Spark.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "6846592d",
   "metadata": {},
   "outputs": [],
   "source": [
    "import pyspark"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "fa8be2f6",
   "metadata": {},
   "outputs": [],
   "source": [
    "from pyspark.sql import SparkSession"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "a6325e03",
   "metadata": {},
   "outputs": [],
   "source": [
    "spark = SparkSession.builder.getOrCreate()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "85725ae4",
   "metadata": {},
   "outputs": [],
   "source": [
    "rdd =spark.sparkContext.parallelize([(\"mathan\",1),(\"venkey\",2)])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "5de639c9",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[('mathan', 1), ('venkey', 2)]"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "rdd.collect()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "e926df37",
   "metadata": {},
   "outputs": [
    {
     "ename": "Py4JJavaError",
     "evalue": "An error occurred while calling z:org.apache.spark.api.python.PythonRDD.collectAndServe.\n: org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 1.0 failed 1 times, most recent failure: Lost task 0.0 in stage 1.0 (TID 8) (MathanA7S executor driver): java.io.IOException: Cannot run program \"python3\": CreateProcess error=2, The system cannot find the file specified\r\n\tat java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)\r\n\tat org.apache.spark.api.python.PythonWorkerFactory.createSimpleWorker(PythonWorkerFactory.scala:166)\r\n\tat org.apache.spark.api.python.PythonWorkerFactory.create(PythonWorkerFactory.scala:108)\r\n\tat org.apache.spark.SparkEnv.createPythonWorker(SparkEnv.scala:121)\r\n\tat org.apache.spark.api.python.BasePythonRunner.compute(PythonRunner.scala:162)\r\n\tat org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:65)\r\n\tat org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:373)\r\n\tat org.apache.spark.rdd.RDD.iterator(RDD.scala:337)\r\n\tat org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90)\r\n\tat org.apache.spark.scheduler.Task.run(Task.scala:131)\r\n\tat org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:506)\r\n\tat org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1462)\r\n\tat org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:509)\r\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\r\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\r\n\tat java.lang.Thread.run(Thread.java:748)\r\nCaused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified\r\n\tat java.lang.ProcessImpl.create(Native Method)\r\n\tat java.lang.ProcessImpl.<init>(ProcessImpl.java:453)\r\n\tat java.lang.ProcessImpl.start(ProcessImpl.java:140)\r\n\tat java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)\r\n\t... 15 more\r\n\nDriver stacktrace:\r\n\tat org.apache.spark.scheduler.DAGScheduler.failJobAndIndependentStages(DAGScheduler.scala:2403)\r\n\tat org.apache.spark.scheduler.DAGScheduler.$anonfun$abortStage$2(DAGScheduler.scala:2352)\r\n\tat org.apache.spark.scheduler.DAGScheduler.$anonfun$abortStage$2$adapted(DAGScheduler.scala:2351)\r\n\tat scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:62)\r\n\tat scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:55)\r\n\tat scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:49)\r\n\tat org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:2351)\r\n\tat org.apache.spark.scheduler.DAGScheduler.$anonfun$handleTaskSetFailed$1(DAGScheduler.scala:1109)\r\n\tat org.apache.spark.scheduler.DAGScheduler.$anonfun$handleTaskSetFailed$1$adapted(DAGScheduler.scala:1109)\r\n\tat scala.Option.foreach(Option.scala:407)\r\n\tat org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:1109)\r\n\tat org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:2591)\r\n\tat org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2533)\r\n\tat org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2522)\r\n\tat org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:49)\r\n\tat org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:898)\r\n\tat org.apache.spark.SparkContext.runJob(SparkContext.scala:2214)\r\n\tat org.apache.spark.SparkContext.runJob(SparkContext.scala:2235)\r\n\tat org.apache.spark.SparkContext.runJob(SparkContext.scala:2254)\r\n\tat org.apache.spark.SparkContext.runJob(SparkContext.scala:2279)\r\n\tat org.apache.spark.rdd.RDD.$anonfun$collect$1(RDD.scala:1030)\r\n\tat org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151)\r\n\tat org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112)\r\n\tat org.apache.spark.rdd.RDD.withScope(RDD.scala:414)\r\n\tat org.apache.spark.rdd.RDD.collect(RDD.scala:1029)\r\n\tat org.apache.spark.api.python.PythonRDD$.collectAndServe(PythonRDD.scala:180)\r\n\tat org.apache.spark.api.python.PythonRDD.collectAndServe(PythonRDD.scala)\r\n\tat sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\r\n\tat sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\r\n\tat sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\r\n\tat java.lang.reflect.Method.invoke(Method.java:498)\r\n\tat py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)\r\n\tat py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)\r\n\tat py4j.Gateway.invoke(Gateway.java:282)\r\n\tat py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)\r\n\tat py4j.commands.CallCommand.execute(CallCommand.java:79)\r\n\tat