orc
Installation
SKILL.md
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 |