diff options
Diffstat (limited to 'src/backend/replication/logical/applyparallelworker.c')
| -rw-r--r-- | src/backend/replication/logical/applyparallelworker.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/src/backend/replication/logical/applyparallelworker.c b/src/backend/replication/logical/applyparallelworker.c index 31a92d1a24a..33b7ec7f029 100644 --- a/src/backend/replication/logical/applyparallelworker.c +++ b/src/backend/replication/logical/applyparallelworker.c @@ -870,10 +870,17 @@ ParallelApplyWorkerMain(Datum main_arg) InitializingApplyWorker = true; - /* Setup signal handling. */ + /* + * Setup signal handling. + * + * Note: We intentionally used SIGUSR2 to trigger a graceful shutdown + * initiated by the leader apply worker. This helps to differentiate it + * from the case where we abort the current transaction and exit on + * receiving SIGTERM. + */ pqsignal(SIGHUP, SignalHandlerForConfigReload); - pqsignal(SIGINT, SignalHandlerForShutdownRequest); pqsignal(SIGTERM, die); + pqsignal(SIGUSR2, SignalHandlerForShutdownRequest); BackgroundWorkerUnblockSignals(); /* @@ -972,9 +979,9 @@ ParallelApplyWorkerMain(Datum main_arg) /* * The parallel apply worker must not get here because the parallel apply - * worker will only stop when it receives a SIGTERM or SIGINT from the - * leader, or when there is an error. None of these cases will allow the - * code to reach here. + * worker will only stop when it receives a SIGTERM or SIGUSR2 from the + * leader, or SIGINT from itself, or when there is an error. None of these + * cases will allow the code to reach here. */ Assert(false); } |