database/sql: maxBadConnRetries is hard coded but not configurable

[xiezhenye]

In database/sql, maxBadConnRetries is hard coded but not configurable.

Sometimes I do not want it to retry when connect fails, or more retry times is required.

[gopherbot]

CL https://golang.org/cl/22937 mentions this issue.

[gopherbot]

CL https://golang.org/cl/22965 mentions this issue.

[gopherbot]

CL https://golang.org/cl/22968 mentions this issue.

[gopherbot]

CL https://golang.org/cl/31140 mentions this issue.

[rsc]

@xiezhenye, why do you want to configure this? Can you say more about the context in which that makes sense and what behavior you want?

[bradfitz]

Timed out. Closing this.