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Big Data

Spark, Hadoop, Kafka & the lakehouse

Spark internals and tuning, HDFS/YARN, Hive, Kafka, file formats, streaming and Delta Lake — with vendor flavours (Databricks, EMR, BigQuery, HDInsight).

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Spark · Kafka
Lakehouse / Delta
Vendor flavours
Editorial solutions
Progress tracking

Sample questions

Transformation vs action in Spark
Asked at Spark
Junior
Why is a shuffle expensive?
Asked at Spark
Mid
Kafka consumer-group rebalancing
Asked at Kafka
Mid
How Delta Lake gives ACID on object storage
Asked at Databricks
Senior

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