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-rw-r--r--lib/mnesia/src/mnesia_loader.erl244
1 files changed, 95 insertions, 149 deletions
diff --git a/lib/mnesia/src/mnesia_loader.erl b/lib/mnesia/src/mnesia_loader.erl
index e785b795d1..eb83168498 100644
--- a/lib/mnesia/src/mnesia_loader.erl
+++ b/lib/mnesia/src/mnesia_loader.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1998-2010. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2011. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -27,7 +27,6 @@
net_load_table/4,
send_table/3]).
--export([old_node_init_table/6]). %% Spawned old node protocol conversion hack
-export([spawned_receiver/8]). %% Spawned lock taking process
-import(mnesia_lib, [set/2, fatal/2, verbose/2, dbg_out/2]).
@@ -36,7 +35,7 @@
val(Var) ->
case ?catch_val(Var) of
- {'EXIT', Reason} -> mnesia_lib:other_val(Var, Reason);
+ {'EXIT', Reason} -> mnesia_lib:other_val(Var, Reason);
Value -> Value
end.
@@ -51,7 +50,7 @@ disc_load_table(Tab, Reason) ->
?eval_debug_fun({?MODULE, do_get_disc_copy},
[{tab, Tab},
{reason, Reason},
- {storage, Storage},
+ {storage, Storage},
{type, Type}]),
do_get_disc_copy2(Tab, Reason, Storage, Type).
@@ -63,19 +62,19 @@ do_get_disc_copy2(Tab, Reason, Storage, Type) when Storage == disc_copies ->
%% NOW we create the actual table
Repair = mnesia_monitor:get_env(auto_repair),
Args = [{keypos, 2}, public, named_table, Type],
- case Reason of
+ case Reason of
{dumper, _} -> %% Resources allready allocated
ignore;
_ ->
mnesia_monitor:mktab(Tab, Args),
- Count = mnesia_log:dcd2ets(Tab, Repair),
+ Count = mnesia_log:dcd2ets(Tab, Repair),
case ets:info(Tab, size) of
X when X < Count * 4 ->
- ok = mnesia_log:ets2dcd(Tab);
+ ok = mnesia_log:ets2dcd(Tab);
_ ->
ignore
end
- end,
+ end,
mnesia_index:init_index(Tab, Storage),
snmpify(Tab, Storage),
set({Tab, load_node}, node()),
@@ -84,7 +83,7 @@ do_get_disc_copy2(Tab, Reason, Storage, Type) when Storage == disc_copies ->
do_get_disc_copy2(Tab, Reason, Storage, Type) when Storage == ram_copies ->
Args = [{keypos, 2}, public, named_table, Type],
- case Reason of
+ case Reason of
{dumper, _} -> %% Resources allready allocated
ignore;
_ ->
@@ -94,12 +93,12 @@ do_get_disc_copy2(Tab, Reason, Storage, Type) when Storage == ram_copies ->
Repair = mnesia_monitor:get_env(auto_repair),
case mnesia_monitor:use_dir() of
true ->
- case mnesia_lib:exists(Fname) of
+ case mnesia_lib:exists(Fname) of
true -> mnesia_log:dcd2ets(Tab, Repair);
false ->
case mnesia_lib:exists(Datname) of
true ->
- mnesia_lib:dets_to_ets(Tab, Tab, Datname,
+ mnesia_lib:dets_to_ets(Tab, Tab, Datname,
Type, Repair, no);
false ->
false
@@ -154,11 +153,11 @@ do_get_disc_copy2(Tab, Reason, Storage, Type) when Storage == disc_only_copies -
%% Disable rehashing of table
%% Release read lock on table
%% Send table to receiver in chunks
-%%
+%%
%% Grab read lock on table
%% Block dirty updates
%% Update wherabouts
-%%
+%%
%% Cancel the update subscription
%% Process the subscription events
%% Optionally dump to disc
@@ -166,7 +165,7 @@ do_get_disc_copy2(Tab, Reason, Storage, Type) when Storage == disc_only_copies -
%% Release read lock on table
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--define(MAX_TRANSFER_SIZE, 7500).
+-define(MAX_TRANSFER_SIZE, 7500).
-define(MAX_RAM_FILE_SIZE, 1000000).
-define(MAX_RAM_TRANSFERS, (?MAX_RAM_FILE_SIZE div ?MAX_TRANSFER_SIZE) + 1).
-define(MAX_NOPACKETS, 20).
