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Report progress of ANALYZE commands

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This uses the progress reporting infrastructure added by c16dc1aca5,
adding support for ANALYZE.

Co-authored-by: Álvaro Herrera <alvherre@alvh.no-ip.org>
Co-authored-by: Tatsuro Yamada <tatsuro.yamada.tf@nttcom.co.jp>
Reviewed-by: Julien Rouhaud, Robert Haas, Anthony Nowocien, Kyotaro Horiguchi,
	Vignesh C, Amit Langote
This commit is contained in:
Alvaro Herrera
2020-01-15 11:02:09 -03:00
parent 16a4a3d59c
commit a166d408eb
11 changed files with 311 additions and 8 deletions
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6
src/backend/utils/misc/sampling.c
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@@ -32,8 +32,10 @@
* Since we know the total number of blocks in advance, we can use the
* straightforward Algorithm S from Knuth 3.4.2, rather than Vitter's
* algorithm.
*
* Returns the number of blocks that BlockSampler_Next will return.
*/
void
BlockNumber
BlockSampler_Init(BlockSampler bs, BlockNumber nblocks, int samplesize,
long randseed)
{
@@ -48,6 +50,8 @@ BlockSampler_Init(BlockSampler bs, BlockNumber nblocks, int samplesize,
bs->m = 0; /* blocks selected so far */
sampler_random_init_state(randseed, bs->randstate);
return Min(bs->n, bs->N);
}
bool