Definition
An item in the `Hudi` ingestion processing timelineA log of def~instant-actions that are performed on a def~table, ordered by def~instant-time.
Design details
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At its core, Hudi maintains a
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Design decisions
in which it was written. The timeline is akin to a redo/transaction log, found in databases, and consists of a set of def~timeline-instants. Hudi guarantees that the actions performed on the timeline are atomic & timeline consistent based on the instant time. Timeline is implemented as a set of files under the `. |
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hoodie` def~metadata-folder directly under the def~table-basepath. Specifically, while the most recent instants are maintained as individual files, the older instants are archived to the def~timeline-archival folder, to bound the number of files, listed by writers and queries. |
Design decisions
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