Dataset refresh failure

Hello All,

Thanks for taking time to look at this issue.

Suddenly, since September 27th, most of my MySQL datasets have been failing to refresh via the service.. this seems to work fine if I download it to the desktop and refresh but not on the service.

I get this error:

Underlying error code: -2147467259

Table: table_name .Underlying error message: MySQL: Fatal error encountered during data read.

I get the same error across datasets on multiple tables. However, this is not a problem if I download the dataset, refresh it and publish it back in the service. Can you please give me pointers on how to go about solving this issue?

Thanks,

Bharath