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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/07/07 05:57:19 UTC
[GitHub] [arrow-datafusion] JYInMyHeart opened a new issue, #2847: [Question]How to call an async function in `ExecutionPlan::exec` method?
JYInMyHeart opened a new issue, #2847:
URL: https://github.com/apache/arrow-datafusion/issues/2847
I had customized some execution plan struct. In datafusion 7.1.0 the `ExecutionPlan::exec` method is async so I can directly call some async functions in it when I Implement some methods for `ExecutionPlan`. After upgrade datafusion to 9.0.0 the `ExecutionPlan::exec` becomes sync. So how can I call an async function in `ExecutionPlan::exec` method?
I have seen that `SortExec` in datafusion-core use `futures::stream::once` to wrap async calls. But `futures::stream::once` is not public for me. So how can I make it?
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[GitHub] [arrow-datafusion] JYInMyHeart closed issue #2847: [Question]How to call an async function in `ExecutionPlan::exec` method?
Posted by GitBox <gi...@apache.org>.
JYInMyHeart closed issue #2847: [Question]How to call an async function in `ExecutionPlan::exec` method?
URL: https://github.com/apache/arrow-datafusion/issues/2847
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[GitHub] [arrow-datafusion] tustvold commented on issue #2847: [Question]How to call an async function in `ExecutionPlan::exec` method?
Posted by GitBox <gi...@apache.org>.
tustvold commented on issue #2847:
URL: https://github.com/apache/arrow-datafusion/issues/2847#issuecomment-1177581973
`futures::stream::once` is part of the [`futures`](https://docs.rs/futures/latest/futures/) crate, and so if you add this to your Cargo.toml you should be able to make use of it
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[GitHub] [arrow-datafusion] JYInMyHeart commented on issue #2847: [Question]How to call an async function in `ExecutionPlan::exec` method?
Posted by GitBox <gi...@apache.org>.
JYInMyHeart commented on issue #2847:
URL: https://github.com/apache/arrow-datafusion/issues/2847#issuecomment-1178771289
@tustvold I fixed it. Thanks for your reply.
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[GitHub] [arrow-datafusion] JYInMyHeart commented on issue #2847: [Question]How to call an async function in `ExecutionPlan::exec` method?
Posted by GitBox <gi...@apache.org>.
JYInMyHeart commented on issue #2847:
URL: https://github.com/apache/arrow-datafusion/issues/2847#issuecomment-1178594152
> `futures::stream::once` is part of the [`futures`](https://docs.rs/futures/latest/futures/) crate, and so if you add this to your Cargo.toml you should be able to make use of it
But I still don't know how to write the correct code even I add `futures` crate.
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