Re: pageinspect: Hash index support
От | Jesper Pedersen |
---|---|
Тема | Re: pageinspect: Hash index support |
Дата | |
Msg-id | 91ef3f46-4180-13e1-eb33-eb3eac10307f@redhat.com обсуждение исходный текст |
Ответ на | Re: pageinspect: Hash index support (Amit Kapila <amit.kapila16@gmail.com>) |
Список | pgsql-hackers |
On 09/23/2016 01:56 AM, Amit Kapila wrote: > While looking at patch, I noticed below code which seems somewhat problematic: > > + stat->max_avail = BLCKSZ - (BLCKSZ - phdr->pd_special + SizeOfPageHeaderData); > + > + /* page type (flags) */ > + if (opaque->hasho_flag & LH_META_PAGE) > + stat->type = 'm'; > + else if (opaque->hasho_flag & LH_OVERFLOW_PAGE) > + stat->type = 'v'; > + else if (opaque->hasho_flag & LH_BUCKET_PAGE) > + stat->type = 'b'; > + else if (opaque->hasho_flag & LH_BITMAP_PAGE) > + stat->type = 'i'; > > In the above code, it appears that you are trying to calculate > max_avail space for all pages in same way. Don't you need to > calculate it differently for bitmap page or meta page as they don't > share the same format as other type of pages? > Correct, however the max_avail calculation was removed in v6, since we don't display average item size anymore. Thanks for the feedback ! Best regards, Jesper
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