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Hi There
I don't think this is related to the S3 rate-limiting topic that comes up when you search this error. You would see something like "Slow Down" if that was the case. The key is in the last part of the error
org.apache.parquet.io.GroupColumnIO cannot be cast
This error is probably caused by a parquet schema mismatch. Check your table creation query and test with a smaller subset of the data. There may be some issues with the data format or the table config. see https://docs.aws.amazon.com/athena/latest/ug/troubleshooting-athena.html
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