postgres.git / summary / log / commit / refs

commit    1b890562b8d1b44bd3ef948aeeb58dd59abd04b7
Author:   Alvaro Herrera <alvherre@alvh.no-ip.org>
Date:     Fri Nov 03 19:36:32 2017 +0000

    Fix thinkos in BRIN summarization
    
    The previous commit contained a thinko that made a single-range
    summarization request process from there to end of table.  Fix by
    setting the correct end range point.  Per buildfarm.


 src/backend/access/brin/brin.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/backend/access/brin/brin.c b/src/backend/access/brin/brin.c
index 8636620f647..cafc8fe7bea 100644
--- a/src/backend/access/brin/brin.c
+++ b/src/backend/access/brin/brin.c
@@ -1292,8 +1292,11 @@ brinsummarize(Relation index, Relation heapRel, BlockNumber pageRange,
 	if (pageRange == BRIN_ALL_BLOCKRANGES)
 		startBlk = 0;
 	else
+	{
 		startBlk = (pageRange / pagesPerRange) * pagesPerRange;
-	if (startBlk >= heapNumBlocks)
+		heapNumBlocks = Min(heapNumBlocks, startBlk + pagesPerRange);
+	}
+	if (startBlk > heapNumBlocks)
 	{
 		/* Nothing to do if start point is beyond end of table */
 		brinRevmapTerminate(revmap);


[parent: 49df45acd8d4]