Re: Fix for consume_xids advancing XIDs incorrectly - Mailing list pgsql-hackers

>> 
>> 
>>         consumed = XidSkip(nextXid);
>>         if (consumed > 0)
>>                 TransamVariables->nextXid.value += (uint64) consumed;
>> 
>> BTW, the code snippet above in consume_xids_shortcut() could 
>> potentially set
>> the next XID to a value below FirstNormalTransactionId? If yes, we 
>> should account for
>> FirstNormalFullTransactionId when increasing the next XID, similar to
>> how FullTransactionIdAdvance() handles it.
> 
> Good catch. I agree with you. We need to do something similar to what
> FullTransactionIdAdvance() does so that it does not appear as a
> special 32-bit XID.
> 
> Regards,

I think this is not the case since XidSkip returns min(UINT32_MAX - 5 - 
low, *), which prevents the wrap-around of nextXid.

Regards,
Yushi Ogiwara