Apache ORC V0 and V1

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The Apache ORC (Optimized Row Columnar) format is an open-source, column-oriented data storage format which is utilized by prominent data processing frameworks including Apache Spark, Apache Hive, Apache Flink and Apache Hadoop.The format was annouced by Hortonworks (in collaboration with Facebook) in 2013.

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Extensions	`.orc`
Signatures	`4f5243` at byte 0 (Apache ORC)
PRONOM	`fmt/2030`
Wikidata	`Q60767426`

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Sources

PRONOM fmt/2030
Wikidata Q60767426

From PRONOM, Wikidata. Updated 2026-10-20.

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