houqp commented on a change in pull request #1541:
URL: https://github.com/apache/arrow-datafusion/pull/1541#discussion_r783382875
##########
File path: datafusion/src/error.rs
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@@ -101,6 +104,12 @@ impl From<ParserError> for DataFusionError {
}
}
+impl From<Box<dyn Error + Send + Sync>> for DataFusionError {
+ fn from(err: Box<dyn Error + Send + Sync>) -> Self {
+ DataFusionError::External(err)
+ }
+}
+
Review comment:
I was referring to something like this `let mut reader =
obj_reader?.sync_reader().map_err(DatafusionError::from)?;` so the low level
functions that call these object store apis can hide the Error trait objects
from their callers.
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