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JanKaul avatar JanKaul commented on June 24, 2024

Hi, it's definitely planned to support writing to iceberg. I just didn't get around to implementing it.
And I haven't figured out a perfect way to do so. I think Datafusion currently doesn't have the functionality for INSERT INTO operations. So the current solution probably requires some external writer.
We can have a look at how delta_rs is doing it.

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jacksonrnewhouse avatar jacksonrnewhouse commented on June 24, 2024

I'm currently only using the parsing and planning components of DataFusion and performing the execution separately. Since 17.0 the DataFusion grammar now supports WriteOps, via this PR: apache/datafusion#4902

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JanKaul avatar JanKaul commented on June 24, 2024

Okay great, I will have a look. If you have an idea how this could be implemented it would be great if you could share it here. I will also report my findings.

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doki23 avatar doki23 commented on June 24, 2024

Do we have rust api for writing?

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JanKaul avatar JanKaul commented on June 24, 2024

No, not yet. But I will look into it in the coming days.

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JanKaul avatar JanKaul commented on June 24, 2024

It's been a while but the crate now supports writing to iceberg tables with datafusion.

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