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!1825 #I5BKFV[bugfix] 修复主备多次进行切换关闭失败的问题

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Merge pull request !1825 from 陈玉标/solve_switchover_problem2
This commit is contained in:
opengauss-bot
2022-06-15 08:33:26 +00:00
committed by Gitee
parent 9f28529194 ff12b9d2c7
commit 43067d6a7b
1 changed files with 11 additions and 7 deletions
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18
src/gausskernel/process/postmaster/pagewriter.cpp
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@ -1214,12 +1214,14 @@ static void HandlePageWriterExit() {
/* Let the pagewriter sub thread exit, then main pagewriter thread exits */
if (t_thrd.pagewriter_cxt.shutdown_requested && g_instance.ckpt_cxt_ctl->page_writer_can_exit) {
g_instance.ckpt_cxt_ctl->page_writer_sub_can_exit = true;
pg_write_barrier();
pg_write_barrier();
/* Wake up the sub thread to exit*/
wakeup_sub_thread();
/*Wait until all the sub pagewriter thread exit then */
while (true) {
ereport(LOG,
(errmodule(MOD_INCRE_CKPT),
errmsg("waiting all the pagewriter sub threads to exit")));
/* Wait until all the sub pagewriter thread exit then */
while (true) {
if (pg_atomic_read_u32(&g_instance.ckpt_cxt_ctl->current_page_writer_count) == 1) {
ereport(LOG,
(errmodule(MOD_INCRE_CKPT),
@ -1233,8 +1235,10 @@ static void HandlePageWriterExit() {
/* Normal exit from the pagewriter is here */
proc_exit(0); /* done */
}
pg_usleep(MILLISECOND_TO_MICROSECOND);
}
pg_usleep(MILLISECOND_TO_MICROSECOND);
}
ereport(LOG, (errmodule(MOD_INCRE_CKPT), errmsg("all the pagewriter threads exit")));
}
}