orc

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.

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Repository: knownasnaffy/prompthound
Last source activity: July 6, 2026 at 07:03
Detected SKILL.md language: English
Stars: 0
Forks: 1

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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

orc

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Permission Setup Review

Apache ORC

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Permission Setup Review

Apache ORC

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