py4j.ClientServerConnection.waitForCommands(ClientServerConnection.java:182)\r\n\tat py4j.ClientServerConnection.run(ClientServerConnection.java:106)\r\n\tat java.lang.Thread.run(Thread.java:748)\r\nCaused by: java.io.IOException: Cannot run program \"python3\": CreateProcess error=2, The system cannot find the file specified\r\n\tat java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)\r\n\tat org.apache.spark.api.python.PythonWorkerFactory.createSimpleWorker(PythonWorkerFactory.scala:166)\r\n\tat org.apache.spark.api.python.PythonWorkerFactory.create(PythonWorkerFactory.scala:108)\r\n\tat org.apache.spark.SparkEnv.createPythonWorker(SparkEnv.scala:121)\r\n\tat org.apache.spark.api.python.BasePythonRunner.compute(PythonRunner.scala:162)\r\n\tat org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:65)\r\n\tat org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:373)\r\n\tat org.apache.spark.rdd.RDD.iterator(RDD.scala:337)\r\n\tat org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90)\r\n\tat org.apache.spark.scheduler.Task.run(Task.scala:131)\r\n\tat org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:506)\r\n\tat org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1462)\r\n\tat org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:509)\r\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\r\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\r\n\t... 1 more\r\nCaused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified\r\n\tat java.lang.ProcessImpl.create(Native Method)\r\n\tat java.lang.ProcessImpl.<init>(ProcessImpl.java:453)\r\n\tat java.lang.ProcessImpl.start(ProcessImpl.java:140)\r\n\tat java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)\r\n\t... 15 more\r\n",
     "output_type": "error",
     "traceback": [
      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[1;31mPy4JJavaError\u001b[0m                             Traceback (most recent call last)",
      "\u001b[1;32m<ipython-input-6-377a7789e04b>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[1;32m----> 1\u001b[1;33m \u001b[0mrdd\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mcount\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[1;32m~\\anaconda3\\lib\\site-packages\\pyspark\\rdd.py\u001b[0m in \u001b[0;36mcount\u001b[1;34m(self)\u001b[0m\n\u001b[0;32m   1235\u001b[0m         \u001b[1;36m3\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m   1236\u001b[0m         \"\"\"\n\u001b[1;32m-> 1237\u001b[1;33m         \u001b[1;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mmapPartitions\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;32mlambda\u001b[0m \u001b[0mi\u001b[0m\u001b[1;33m:\u001b[0m \u001b[1;33m[\u001b[0m\u001b[0msum\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;36m1\u001b[0m \u001b[1;32mfor\u001b[0m \u001b[0m_\u001b[0m \u001b[1;32min\u001b[0m \u001b[0mi\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0msum\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m   1238\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m   1239\u001b[0m     \u001b[1;32mdef\u001b[0m \u001b[0mstats\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mself\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
      "\u001b[1;32m~\\anaconda3\\lib\\site-packages\\pyspark\\rdd.py\u001b[0m in \u001b[0;36msum\u001b[1;34m(self)\u001b[0m\n\u001b[0;32m   1224\u001b[0m         \u001b[1;36m6.0\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m   1225\u001b[0m         \"\"\"\n\u001b[1;32m-> 1226\u001b[1;33m         \u001b[1;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mmapPartitions\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;32mlambda\u001b[0m \u001b[0mx\u001b[0m\u001b[1;33m:\u001b[0m \u001b[1;33m[\u001b[0m\u001b[0msum\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mx\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mfold\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;36m0\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0moperator\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0madd\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m   1227\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m   1228\u001b[0m     \u001b[1;32mdef\u001b[0m \u001b[0mcount\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mself\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
      "\u001b[1;32m~\\anaconda3\\lib\\site-packages\\pyspark\\rdd.py\u001b[0m in \u001b[0;36mfold\u001b[1;34m(self, zeroValue, op)\u001b[0m\n\u001b[0;32m   1078\u001b[0m         \u001b[1;31m# zeroValue provided to each partition is unique from the one provided\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m   1079\u001b[0m         \u001b[1;31m# to the final reduce call\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m-> 1080\u001b[1;33m         \u001b[0mvals\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mmapPartitions\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mfunc\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mcollect\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m   1081\u001b[0m         \u001b[1;32mreturn\u001b[0m \u001b[0mreduce\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mop\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mvals\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mzeroValue\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m   1082\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n",
