Zeppelin does not load maven jar - maven

Question

Apache Zeppelin Version 0.7.1
%dep
z.reset() // clean up previously added artifact and repository
// add maven repository
z.addRepo("Spark Cassandra Connector 2.0.10").url("https://mvnrepository.com/artifact/com.datastax.spark/spark-cassandra-connector")
// add artifact recursively
// z.load("groupId:artifactId:version")
z.load("com.datastax.spark:spark-cassandra-connector_2.11:2.0.10")
java.lang.NullPointerException
at org.sonatype.aether.impl.internal.DefaultRepositorySystem.resolveDependencies(DefaultRepositorySystem.java:352)
at org.apache.zeppelin.spark.dep.SparkDependencyContext.fetchArtifactWithDep(SparkDependencyContext.java:171)
at org.apache.zeppelin.spark.dep.SparkDependencyContext.fetch(SparkDependencyContext.java:121)
at org.apache.zeppelin.spark.DepInterpreter.interpret(DepInterpreter.java:245)
at org.apache.zeppelin.interpreter.LazyOpenInterpreter.interpret(LazyOpenInterpreter.java:95)
at org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:490)
at org.apache.zeppelin.scheduler.Job.run(Job.java:175)
at org.apache.zeppelin.scheduler.FIFOScheduler$1.run(FIFOScheduler.java:139)
at java.util.concurrent.Executors$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:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
The following doesn't seem to be helpful:
apache zeppelin additional repository import
In https://zeppelin.apache.org/docs/0.7.1/interpreter/spark.html, it gives an example of setting zeppelin.dep.additionalRemoteRepository to http://dl.bintray.com/spark-packages/maven, but this repo doesn't have the version of jar I need.
https://zeppelin.apache.org/docs/0.7.1/interpreter/spark.html#3-dynamic-dependency-loading-via-sparkdep-interpreter
Zeppelin dynamic dependency loading fails on os-maven-plugin
Now I'm getting
%dep
z.load("com.datastax.spark:spark-cassandra-connector_2.11:2.0.10")
org.sonatype.aether.resolution.DependencyResolutionException: Could not find artifact com.datastax.spark:spark-cassandra-connector_2.11:jar:2.0.10 in central (https://repo1.maven.org/maven2/)

Answer 1

I need to update the maven reposition url from http to https in zeppelin-env.sh
export ZEPPELIN_INTERPRETER_DEP_MVNREPO="https://repo1.maven.org/maven2/"
There are also other non-generic changes specific to our build system (Jenkins pipeline)
If you have control over the server, it would be much easier to just download the jar you need (i.e. "groupArtifactVersion": "com.datastax.spark:spark-cassandra-connector_2.11:2.0.10",), then load the dependency from disk, like:
%dep
z.load("/opt/zeppelin/spark-cassandra-connector-assembly/spark-cassandra-connector-assembly.jar")