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Hi,
Please be informed that this is a know limitation with Glue dynamic frame as of now when dealing with S3 object name starting with "_" underscore. Hence as a workaround you can rename the object that is starting with underscore. Further, Glue does not use Athena under the hood and you can't configure anything regarding this in glue as it is a limitation. Thank you !
answered 3 years ago
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It's really by design, there is a convention coming from Hadoop that files starting from "_" or "." are considered internal (e.g. metadata) and not contain data