Re: Tid scan improvements
От | Alvaro Herrera |
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Тема | Re: Tid scan improvements |
Дата | |
Msg-id | 20181106035249.rtukjc24gm56sjc7@alvherre.pgsql обсуждение исходный текст |
Ответ на | Re: Tid scan improvements (David Rowley <david.rowley@2ndquadrant.com>) |
Ответы |
Re: Tid scan improvements
|
Список | pgsql-hackers |
On 2018-Nov-06, David Rowley wrote: > 14. we pass 'false' to what? > > + * save the tuple and the buffer returned to us by the access methods in > + * our scan tuple slot and return the slot. Note: we pass 'false' because > + * tuples returned by heap_getnext() are pointers onto disk pages and were > + * not created with palloc() and so should not be pfree()'d. Note also > + * that ExecStoreHeapTuple will increment the refcount of the buffer; the > + * refcount will not be dropped until the tuple table slot is cleared. > */ Seems a mistake stemming from 29c94e03c7d0 ... -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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