be4b0c0077
Because sigsetjmp() will restore the initial state with signals blocked, the code path in bgworker.c for reporting an error and exiting would execute that way. Usually this is fairly harmless; but if a parallel worker had an error message exceeding the shared-memory communication buffer size (16K) it would lock up, because it would wait for a resume-sending signal from its parallel leader which it would never detect. To fix, just unblock signals at the appropriate point. This can be shown to fail back to 9.6. The lack of parallel query infrastructure makes it difficult to provide a simple test case for 9.5; but I'm pretty sure the issue exists in some form there as well, so apply the code change there too. Vignesh C, reviewed by Bharath Rupireddy, Robert Haas, and myself Discussion: https://postgr.es/m/CALDaNm1d1hHPZUg3xU4XjtWBOLCrA+-2cJcLpw-cePZ=GgDVfA@mail.gmail.com |
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| .. | ||
| data | ||
| expected | ||
| input | ||
| output | ||
| sql | ||
| .gitignore | ||
| GNUmakefile | ||
| Makefile | ||
| README | ||
| parallel_schedule | ||
| pg_regress.c | ||
| pg_regress.h | ||
| pg_regress_main.c | ||
| regress.c | ||
| regressplans.sh | ||
| resultmap | ||
| serial_schedule | ||
| standby_schedule | ||
README
Documentation concerning how to run these regression tests and interpret the results can be found in the PostgreSQL manual, in the chapter "Regression Tests".