void replica::on_meta_server_disconnected()
{
ddebug( "%s: meta server disconnected", name());
auto old_status = status();
update_local_configuration_with_no_ballot_change(PS_INACTIVE);
// make sure they can be back directly
if (old_status == PS_PRIMARY || old_status == PS_SECONDARY)
{
set_inactive_state_transient(true);
}
}
void replica::update_configuration_on_meta_server(config_type type, ::dsn::rpc_address node, partition_configuration& newConfig)
{
newConfig.last_committed_decree = last_committed_decree();
if (type != CT_ASSIGN_PRIMARY && type != CT_UPGRADE_TO_PRIMARY)
{
dassert (status() == PS_PRIMARY, "");
dassert (newConfig.ballot == _primary_states.membership.ballot, "");
}
// disable 2pc during reconfiguration
// it is possible to do this only for CT_DOWNGRADE_TO_SECONDARY,
// but we choose to disable 2pc during all reconfiguration types
// for simplicity at the cost of certain write throughput
update_local_configuration_with_no_ballot_change(PS_INACTIVE);
set_inactive_state_transient(true);
dsn_message_t msg = dsn_msg_create_request(RPC_CM_UPDATE_PARTITION_CONFIGURATION, 0, 0);
std::shared_ptr<configuration_update_request> request(new configuration_update_request);
request->config = newConfig;
request->config.ballot++;
request->type = type;
request->node = node;
::marshall(msg, *request);
if (nullptr != _primary_states.reconfiguration_task)
{
_primary_states.reconfiguration_task->cancel(true);
}
rpc_address target(_stub->_failure_detector->get_servers());
_primary_states.reconfiguration_task = rpc::call(
target,
msg,
this,
std::bind(&replica::on_update_configuration_on_meta_server_reply, this,
std::placeholders::_1,
std::placeholders::_2,
std::placeholders::_3,
request),
gpid_to_hash(get_gpid())
);
}
