docs: [RFC-98] Design doc of DSv2 read support#18276
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geserdugarov wants to merge 3 commits intoapache:masterfrom
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docs: [RFC-98] Design doc of DSv2 read support#18276geserdugarov wants to merge 3 commits intoapache:masterfrom
geserdugarov wants to merge 3 commits intoapache:masterfrom
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danny0405
reviewed
Mar 5, 2026
rfc/rfc-98/rfc-98.md
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| The approach is hybrid: DSv2 for reads, DSv1 fallback for writes (`V2TableWithV1Fallback`). | ||
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| Overall proposed architecture for this hybrid approach is shown in the following schema: |
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any considerations why hybrid mode is here instead of migrating directly into v2?
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Clarified it in "Implementation" chapter in 41997c4
danny0405
reviewed
Mar 5, 2026
| </td> | ||
| <td> | ||
| <pre> | ||
| df.write.format("hudi_v2").mode(...).save(path) |
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this is not user firiendly to users though, and might bring in more compatibility/migration burdens in the long term.
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Agree with you, but I don't see any alternatives. I want to add this to unblock incremental development of these huge changes, and make DSv2 the default and the only way in the end. I've added this in "Future Work" chapter in 41997c4
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@yihua , @vinothchandar , if you don't mind, please, check the approach proposed here. |
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Describe the issue this Pull Request addresses
Corresponding discussion thread: #13955
Proof of concept is available for this design: #18277
Summary and Changelog
Full design doc for claimed "Spark Datasource V2 Read" support request: #13609
Impact
None. It will be done later. Design doc discussion only at this stage.
Risk Level
None. Change design doc only.
Documentation Update
None. It will be done later. Design doc discussion only at this stage.
Contributor's checklist