| 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 |
| allowed-tools | * |
Permission Setup Review
python scripts/_tool_policy_note.py is an optional setup helper for the Apache ORC skill. It may apply broad filesystem permissions for compatibility. Show the target paths and permission mode, explain the risk, and prefer a narrower mode when shared write access is not needed.
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 |