> On Fri, Sep 4, 2015 at 10:03 AM, Tatsuo Ishii <is...@postgresql.org> wrote: >> >> I have looked into your patch and am a little bit worried because it >> calls RelationGetNumberOfBlocks() which is an expensive function. >> I think there are two ways to avoid it. >> >> 1) fall back to your former patch. However it may break existing >> behavior what you said. I think there's very little chance it >> actually happens because IndexBuildHeapRangeScan() is only used by >> brin (I confirmed this). But Alvaro said some patches may be it's >> customers. Robert, Amit, Can you please confirm this? >> > > In earlier version of parallel_seqscan patch, heap_setscanlimits() was being > used, but now altogether a different mechanism is used.
Thank you for the confirmation! Best regards, -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese:http://www.sraoss.co.jp -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
