Apache Spark SQL articles

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Loading data from RDBMS

Structured data processing takes more and more place in Apache Spark project. Structured streaming is one of the proofs. But how does Spark SQL work - and particularly, how does it load data from sources of structured data as RDMBS ? Continue Reading →

Schema projection

Even if it's always better to explicit things, in programming we have often the possibility to let the computer to guess. Spark SQL also has this level of intelligence, for example during schema resolving. Continue Reading →


Spark SQL - even if the SQL suffix makes automatically think about RDBMS - works well with other data sources, as even plain CSVs or JSON files. This relation would be difficult to achieve without the concept of schema. Continue Reading →