The following bug has been logged on the website:
Bug reference: 18616
Logged by: Alexander Lakhin
Email address: exclusion@gmail.com
PostgreSQL version: 17rc1
Operating system: Ubuntu 22.04
Description:
The following script:
CREATE TABLE t(i int);
INSERT INTO t SELECT 1 FROM generate_series(1, 10000000);
SET maintenance_work_mem = '1GB';
SET statement_timeout = '90s';
CREATE INDEX hi ON t USING hash (i);
reaches a state, when the backend can not be interrupted.
gdb shows that the code execution loops inside:
#0 _h_indexbuild (...) at hashsort.c:151
#1 0x0000557f3671cbf3 in hashbuild (...)
at hash.c:183
...
with tups_done increasing slowly (given the total number of tuples).
Reproduced on all supported versions.
