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Fix formula in _hash_spareindex.

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This was correct in earlier versions of the patch that lead to
commit ea69a0dead, but somehow got
broken in the last version which I actually committed.

Mithun Cy, per an off-list report from Ashutosh Sharma

Discussion: http://postgr.es/m/CAD__OujbAwNU71v1y-RoQxZ8LZ6-V2UFTkex3v34MK6uZ3Xb5w@mail.gmail.com
This commit is contained in:
Robert Haas
2017-04-04 07:42:05 -04:00
parent ea69a0dead
commit b38006ef6d
1 changed files with 2 additions and 1 deletions
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3
src/backend/access/hash/hashutil.c
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@@ -174,7 +174,8 @@ _hash_spareindex(uint32 num_bucket)
/* account for phases within current group */
splitpoint_phases +=
(((num_bucket - 1) >> (HASH_SPLITPOINT_PHASE_BITS + 1)) &
(((num_bucket - 1) >>
(splitpoint_group - (HASH_SPLITPOINT_PHASE_BITS + 1))) &
HASH_SPLITPOINT_PHASE_MASK); /* to 0-based value. */
return splitpoint_phases;