We've seen this type of CRC collision before; I'll dig up the previous bug (it's on the Maatkit bug tracker I think). I'm not sure if it can be solved because it's an inherent limitation of CRC checksumming, i.e. that just the right combinations of rows produces the same CRC.
We've seen this type of CRC collision before; I'll dig up the previous bug (it's on the Maatkit bug tracker I think). I'm not sure if it can be solved because it's an inherent limitation of CRC checksumming, i.e. that just the right combinations of rows produces the same CRC.