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apache / orc

Apache ORC - the smallest, fastest columnar storage for Hadoop workloads
https://orc.apache.org/
Apache License 2.0
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ORC-1389: [C++] Support schema evolution from string group to numeric/string group #1931

Closed ffacs closed 1 month ago

ffacs commented 1 month ago

What changes were proposed in this pull request?

Support conversion from

{string, char, varchar} to {boolean, byte, short, int, long, float, double, string, char, varchar}

Why are the changes needed?

To support schema evolution on c++ side.

How was this patch tested?

UT passed

Was this patch authored or co-authored using generative AI tooling?

NO

wgtmac commented 1 month ago

Feel free to merge this when you are ready.