- name
- orc
- version
- 1.0.0
- description
- Apache ORC columnar storage format reference. File structure with stripes and indexes, schema types with evolution rules, compression codecs (ZLIB/SNAPPY/ZSTD), orc-tools CLI, Python/Java writer APIs, Hive ACID transactions, Spark integration, and performance tuning with bloom filters.
- author
- BytesAgain
- homepage
- https://bytesagain.com
- source
- https://github.com/bytesagain/ai-skills
- tags
- [orc, columnar, hadoop, hive, spark, data, analytics]
- category
- data
Apache ORC
Apache ORC columnar storage format reference.
Commands
| Command | Description |
|---|---|
intro | ORC overview, file structure, vs Parquet |
schema | Types, complex types, schema evolution |
compression | ZLIB/SNAPPY/LZO/ZSTD codecs, ratios |
read | orc-tools CLI, Python/Java read APIs |
write | Writer APIs, stripe/buffer sizing |
hive | Hive integration, ACID transactions |
spark | Spark ORC read/write, pushdown |
performance | Bloom filters, indexes, vectorized reads |