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I applied via Walk-in and was interviewed before Feb 2020. There was 1 interview round.
Spark has a master-slave architecture with a cluster manager and worker nodes.
Spark has a driver program that communicates with a cluster manager to allocate resources and schedule tasks.
The cluster manager can be standalone, Mesos, or YARN.
Worker nodes execute tasks and store data in memory or on disk.
Spark can also utilize external data sources like Hadoop Distributed File System (HDFS) or Amazon S3.
Spark supports va...
I appeared for an interview in May 2021.
Window functions in SQL are used to perform calculations across a set of table rows related to the current row.
Window functions are used to calculate values based on a specific subset of rows within a table.
They allow for ranking, aggregation, and other calculations without grouping the rows.
Examples of window functions include ROW_NUMBER(), RANK(), and SUM() OVER().
Delta Lake is an open-source storage layer that brings ACID transactions to Apache Spark and big data workloads.
Delta Lake is built on top of Apache Spark and provides ACID transactions for big data processing.
It allows for schema enforcement and evolution, data versioning, and time travel queries.
Delta Lake is compatible with popular data science and machine learning libraries like TensorFlow and PyTorch.
I applied via Company Website and was interviewed in Jul 2024. There was 1 interview round.
Pods are the smallest deployable units in Kubernetes, consisting of one or more containers.
Pods are used to run and manage containers in Kubernetes
Each pod has its own unique IP address within the Kubernetes cluster
Pods can contain multiple containers that share resources and are scheduled together
Pods are ephemeral and can be easily created, destroyed, or replicated
Pods can be managed and scaled using Kubernetes contr
My strengths include strong analytical skills, attention to detail, and problem-solving abilities.
Strong analytical skills - able to analyze complex data sets and derive meaningful insights
Attention to detail - meticulous in ensuring data accuracy and quality
Problem-solving abilities - adept at identifying and resolving data-related issues
Experience with data manipulation tools like SQL, Python, and Spark
Seeking new challenges and growth opportunities in a different environment.
Looking for new challenges to enhance my skills and knowledge
Seeking growth opportunities that align with my career goals
Interested in exploring different technologies and industries
Want to work in a more collaborative team environment
Seeking better work-life balance or location proximity
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