Home/data engineer interview questions/Page 5
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Describe NameNode.
NameNode serves as the HDFS (Hadoop Data File System) main hub. It keeps track of different files across clusters and maintains HDFS data. However, NameNode does not store the actual data — DataNodes store it.
NameNode serves as the HDFS (Hadoop Data File System) main hub. It keeps track of different files across clusters and maintains HDFS data. However, NameNode does not store the actual data — DataNodes store it.
See lessExplain data engineering.
Data engineering is the process of building, testing, and maintaining database structures to analyze data on a large scale. Data engineering helps to turn this unstructured data into usable business insights.
Data engineering is the process of building, testing, and maintaining database structures to analyze data on a large scale. Data engineering helps to turn this unstructured data into usable business insights.
See lessHow does data modeling work?
Data modeling is a technique for making complex software architecture accessible. Conceptual illustrations show the connections between distinct data objects and the rules.
Data modeling is a technique for making complex software architecture accessible. Conceptual illustrations show the connections between distinct data objects and the rules.
See less