9e2d870 enabled the COPY command to skip soft error, and I think we can add another option which specifies the maximum tolerable number of soft errors.
I remember this was discussed in [1], and feel it would be useful when loading 'dirty' data but there is a limit to how dirty it can be.
Attached a patch for this.
What do you think?
I'm opposed to adding this particular feature.
When implementing this kind of business rule I'd need the option to specify a percentage, not just an absolute value.
I would focus on trying to put the data required to make this kind of determination into a place where applications implementing such business rules and monitoring can readily get at it. The "ERRORS TO" and maybe a corresponding "STATS TO" option where a table can be specified for the system to place the problematic data and stats about the copy itself.
