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Minor: Rephrase MSRV policy to be more explanatory #13668

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Dec 6, 2024
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Minor: Rephrase MSRV policy to be more explanatory #13668

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Minor: Rephrase MSRV policy to be more explanatory
comphead Dec 5, 2024
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Update README.md
comphead Dec 5, 2024
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MSRV policy update
comphead Dec 5, 2024
eac1e9f
MSRV policy update
comphead Dec 5, 2024
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Update README.md
comphead Dec 6, 2024
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MSRV policy update
comphead Dec 6, 2024
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11 changes: 7 additions & 4 deletions README.md
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Expand Up @@ -126,14 +126,17 @@ Optional features:

## Rust Version Compatibility Policy

DataFusion's Minimum Required Stable Rust Version (MSRV) policy is to support stable [4 latest
Rust versions](https://releases.rs) OR the stable minor Rust version as of 4 months, whichever is lower.
The Rust toolchain releases are tracked at [Rust Versions](https://releases.rs) and follow
[semantic versioning](https://semver.org/). A Rust toolchain release can be identified
by a version string like `1.80.0`, or more generally `major.minor.patch`.

DataFusion's supports the last 4 stable Rust minor versions released and any such versions released within the last 4 months.

For example, given the releases `1.78.0`, `1.79.0`, `1.80.0`, `1.80.1` and `1.81.0` DataFusion will support 1.78.0, which is 3 minor versions prior to the most minor recent `1.81`.

If a hotfix is released for the minimum supported Rust version (MSRV), the MSRV will be the minor version with all hotfixes, even if it surpasses the four-month window.
Note: If a Rust hotfix is released for the current MSRV, the MSRV will be updated to the specific minor version that includes all applicable hotfixes preceding other policies.

We enforce this policy using a [MSRV CI Check](https://github.com/search?q=repo%3Aapache%2Fdatafusion+rust-version+language%3ATOML+path%3A%2F%5ECargo.toml%2F&type=code)
DataFusion enforces MSRV policy using a [MSRV CI Check](https://github.com/search?q=repo%3Aapache%2Fdatafusion+rust-version+language%3ATOML+path%3A%2F%5ECargo.toml%2F&type=code)

## DataFusion API evolution policy

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