Commitfbe4cb3

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Fix comment about promising tuples.

Oversight in commitd168b66, which added bottom-up index deletion.

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Lines changed: 4 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -7879,8 +7879,10 @@ bottomup_sort_and_shrink(TM_IndexDeleteOp *delstate)`
`7879`	`7879`	`/*`
`7880`	`7880`	`* We're about ready to sort block groups to determine the optimal order`
`7881`	`7881`	`* for visiting heap blocks. But before we do, round the number of`
`7882`		`- * promising tuples for each block group up to the nearest power-of-two`
`7883`		`- * (except for block groups where npromisingtids is already 0).`
	`7882`	`+ * promising tuples for each block group up to the next power-of-two,`
	`7883`	`+ * unless it is very low (less than 4), in which case we round up to 4.`
	`7884`	`+ * npromisingtids is far too noisy to trust when choosing between a pair`
	`7885`	`+ * of block groups that both have very low values.`
`7884`	`7886`	`*`
`7885`	`7887`	`* This scheme divides heap blocks/block groups into buckets. Each bucket`
`7886`	`7888`	`* contains blocks that have _approximately_ the same number of promising`

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