Archives of Support Questions (Read Only)

kctan6 · ‎06-15-2016

Hi, I'm experimenting with using Zeppelin / Spark to perform geo-location on IP addresses using the Maxmind GeoIP library. I am encountering a NoSuchMethodError which from reading the forums appears to be a dependency issue with the method not being in certain versions of the jackson lib. How can I go about identifying and resolving this dependency issue in Zeppelin? I load geoip2 via %dep and have removed the older versions of the jackson lib from zeppelin/lib/lib to no avail. Thanks!

%dep
z.addRepo("geoip2").url("http://mvnrepository.com/artifact/com.maxmind.geoip2/geoip2/2.7.0")
z.load("com.maxmind.geoip2:geoip2:2.7.0")

java.lang.NoSuchMethodError: com.fasterxml.jackson.databind.node.ArrayNode.<init>(Lcom/fasterxml/jackson/databind/node/JsonNodeFactory;Ljava/util/List;)V

phargis · ‎06-16-2016

Spark includes some Jackson libraries as it's own dependencies, including this one:

   <fasterxml.jackson.version>2.6.5</fasterxml.jackson.version>

Therefore, if your additional third-party library also includes this library with a different version, then the classloader will get errors. You can use the Maven Shade plugin to "relocate" the third-party jar, as described here:

https://maven.apache.org/plugins/maven-shade-plugin/examples/class-relocation.html

Here is an example of relocating the "com.fasterxml.jackson" library:

http://stackoverflow.com/questions/34764732/relocating-fastxml-jackson-classes-to-my-package-fastxml...

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rajkumar_singh · ‎06-15-2016

seems you have library mismatch for jackson, could you please verify which jars contain this class com.fasterxml.jackson.databind.node.ArrayNode,isolate those jars and maintain a single version of jars available across the classpath. if you still want to use to different jar version then please consider jar shading.

kctan6 · ‎06-15-2016

Hi @Rajkumar Singh, I believe the jar in question is jackson-databind. For Spark / Zeppelin which classpath / directories should I be look at?

rajkumar_singh · ‎06-15-2016

please look into zeepline lib folder.

kctan6 · ‎06-15-2016

Yeah have tried that but still encountering the same error

rajkumar_singh · ‎06-15-2016

@KCcan you lookout for these two jars, i m suspecting that zepplien spark dependency is causing this issue.

zeppelin/lib/interpreter/spark/dep/zeppelin-spark-dependencies-0.6.0.2.4.0.0-169.jar

/zeppelin/lib/interpreter/flink/jackson-databind-2.4.2.jar

kctan6 · ‎06-15-2016

@Rajkumar Singh yeah i removed the jackson-databind jar in the flink folder, the zeppelin-spark-dependencies jar is still there. How do I determine which version / jar is being used by Zeppelin / Spark at run-time?

rajkumar_singh · ‎06-15-2016

this jar is used by the zeppelin server at runtime zeppelin/lib/interpreter/spark/dep/zeppelin-spark-dependencies-0.6.0.2.4.0.0-169.jar, will be good if you have your version of jar shaded.

kctan6 · ‎06-16-2016

thanks @Rajkumar Singh for the suggestion. are you able to provide some instructions or direct me to some resources on how I should shade the jar?

rajkumar_singh · ‎06-16-2016

@KC could you please follow this tutorial http://www.mkyong.com/maven/create-a-fat-jar-file-maven-shade-plugin/

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Archives of Support Questions (Read Only)

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