On Mon, 23 Dec 2019 at 16:24, Mahendra Singh <mahi6...@gmail.com> wrote: > > On Fri, 20 Dec 2019 at 17:17, Prabhat Sahu > <prabhat.s...@enterprisedb.com> wrote: > > > > Hi, > > > > While testing this feature with parallel vacuum on "TEMPORARY TABLE", I got > > a server crash on PG Head+V36_patch. > > Changed configuration parameters and Stack trace are as below: > > > > autovacuum = on > > max_worker_processes = 4 > > shared_buffers = 10MB > > max_parallel_workers = 8 > > max_parallel_maintenance_workers = 8 > > vacuum_cost_limit = 2000 > > vacuum_cost_delay = 10 > > min_parallel_table_scan_size = 8MB > > min_parallel_index_scan_size = 0 > > > > -- Stack trace: > > [centos@parallel-vacuum-testing bin]$ gdb -q -c data/core.1399 postgres > > Reading symbols from > > /home/centos/BLP_Vacuum/postgresql/inst/bin/postgres...done. > > [New LWP 1399] > > [Thread debugging using libthread_db enabled] > > Using host libthread_db library "/lib64/libthread_db.so.1". > > Core was generated by `postgres: autovacuum worker postgres > > '. > > Program terminated with signal 6, Aborted. > > #0 0x00007f4517d80337 in raise () from /lib64/libc.so.6 > > Missing separate debuginfos, use: debuginfo-install > > glibc-2.17-292.el7.x86_64 keyutils-libs-1.5.8-3.el7.x86_64 > > krb5-libs-1.15.1-37.el7_7.2.x86_64 libcom_err-1.42.9-16.el7.x86_64 > > libgcc-4.8.5-39.el7.x86_64 libselinux-2.5-14.1.el7.x86_64 > > openssl-libs-1.0.2k-19.el7.x86_64 pcre-8.32-17.el7.x86_64 > > zlib-1.2.7-18.el7.x86_64 > > (gdb) bt > > #0 0x00007f4517d80337 in raise () from /lib64/libc.so.6 > > #1 0x00007f4517d81a28 in abort () from /lib64/libc.so.6 > > #2 0x0000000000a96341 in ExceptionalCondition (conditionName=0xd18efb > > "strvalue != NULL", errorType=0xd18eeb "FailedAssertion", > > fileName=0xd18ee0 "snprintf.c", lineNumber=442) at assert.c:67 > > #3 0x0000000000b02522 in dopr (target=0x7ffdb0e38450, format=0xc5fa95 > > ".%s\"", args=0x7ffdb0e38538) at snprintf.c:442 > > #4 0x0000000000b01ea6 in pg_vsnprintf (str=0x256df50 "autovacuum: dropping > > orphan temp table \"postgres.", '\177' <repeats 151 times>..., count=1024, > > fmt=0xc5fa68 "autovacuum: dropping orphan temp table \"%s.%s.%s\"", > > args=0x7ffdb0e38538) at snprintf.c:195 > > #5 0x0000000000afbadf in pvsnprintf (buf=0x256df50 "autovacuum: dropping > > orphan temp table \"postgres.", '\177' <repeats 151 times>..., len=1024, > > fmt=0xc5fa68 "autovacuum: dropping orphan temp table \"%s.%s.%s\"", > > args=0x7ffdb0e38538) at psprintf.c:110 > > #6 0x0000000000afd34b in appendStringInfoVA (str=0x7ffdb0e38550, > > fmt=0xc5fa68 "autovacuum: dropping orphan temp table \"%s.%s.%s\"", > > args=0x7ffdb0e38538) > > at stringinfo.c:149 > > #7 0x0000000000a970fd in errmsg (fmt=0xc5fa68 "autovacuum: dropping orphan > > temp table \"%s.%s.%s\"") at elog.c:832 > > #8 0x00000000008588d2 in do_autovacuum () at autovacuum.c:2249 > > #9 0x0000000000857b29 in AutoVacWorkerMain (argc=0, argv=0x0) at > > autovacuum.c:1689 > > #10 0x000000000085772f in StartAutoVacWorker () at autovacuum.c:1483 > > #11 0x000000000086e64f in StartAutovacuumWorker () at postmaster.c:5562 > > #12 0x000000000086e106 in sigusr1_handler (postgres_signal_arg=10) at > > postmaster.c:5279 > > #13 <signal handler called> > > #14 0x00007f4517e3f933 in __select_nocancel () from /lib64/libc.so.6 > > #15 0x0000000000869838 in ServerLoop () at postmaster.c:1691 > > #16 0x0000000000869212 in PostmasterMain (argc=3, argv=0x256bd70) at > > postmaster.c:1400 > > #17 0x000000000077855d in main (argc=3, argv=0x256bd70) at main.c:210 > > (gdb) > > > > I have tried to reproduce the same with all previously executed queries but > > now I am not able to reproduce the same. > > Thanks Prabhat for reporting this issue. > > I am able to reproduce this issue at my end. I tested and verified > that this issue is not related to parallel vacuum patch. I am able to > reproduce this issue on HEAD without parallel vacuum patch(v37). > > I will report this issue in new thread with reproducible test case.
Thank you so much! Regards, -- Masahiko Sawada http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