      "\u001b[1;32m~\\anaconda3\\lib\\site-packages\\pyspark\\rdd.py\u001b[0m in \u001b[0;36mcollect\u001b[1;34m(self)\u001b[0m\n\u001b[0;32m    948\u001b[0m         \"\"\"\n\u001b[0;32m    949\u001b[0m         \u001b[1;32mwith\u001b[0m \u001b[0mSCCallSiteSync\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mcontext\u001b[0m\u001b[1;33m)\u001b[0m \u001b[1;32mas\u001b[0m \u001b[0mcss\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m--> 950\u001b[1;33m             \u001b[0msock_info\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mctx\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_jvm\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mPythonRDD\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mcollectAndServe\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_jrdd\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mrdd\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m    951\u001b[0m         \u001b[1;32mreturn\u001b[0m \u001b[0mlist\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0m_load_from_socket\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0msock_info\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0m_jrdd_deserializer\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m    952\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n",
      "\u001b[1;32m~\\anaconda3\\lib\\site-packages\\py4j\\java_gateway.py\u001b[0m in \u001b[0;36m__call__\u001b[1;34m(self, *args)\u001b[0m\n\u001b[0;32m   1307\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m   1308\u001b[0m         \u001b[0manswer\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mself\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mgateway_client\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0msend_command\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mcommand\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m-> 1309\u001b[1;33m         return_value = get_return_value(\n\u001b[0m\u001b[0;32m   1310\u001b[0m             answer, self.gateway_client, self.target_id, self.name)\n\u001b[0;32m   1311\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n",
      "\u001b[1;32m~\\anaconda3\\lib\\site-packages\\pyspark\\sql\\utils.py\u001b[0m in \u001b[0;36mdeco\u001b[1;34m(*a, **kw)\u001b[0m\n\u001b[0;32m    109\u001b[0m     \u001b[1;32mdef\u001b[0m \u001b[0mdeco\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m*\u001b[0m\u001b[0ma\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;33m**\u001b[0m\u001b[0mkw\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m    110\u001b[0m         \u001b[1;32mtry\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m--> 111\u001b[1;33m             \u001b[1;32mreturn\u001b[0m \u001b[0mf\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m*\u001b[0m\u001b[0ma\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;33m**\u001b[0m\u001b[0mkw\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m    112\u001b[0m         \u001b[1;32mexcept\u001b[0m \u001b[0mpy4j\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mprotocol\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mPy4JJavaError\u001b[0m \u001b[1;32mas\u001b[0m \u001b[0me\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m    113\u001b[0m             \u001b[0mconverted\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mconvert_exception\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0me\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mjava_exception\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
      "\u001b[1;32m~\\anaconda3\\lib\\site-packages\\py4j\\protocol.py\u001b[0m in \u001b[0;36mget_return_value\u001b[1;34m(answer, gateway_client, target_id, name)\u001b[0m\n\u001b[0;32m    324\u001b[0m             \u001b[0mvalue\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mOUTPUT_CONVERTER\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mtype\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0manswer\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;36m2\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mgateway_client\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m    325\u001b[0m             \u001b[1;32mif\u001b[0m \u001b[0manswer\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;36m1\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m==\u001b[0m \u001b[0mREFERENCE_TYPE\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m--> 326\u001b[1;33m                 raise Py4JJavaError(\n\u001b[0m\u001b[0;32m    327\u001b[0m                     \u001b[1;34m\"An error occurred while calling {0}{1}{2}.\\n\"\u001b[0m\u001b[1;33m.\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m    328\u001b[0m                     format(target_id, \".\", name), value)\n",
      "\u001b[1;31mPy4JJavaError\u001b[0m: An error occurred while calling z:org.apache.spark.api.python.PythonRDD.collectAndServe.