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postgresql/src/backend
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Tom Lane 1dfc9193af Avoid misbehavior when hash_table_bytes < bucket_size. 
It's possible to reach this case when work_mem is very small and tupsize
is (relatively) very large.  In that case ExecChooseHashTableSize would
get an assertion failure, or with asserts off it'd compute nbuckets = 0,
which'd likely cause misbehavior later (I've not checked).  To fix,
clamp the number of buckets to be at least 1.

This is due to faulty conversion of old my_log2() coding in 28d936031.
Back-patch to v13, as that was.

Zhang Mingli

Discussion: https://postgr.es/m/beb64ca0-91e2-44ac-bf4a-7ea36275ec02@Spark
2022-08-13 16:59:58 -04:00
..
access BRIN: mask BRIN_EVACUATE_PAGE for WAL consistency checking 2022-08-05 18:00:17 +02:00
bootstrap Rethink definition of pg_attribute.attcompression. 2021-05-27 13:24:27 -04:00
catalog In extensions, don't replace objects not belonging to the extension. 2022-08-08 11:12:31 -04:00
commands In extensions, don't replace objects not belonging to the extension. 2022-08-08 11:12:31 -04:00
executor Avoid misbehavior when hash_table_bytes < bucket_size. 2022-08-13 16:59:58 -04:00
foreign Update copyright for 2021 2021-01-02 13:06:25 -05:00
jit Back-patch LLVM 14 API changes. 2022-03-16 11:42:00 +13:00
lib Fix lock assertions in dshash.c. 2022-07-11 15:47:12 +12:00
libpq Remove misguided SSL key file ownership check in libpq. 2022-05-26 14:14:05 -04:00
main Update copyright for 2021 2021-01-02 13:06:25 -05:00
nodes Add missing fields to _outConstraint() 2022-08-13 10:37:45 +02:00
optimizer Fix incorrect tests for SRFs in relation_can_be_sorted_early(). 2022-08-03 17:33:42 -04:00
parser Catch stack overflow when recursing in transformFromClauseItem(). 2022-08-13 15:21:28 -04:00
partitioning Avoid using ambiguous word "non-negative" in error messages. 2021-07-28 01:21:35 +09:00
po Translation updates 2022-08-08 12:39:52 +02:00
port Reject huge_pages=on if shared_memory_type=sysv. 2021-10-26 13:09:00 +13:00
postmaster Wake up for latches in CheckpointWriteDelay(). 2022-03-16 13:57:07 +13:00
regex Make pg_regexec() robust against out-of-range search_start. 2021-09-11 15:19:43 -04:00
replication Fix catalog lookup with the wrong snapshot during logical decoding. 2022-08-11 09:45:04 +05:30
rewrite Fix incautious CTE matching in rewriteSearchAndCycle(). 2022-04-23 12:16:12 -04:00
snowball Update snowball 2021-02-19 08:10:15 +01:00
statistics Partially undo commit 94da73281. 2022-08-05 15:57:46 -04:00
storage Add HINT for restartpoint race with KeepFileRestoredFromArchive(). 2022-08-05 08:30:58 -07:00
tcop Force immediate commit after CREATE DATABASE etc in extended protocol. 2022-07-26 13:07:03 -04:00
tsearch Invent qsort_interruptible(). 2022-07-12 16:30:36 -04:00
utils Fix trim_array() for zero-dimensional array argument. 2022-07-31 13:43:17 -04:00
.gitignore
common.mk Remove PARTIAL_LINKING build mode. 2018-03-30 17:33:04 -07:00
Makefile Use sort_template.h for qsort_tuple() and qsort_ssup(). 2021-03-03 17:02:32 +13:00
nls.mk Translation updates 2021-09-20 16:23:13 +02:00