#Olap

1 post in tag “Olap”.

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  Columnar Storage: Parquet Encoding, ORC Stripe Format, Apache Arrow In-Memory Columnar Format, Predicate Pushdown, and SIMD Scans

  2021-07-03

  A deep exploration of columnar data formats — how Parquet and ORC organize data column-by-column for efficient analytics, Apache Arrow's in-memory representation for zero-copy data interchange, and the vectorized execution that makes modern query engines fast.