Hi Abe,
I'm new to Spark as well, so someone else could answer better. A few
thoughts which may or may not be the right line of thinking..
1) Spark properties can be set on the SparkConf, and with flags in
spark-submit, but settings on SparkConf take precedence. I think your jars
flag for spark-submit may be redundant.
1) Is there a chance that stanford-corenlp-3.5.0.jar relies on other
dependencies? I could be wrong, but perhaps if there is no other reason not
to, try building your application as an uber-jar with a build tool like
Maven, which will package the whole transitive jar. You can find
stanford-corenlp on maven central .. I think you would add the below
dependencies to your pom.xml. After building simple-project-1.0.jar with
these dependencies, you would not set jars on the sc or jar flags on
spark-submit.
<dependencies>
<dependency>
<groupId>edu.stanford.nlp</groupId>
<artifactId>stanford-corenlp</artifactId>
<version>3.5.0</version>
</dependency>
<dependency>
<groupId>edu.stanford.nlp</groupId>
<artifactId>stanford-corenlp</artifactId>
<version>3.5.0</version>
<classifier>models</classifier>
</dependency>
</dependencies>
HTH.
Deb
On Tue, Feb 10, 2015 at 1:12 PM, Abe Handler <akh2...@gmail.com> wrote:
> I am new to spark. I am trying to compile and run a spark application that
> requires classes from an (external) jar file on my local machine. If I open
> the jar (on ~/Desktop) I can see the missing class in the local jar but
> when
> I run spark I get
>
> NoClassDefFoundError: edu/stanford/nlp/ie/AbstractSequenceClassifier
>
> I add the jar to the spark context like this
>
> String[] jars = {"/home/pathto/Desktop/stanford-corenlp-3.5.0.jar"};
> SparkConf conf = new SparkConf().setAppName("Simple
> Application").setJars(jars);
> Then I try to run a submit script like this
>
> /home/me/Downloads/spark-1.2.0-bin-hadoop2.4/bin/spark-submit \
> --class "SimpleApp" \
> --master local[4] \
> target/simple-project-1.0.jar \
> --jars local[4] /home/abe/Desktop/stanford-corenlp-3.5.0.jar
> and hit the NoClassDefFoundError.
>
> I get that this means that the worker threads can't find the class from the
> jar. But I am not sure what I am doing wrong. I have tried different
> syntaxes for the last line (below) but none works.
>
> --addJars local[4] /home/abe/Desktop/stanford-corenlp-3.5.0.jar
> --addJars local:/home/abe/Desktop/stanford-corenlp-3.5.0.jar
> --addJars local:/home/abe/Desktop/stanford-corenlp-3.5.0.jar
>
> How can I fix this error?
>
>
>
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