feat: add homework

homework/task5.ipynb

@@ -0,0 +1,121 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "53b1885e-2dff-41ec-9a50-3f1bba298349",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from pyspark.sql import SparkSession, functions as F\n",
+    "\n",
+    "spark = SparkSession.builder.appName(\"some_name\").getOrCreate()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "id": "61b1708d-9227-4200-afce-be808286e6b4",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "+------------------------------------------------+\n",
+      "|message                                         |\n",
+      "+------------------------------------------------+\n",
+      "|Database connection failed                      |\n",
+      "|Timeout while waiting for response response user|\n",
+      "|NullPointerException                            |\n",
+      "+------------------------------------------------+\n",
+      "\n"
+     ]
+    }
+   ],
+   "source": [
+    "df = spark.read.text(\"logs.txt\")\n",
+    "\n",
+    "errors_df = df.filter(F.col(\"value\").startswith(\"ERROR \"))\n",
+    "\n",
+    "parts = F.split(F.col(\"value\"), \" \", 4)\n",
+    "messages_df = errors_df.select(parts[3].alias(\"message\"))\n",
+    "\n",
+    "messages_df.show(truncate=False)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "id": "0ee49042-a0d8-4f2a-b9bf-9818dad3c61f",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "+------------------------------------------------+\n",
+      "|message                                         |\n",
+      "+------------------------------------------------+\n",
+      "|database connection failed                      |\n",
+      "|timeout while waiting for response response user|\n",
+      "|nullpointerexception                            |\n",
+      "+------------------------------------------------+\n",
+      "\n"
+     ]
+    }
+   ],
+   "source": [
+    "lower_messages_df = messages_df.select(F.lower(F.col(\"message\")).alias(\"message\"))\n",
+    "lower_messages_df.show(truncate=False)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 14,
+   "id": "ed957bf8-6ba2-452c-85d7-28162452ed2b",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "+------------------------------------------------+---------------+\n",
+      "|message                                         |user_in_message|\n",
+      "+------------------------------------------------+---------------+\n",
+      "|database connection failed                      |false          |\n",
+      "|timeout while waiting for response response user|true           |\n",
+      "|nullpointerexception                            |false          |\n",
+      "+------------------------------------------------+---------------+\n",
+      "\n"
+     ]
+    }
+   ],
+   "source": [
+    "lower_messages_df = lower_messages_df.withColumn(\"user_in_message\", F.col(\"message\").contains(\"user\"))\n",
+    "lower_messages_df.show(truncate=False)"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.12.3"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}