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check for replication lag before every statement dispatch #531

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check for replication lag before every statement dispatch #531

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18 changes: 9 additions & 9 deletions sources/frontend.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1734,20 +1734,20 @@ static od_frontend_status_t od_frontend_remote(od_client_t *client)
if (status != OD_OK)
break;

/* Check for replication lag and reject query if too big */
od_frontend_status_t catchup_status =
od_frontend_check_replica_catchup(instance,
client);
if (od_frontend_status_is_err(catchup_status)) {
status = catchup_status;
break;
}

server = client->server;

/* attach */
status = od_relay_step(&client->relay);
if (status == OD_ATTACH) {
/* Check for replication lag and reject query if too big */
od_frontend_status_t catchup_status =
od_frontend_check_replica_catchup(instance,
client);
if (od_frontend_status_is_err(catchup_status)) {
status = catchup_status;
break;
}

assert(server == NULL);
status = od_frontend_attach_and_deploy(client, "main");
if (status != OD_OK)
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