Refactor demo notebook structure by converting a code cell to markdow…

…n for improved documentation. Removed redundant markdown cell and updated execution metadata for clarity. This enhances the user experience by providing better context and organization within the notebook.

examples/user_0@gmail.com/demo.ipynb

@@ -1,8 +1,19 @@
 {
  "cells": [
   {
-   "cell_type": "code",
+   "cell_type": "markdown",
    "isExecuted": true,
+   "metadata": {},
+   "source": [
+    "# Demo Notebook\n",
+    "\n",
+    "- This is just a demo notebook\n",
+    "- For testing only"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "isExecuted": false,
    "lastExecutionResult": "success",
    "lastExecutionTime": "2024-12-10 03:27:50",
    "metadata": {},
@@ -64,102 +75,6 @@
     "\n",
     "spark\n"
    ]
-  },
-  {
-   "cell_type": "markdown",
-   "isExecuted": true,
-   "metadata": {},
-   "source": [
-    "# Demo Notebook\n",
-    "\n",
-    "- This is just a demo notebook\n",
-    "- For testing only"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "isExecuted": false,
-   "lastExecutionResult": "success",
-   "lastExecutionTime": "2024-08-04 15:29:17",
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/html": [
-       "\n",
-       "        <div style=\"border: 1px solid #e8e8e8; padding: 10px;\">\n",
-       "            <h3>Spark Session Information</h3>\n",
-       "            <p><strong>Application ID:</strong> app-20240804152430-0000</p>\n",
-       "            <p><strong>Spark UI:</strong> <a href=\"http://localhost:18080/history/app-20240804152430-0000\">http://localhost:18080/history/app-20240804152430-0000</a></p>\n",
-       "        </div>\n",
-       "        "
-      ],
-      "text/plain": [
-       "Custom Spark Session (App ID: app-20240804152430-0000) - UI: http://66eef2d0ade3:4040"
-      ]
-     },
-     "execution_count": 4,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "# SparkSession is already defined in `spark` variable\n",
-    "spark"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "isExecuted": false,
-   "metadata": {},
-   "outputs": [
-    {
-     "ename": "NameError",
-     "evalue": "name 'a' is not defined",
-     "output_type": "error",
-     "traceback": [
-      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
-      "\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
-      "Cell \u001b[0;32mIn[1], line 1\u001b[0m\n\u001b[0;32m----> 1\u001b[0m \u001b[38;5;28mprint\u001b[39m(\u001b[43ma\u001b[49m \u001b[38;5;241m+\u001b[39m \u001b[38;5;124m\"\u001b[39m\u001b[38;5;124m2233666777888\u001b[39m\u001b[38;5;124m\"\u001b[39m)\n",
-      "\u001b[0;31mNameError\u001b[0m: name 'a' is not defined"
-     ]
-    }
-   ],
-   "source": [
-    "print(a + \"2233666777888\")"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "isExecuted": false,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "66\n",
-      "77\n"
-     ]
-    }
-   ],
-   "source": [
-    "print(66)\n",
-    "print(77)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "isExecuted": false,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "spark.stop()"
-   ]
   }
  ],
  "metadata": {

webapp/src/models/SparkModel.js

@@ -62,25 +62,9 @@ class SparkModel {
 
         // Create a cell with Spark initialization code that uses the config
         const sparkInitCode = `
-from pyspark.sql import SparkSession
-
-spark = SparkSession.builder\\
-    .appName("${sparkAppId}")\\
-    .master("spark://spark-master:7077")\\
-    .config("spark.jars.packages", "io.delta:delta-spark_2.12:3.0.0")\\
-    .config("spark.sql.extensions", "io.delta.sql.DeltaSparkSessionExtension")\\
-    .config("spark.sql.catalog.spark_catalog", "org.apache.spark.sql.delta.catalog.DeltaCatalog")\\
-    .config("spark.eventLog.enabled", "true")\\
-    .config("spark.eventLog.dir", "/opt/data/spark-events")\\
-    .config("spark.history.fs.logDirectory", "/opt/data/spark-events")\\
-    .config("spark.sql.warehouse.dir", "/opt/data/spark-warehouse")\\
-    .config("spark.executor.memory", "${sparkConfig['spark.executor.memory']}")\\
-    .config("spark.executor.cores", ${sparkConfig['spark.executor.cores']})\\
-    .config("spark.executor.instances", ${sparkConfig['spark.executor.instances']})\\
-    .config("spark.driver.memory", "${sparkConfig['spark.driver.memory']}")\\
-    .config("spark.driver.cores", ${sparkConfig['spark.driver.cores']})\\
-    .getOrCreate()
+from startup import create_spark_dev
 
+spark = create_spark_dev()
 spark
 `;