What is Spark repartition, Partitionby, and Coalesce
Data Engineer Interview Questions
Data Engineer Interview Questions
I Data engineer sono professionisti informatici richiesti pressoché in tutti i settori. Si occupano di monitorare i trend dei dati per pianificare le azioni più adeguate che un'azienda deve intraprendere. Uno degli aspetti più critici del lavoro di un Data engineer è l'elaborazione dei dati grezzi e la loro trasformazione in dati utilizzabili per creare pipeline e sistemi di dati.
Domande tipiche dei colloqui per Data engineer e come rispondere
Domanda 1: Puoi descrivere in dettaglio il tuo livello di competenza nell'ambito dei linguaggi di programmazione?
Domanda 2: Spiega a parole tue che cos’è il data engineering.
Domanda 3: Puoi descrivere un'esperienza lavorativa con Apache Hadoop e in ambienti di gestione dei dati nel cloud?
20,236 data engineer interview questions shared by candidates
I did not make it through the assessment. I was stuck in solving the test cases. Use your time wisely and divide time for each problem. The question was on finding the shortest distance in a site. Leetcode question
SQL. We have a table below : Team ------ India England Srilanka Can you write a SQL code, by which we can generate all possible combinations between the above input teams? We have the below dataset : Employee_salary Sanpshotdate | Employee | Doj | Current Salary -------------------------------------------------------- 01-Jan-2022 | 1 | 01-Jan-2021 | 1000 01-Jan-2023 | 1 | 01-Jan-2021 | 2000 01-Jan-2024 | 1 | 01-Jan-2021 | 2300 01-Jan-2025 | 1 | 01-Jan-2021 | 3000 a) Print for each employee what was current and immediate previous salary b) Identify the employees based on the highest increase of salary from the first salary, who have joined more than 2 years ago c) Identify the employees where salary increase between the last two years are more compared to the average salary increase in the last two years
describe your most recent projects.
Q: WAP to swap to Variable using 2 variable
Tell me about yourself and Describe the code.
what is pivot in sql, how do you use it
Questions about different tools/platforms
what was your highest education level?
Why are you interested in this position?
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