.2.1-src.zip/py4j/java_gateway.py",
> line 538, in __call__
> File
> "/opt/cloudera/parcels/CDH-5.5.1-1.cdh5.5.1.p0.11/lib/spark/python/pyspark/sql/utils.py",
> line 36, in deco
> return f(*a, **kw)
> File
> "/opt/cloudera/parcels/CDH-5.5.1-1.cdh5.5.1.p0.11/lib/spark/python/lib/py4j-0.8.2.1-src.zip/py4j/protocol.py",
> line 300, in get_return_value
> py4j.protocol.Py4JJavaError: An error occurred while calling o9.textFile.
> : java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.spark.rdd.RDDOperationScope$
> at org.apache.spark.SparkContext.withScope(SparkContext.scala:709)
> at org.apache.spark.SparkContext.textFile(SparkContext.scala:825)
> at
> org.apache.spark.api.java.JavaSparkContext.textFile(JavaSparkContext.scala:191)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:231)
> at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:379)
> at py4j.Gateway.invoke(Gateway.java:259)
> at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:133)
> at py4j.commands.CallCommand.execute(CallCommand.java:79)
> at py4j.GatewayConnection.run(GatewayConnection.java:207)
> at java.lang.Thread.run(Thread.java:745)
>
> >>>