\n: org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 1.0 failed 1 times, most recent failure: Lost task 0.0 in stage 1.0 (TID 8) (MathanA7S executor driver): java.io.IOException: Cannot run program \"python3\": CreateProcess error=2, The system cannot find the file specified\r\n\tat java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)\r\n\tat org.apache.spark.api.python.PythonWorkerFactory.createSimpleWorker(PythonWorkerFactory.scala:166)\r\n\tat org.apache.spark.api.python.PythonWorkerFactory.create(PythonWorkerFactory.scala:108)\r\n\tat org.apache.spark.SparkEnv.createPythonWorker(SparkEnv.scala:121)\r\n\tat org.apache.spark.api.python.BasePythonRunner.compute(PythonRunner.scala:162)\r\n\tat org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:65)\r\n\tat org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:373)\r\n\tat org.apache.spark.rdd.RDD.iterator(RDD.scala:337)\r\n\tat org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90)\r\n\tat org.apache.spark.scheduler.Task.run(Task.scala:131)\r\n\tat org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:506)\r\n\tat org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1462)\r\n\tat org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:509)\r\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\r\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\r\n\tat java.lang.Thread.run(Thread.java:748)\r\nCaused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified\r\n\tat java.lang.ProcessImpl.create(Native Method)\r\n\tat java.lang.ProcessImpl.<init>(ProcessImpl.java:453)\r\n\tat java.lang.ProcessImpl.start(ProcessImpl.java:140)\r\n\tat java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)\r\n\t... 15 more\r\n\nDriver stacktrace:\r\n\tat org.apache.spark.scheduler.DAGScheduler.failJobAndIndependentStages(DAGScheduler.scala:2403)\r\n\tat org.apache.spark.scheduler.DAGScheduler.$anonfun$abortStage$2(DAGScheduler.scala:2352)\r\n\tat org.apache.spark.scheduler.DAGScheduler.$anonfun$abortStage$2$adapted(DAGScheduler.scala:2351)\r\n\tat scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:62)\r\n\tat scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:55)\r\n\tat scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:49)\r\n\tat org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:2351)\r\n\tat org.apache.spark.scheduler.DAGScheduler.$anonfun$handleTaskSetFailed$1(DAGScheduler.scala:1109)\r\n\tat org.apache.spark.scheduler.DAGScheduler.$anonfun$handleTaskSetFailed$1$adapted(DAGScheduler.scala:1109)\r\n\tat scala.Option.foreach(Option.scala:407)\r\n\tat org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:1109)\r\n\tat org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:2591)\r\n\tat org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2533)\r\n\tat org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2522)\r\n\tat org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:49)\r\n\tat org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:898)\r\n\tat org.apache.spark.SparkContext.runJob(SparkContext.scala:2214)\r\n\tat org.apache.spark.SparkContext.runJob(SparkContext.scala:2235)\r\n\tat org.apache.spark.SparkContext.runJob(SparkContext.scala:2254)\r\n\tat org.apache.spark.SparkContext.runJob(SparkContext.scala:2279)\r\n\tat org.apache.spark.rdd.RDD.$anonfun$collect$1(RDD.scala:1030)\r\n\tat org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151)\r\n\tat org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112)\r\n\tat org.apache.spark.rdd.RDD.withScope(RDD.scala:414)\r\n\tat org.apache.spark.rdd.RDD.collect(RDD.scala:1029)\r\n\tat org.apache.spark.api.python.PythonRDD$.collectAndServe(PythonRDD.scala:180)\r\n\tat org.apache.spark.api.python.PythonRDD.collectAndServe(PythonRDD.scala)\r\n\tat sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\r\n\tat sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\r\n\tat sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\r\n\tat java.lang.reflect.Method.invoke(Method.java:498)\r\n\tat py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)\r\n\tat py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)\r\n\tat py4j.Gateway.invoke(Gateway.java:282)\r\n\tat py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)\r\n\tat py4j.commands.CallCommand.execute(CallCommand.java:79)\r\n\tat py4j.ClientServerConnection.waitForCommands(ClientServerConnection.java:182)\r\n\tat py4j.ClientServerConnection.run(ClientServerConnection.java:106)\r\n\tat java.lang.Thread.run(Thread.java:748)\r\nCaused by: java.io.IOException: Cannot run program \"python3\": CreateProcess error=2, The system cannot find the file specified\r\n\tat java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)\r\n\tat org.apache.spark.api.python.PythonWorkerFactory.createSimpleWorker(PythonWorkerFactory.scala:166)\r\n\tat org.apache.spark.api.python.PythonWorkerFactory.create(PythonWorkerFactory.scala:108)\r\n\tat org.apache.spark.SparkEnv.createPythonWorker(SparkEnv.scala:121)\r\n\tat org.apache.spark.api.python.BasePythonRunner.compute(PythonRunner.scala:162)\r\n\tat org.apache.spark.api.python.PythonRDD.compute(PythonRDD.scala:65)\r\n\tat org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:373)\r\n\tat org.apache.spark.rdd.RDD.iterator(RDD.scala:337)\r\n\tat org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90)\r\n\tat org.apache.spark.scheduler.Task.run(Task.scala:131)\r\n\tat org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:506)\r\n\tat org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1462)\r\n\tat org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:509)\r\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\r\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\r\n\t... 1 more\r\nCaused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified\r\n\tat java.lang.ProcessImpl.create(Native Method)\r\n\tat java.lang.ProcessImpl.<init>(ProcessImpl.java:453)\r\n\tat java.lang.ProcessImpl.start(ProcessImpl.java:140)\r\n\tat java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)\r\n\t... 15 more\r\n"
     ]
    }
   ],
   "source": [
    "rdd.count()"
   ]
  }
 ],
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