Jupyter notebook运行Spark+Scala

    今天在intellij调试spark的时候感觉每次有新的一段代码，都要重新跑一遍，如果用spark-shell，感觉也不是特别方便，如果能像python那样，使用jupyter notebook进行编程就很方便了，同时也适合代码展示，网上查了一下，试了一下，碰到了很多坑，有些是旧的版本，还有些是版本不同导致错误，这里就记录下来安装的过程。

1.运行环境

硬件：Mac

事先装好：Jupyter notebook，spark2.1.0，scala 2.11.8 (这个版本很重要，关系到后面的安装）

2.安装

2.1.scala kernel

从github下载

git clone https://github.com/jupyter-scala/jupyter-scala.git

进入下载的jupyter-scala目录下，运行

bash jupyter-scala

然后查看

jupyter kernelspec list

表示scala已经嵌入到jupyter notebook

2.2.spark kernel

这个也比较好装，但是要注意版本问题，我们用的是toree来装的，首先要安装toree

网上的教程通常直接

pip install toree

但是这个下载的是0.1.0版本，该版本的话问题是，后面装spark kernel后，在jupyter运行spark的时候，默认选的是scala2.10.4版本，会有以下的错误

[I 03:15:16.677 NotebookApp] Kernel started: 94a63354-d294-4de7-a12c-2e05905e0c45
Starting Spark Kernel with SPARK_HOME=/usr/local/spark
16/11/20 03:15:18 [INFO] o.a.t.Main$$anon$1 - Kernel version: 0.1.0.dev8-incubating-SNAPSHOT
16/11/20 03:15:18 [INFO] o.a.t.Main$$anon$1 - Scala version: Some(2.10.4)
16/11/20 03:15:18 [INFO] o.a.t.Main$$anon$1 - ZeroMQ (JeroMQ) version: 3.2.2
16/11/20 03:15:18 [INFO] o.a.t.Main$$anon$1 - Initializing internal actor system
Exception in thread "main" java.lang.NoSuchMethodError: scala.collection.immutable.HashSet$.empty()Lscala/collection/immutable/HashSet;
        at akka.actor.ActorCell$.(ActorCell.scala:336)
        at akka.actor.ActorCell$.(ActorCell.scala)
        at akka.actor.RootActorPath.$div(ActorPath.scala:185)
        at akka.actor.LocalActorRefProvider.(ActorRefProvider.scala:465)
        at akka.actor.LocalActorRefProvider.(ActorRefProvider.scala:453)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at akka.actor.ReflectiveDynamicAccess$$anonfun$createInstanceFor$2.apply(DynamicAccess.scala:78)
        at scala.util.Try$.apply(Try.scala:192)
        at akka.actor.ReflectiveDynamicAccess.createInstanceFor(DynamicAccess.scala:73)
        at akka.actor.ReflectiveDynamicAccess$$anonfun$createInstanceFor$3.apply(DynamicAccess.scala:84)
        at akka.actor.ReflectiveDynamicAccess$$anonfun$createInstanceFor$3.apply(DynamicAccess.scala:84)
        at scala.util.Success.flatMap(Try.scala:231)
        at akka.actor.ReflectiveDynamicAccess.createInstanceFor(DynamicAccess.scala:84)
        at akka.actor.ActorSystemImpl.liftedTree1$1(ActorSystem.scala:585)
        at akka.actor.ActorSystemImpl.(ActorSystem.scala:578)
        at akka.actor.ActorSystem$.apply(ActorSystem.scala:142)
        at akka.actor.ActorSystem$.apply(ActorSystem.scala:109)
        at org.apache.toree.boot.layer.StandardBareInitialization$class.createActorSystem(BareInitialization.scala:71)
        at org.apache.toree.Main$$anon$1.createActorSystem(Main.scala:35)
        at org.apache.toree.boot.layer.StandardBareInitialization$class.initializeBare(BareInitialization.scala:60)
        at org.apache.toree.Main$$anon$1.initializeBare(Main.scala:35)
        at org.apache.toree.boot.KernelBootstrap.initialize(KernelBootstrap.scala:72)
        at org.apache.toree.Main$delayedInit$body.apply(Main.scala:40)
        at scala.Function0$class.apply$mcV$sp(Function0.scala:34)
        at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)
        at scala.App$$anonfun$main$1.apply(App.scala:76)
        at scala.App$$anonfun$main$1.apply(App.scala:76)
        at scala.collection.immutable.List.foreach(List.scala:381)
        at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:35)
        at scala.App$class.main(App.scala:76)
        at org.apache.toree.Main$.main(Main.scala:24)
        at org.apache.toree.Main.main(Main.scala)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:736)
        at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:185)
        at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:210)
        at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:124)
        at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
[W 03:15:26.738 NotebookApp] Timeout waiting for kernel_info reply from 94a63354-d294-4de7-a12c-2e05905e0c45

这个错误太可怕了，就是版本不对，因为spark2.1.0对应的是scala2.11版本的

所以要用下面的方式下载0.2.0版本

pip install https://dist.apache.org/repos/dist/dev/incubator/toree/0.2.0/snapshots/dev1/toree-pip/toree-0.2.0.dev1.tar.gz

后面就可以安装spark kernel了

jupyter toree install --interpreters=Scala --spark_home=/usr/local/Cellar/apache-spark/2.1.0/libexec --user --kernel_name=apache_toree --interpreters=PySpark,SparkR,Scala,SQL

其中spark_home指的是你的spark的安装目录，记住这个安装目录必须到spark中有python之前，比如我的spark中的python（spark中的python文件夹，不是我们自己装的那个）在

/usr/local/Cellar/apache-spark/2.1.0/libexec

查看结果

jupyter kernelspec list

安装成功

3.打开jupyter notebook查看效果

有这么多选项，可以快乐的用jupyter notebook进行spark了