Re: pg_upgrading to 10.1 corrupts (varchar,varchar) UNIQUE indices

On 12/22/2017 07:43 PM, Peter Geoghegan wrote:
> I have no idea. Maybe something to do with not actually using the same 
> collation provider?
>
> The freebsd package contains modifications to make icu work, or at 
> least did. Possibly, you just stopped using the same collation 
> provider, without even realizing it, because they switched over to a 
> new provider without accounting for pg_upgrade. If so, then that's a 
> bug in the package. This is a total speculation, but makes a certain 
> amount of sense to me.

Exactly!

9.6.6 port options include ICU:
OPTIONS_FILE_UNSET+=DEBUG
OPTIONS_FILE_UNSET+=DTRACE
OPTIONS_FILE_UNSET+=GSSAPI
OPTIONS_FILE_SET+=ICU
OPTIONS_FILE_SET+=INTDATE
OPTIONS_FILE_UNSET+=LDAP
OPTIONS_FILE_UNSET+=NLS
OPTIONS_FILE_UNSET+=OPTIMIZED_CFLAGS
OPTIONS_FILE_UNSET+=PAM
OPTIONS_FILE_UNSET+=SSL
OPTIONS_FILE_SET+=TZDATA
OPTIONS_FILE_SET+=XML
OPTIONS_FILE_UNSET+=MIT_KRB5
OPTIONS_FILE_UNSET+=HEIMDAL_KRB5

10.1 options don't:
OPTIONS_FILE_UNSET+=DEBUG
OPTIONS_FILE_UNSET+=DTRACE
OPTIONS_FILE_UNSET+=GSSAPI
OPTIONS_FILE_SET+=INTDATE
OPTIONS_FILE_UNSET+=LDAP
OPTIONS_FILE_UNSET+=NLS
OPTIONS_FILE_UNSET+=OPTIMIZED_CFLAGS
OPTIONS_FILE_UNSET+=PAM
OPTIONS_FILE_UNSET+=SSL
OPTIONS_FILE_SET+=TZDATA
OPTIONS_FILE_SET+=XML

Thank you and others who have responded so much for your tips!