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Sunday, October 23, 2022

Creating Two Node Spark Cluster With Two Worker Nodes and One Master Node Using Spark's Standalone Resource Manager on Ubuntu machines

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1.1 Setting up Java (base) ashish@ashishdesktop:~$ java Command 'java' not found, but can be install...
Thursday, October 20, 2022

Python Interview Questions (2022 Oct, Week 3)

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Ques 1: Count the range of each value in Python I have dataset of student's scores for each subject. Stu...
Wednesday, October 19, 2022

HDFC may be excluded from Nifty 50 by Dec-end; these stocks front-runners to replace mortgage lender (2022-Oct-19)

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The National Stock Exchange may exclude Housing Development Finance Corporation (HDFC) from the NSE Nifty 50 ...
Monday, October 17, 2022

ARIMA forecast for timeseries is one step ahead. Why? (Solved Interview Problem)

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Question from interviewer I'm trying to forecast timeseries with ARIMA (Autoregressive Integrated Movin...

Check in Python if a key is present in a JSON object (Solved Interview Problem)

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jsonstreng = { "kjoretoydataListe": [ { "kjoretoyId": {...

Hinglish to English Machine Translation Using Transformers

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Download Code and Data import numpy as np from keras_transformer import get_model, decode with open('...
Sunday, October 16, 2022

Stories from 'How Not to be Wrong' by Jordan Ellenberg

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Borrowed from 'How Not to be Wrong: The Hidden Maths of Everyday Life' by Jordan Ellenberg. I...
Saturday, October 15, 2022

JavaScript RegEx Solved Interview Problem (Oct 2022)

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Question Update JSON-like object that contains new lines and comments. I'm working on a Node application wher...

MongoDB and Node.js Installation on Ubuntu (Oct 2022)

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Part 1: MongoDB (base) ashish@ashishlaptop:~/Desktop$ sudo apt-get install -y mongodb-org=6.0.2 mongodb-org-database=6....
Friday, October 14, 2022

Node.js and MongoDB Solved Interview Problem (Oct 2022)

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Question: I'm making 2 queries (or a single query) to the database. What I want to achieve: If one of them is nul...
Thursday, October 13, 2022

SSH Setup (on two Ubuntu machines), Error Messages and Resolution

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System 1: ashishlaptop (base) ashish@ashish-Lenovo-ideapad-130-15IKB:~$ ifconfig enp1s0:...

Setting up a three node Spark cluster on Ubuntu using VirtualBox (Apr 2020)

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Setting hostname in three Guest OS(s): $ sudo gedit /etc/hostname "to master, slave1, and slave2 o...

Spark installation on 3 RHEL based nodes cluster (Issue Resolution in Apr 2020)

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Configurations: Hostname and IP mappings: Check the "/etc/hosts" file by opening it in both NANO and VI. ...