@@ -187,14 +186,14 @@ try_net_load_table(Tab, Reason, Ns, Cs) ->
do_get_network_copy(Tab, _Reason, _Ns, unknown, _Cs) ->
verbose("Local table copy of ~p has recently been deleted, ignored.~n", [Tab]),
{not_loaded, storage_unknown};
-do_get_network_copy(Tab, Reason, Ns, Storage, Cs) ->
+do_get_network_copy(Tab, Reason, Ns, Storage, Cs) ->
[Node | Tail] = Ns,
case lists:member(Node,val({current, db_nodes})) of
true ->
dbg_out("Getting table ~p (~p) from node ~p: ~p~n",
[Tab, Storage, Node, Reason]),
?eval_debug_fun({?MODULE, do_get_network_copy},
- [{tab, Tab}, {reason, Reason},
+ [{tab, Tab}, {reason, Reason},
{nodes, Ns}, {storage, Storage}]),
case init_receiver(Node, Tab, Storage, Cs, Reason) of
ok ->
@@ -208,7 +207,7 @@ do_get_network_copy(Tab, Reason, Ns, Storage, Cs) ->
restart ->
try_net_load_table(Tab, Reason, Tail ++ [Node], Cs);
down ->
- try_net_load_table(Tab, Reason, Tail, Cs)
+ try_net_load_table(Tab, Reason, Tail, Cs)
end;
false ->
try_net_load_table(Tab, Reason, Tail, Cs)
@@ -223,10 +222,10 @@ do_snmpify(Tab, Us, Storage) ->
Snmp = mnesia_snmp_hook:create_table(Us, Tab, Storage),
set({Tab, {index, snmp}}, Snmp).
-%% Start the recieiver
+%% Start the recieiver
init_receiver(Node, Tab, Storage, Cs, Reas={dumper,add_table_copy}) ->
case start_remote_sender(Node, Tab, Storage) of
- {SenderPid, TabSize, DetsData} ->
+ {SenderPid, TabSize, DetsData} ->
start_receiver(Tab,Storage,Cs,SenderPid,TabSize,DetsData,Reas);
Else ->
Else
@@ -234,21 +233,21 @@ init_receiver(Node, Tab, Storage, Cs, Reas={dumper,add_table_copy}) ->
init_receiver(Node, Tab,Storage,Cs,Reason) ->
%% Grab a schema lock to avoid deadlock between table_loader and schema_commit dumping.
%% Both may grab tables-locks in different order.
- Load =
- fun() ->
- {_,Tid,Ts} = get(mnesia_activity_state),
+ Load =
+ fun() ->
+ {_,Tid,Ts} = get(mnesia_activity_state),
mnesia_locker:rlock(Tid, Ts#tidstore.store, {schema, Tab}),
- %% Check that table still exists
+ %% Check that table still exists
Active = val({Tab, active_replicas}),
%% Check that we havn't loaded it already
case val({Tab,where_to_read}) == node() of
true -> ok;
_ ->
- %% And that sender still got a copy
- %% (something might have happend while
+ %% And that sender still got a copy
+ %% (something might have happend while
%% we where waiting for the lock)
true = lists:member(Node, Active),
- {SenderPid, TabSize, DetsData} =
+ {SenderPid, TabSize, DetsData} =
start_remote_sender(Node,Tab,Storage),
Init = table_init_fun(SenderPid),
Args = [self(),Tab,Storage,Cs,SenderPid,
@@ -258,18 +257,18 @@ init_receiver(Node, Tab,Storage,Cs,Reason) ->
wait_on_load_complete(Pid)
end
end,
- Res =
+ Res =
case mnesia:transaction(Load, 20) of
- {atomic, {error,Result}} when
- element(1,Reason) == dumper ->
+ {atomic, {error,Result}} when
+ element(1,Reason) == dumper ->
{error,Result};
- {atomic, {error,Result}} ->
+ {atomic, {error,Result}} ->
fatal("Cannot create table ~p: ~p~n",
[[Tab, Storage], Result]);
{atomic, Result} -> Result;
{aborted, nomore} -> restart;
- {aborted, _Reas} ->
- verbose("Receiver failed on ~p from ~p:~nReason: ~p~n",
+ {aborted, _Reas} ->
+ verbose("Receiver failed on ~p from ~p:~nReason: ~p~n",
[Tab,Node,_Reas]),
down %% either this node or sender is dying
end,
@@ -279,7 +278,7 @@ init_receiver(Node, Tab,Storage,Cs,Reason) ->
start_remote_sender(Node,Tab,Storage) ->
mnesia_controller:start_remote_sender(Node, Tab, self(), Storage),
put(mnesia_table_sender_node, {Tab, Node}),
- receive
+ receive
{SenderPid, {first, TabSize}} ->
{SenderPid, TabSize, false};
{SenderPid, {first, TabSize, DetsData}} ->
@@ -291,22 +290,14 @@ start_remote_sender(Node,Tab,Storage) ->
end.
table_init_fun(SenderPid) ->
- PConv = mnesia_monitor:needs_protocol_conversion(node(SenderPid)),
- MeMyselfAndI = self(),
fun(read) ->
- Receiver =
- if
- PConv == true ->
- MeMyselfAndI ! {actual_tabrec, self()},
- MeMyselfAndI; %% Old mnesia
- PConv == false -> self()
- end,
+ Receiver = self(),
SenderPid ! {Receiver, more},
get_data(SenderPid, Receiver)
end.
%% Add_table_copy get's it's own locks.
-start_receiver(Tab,Storage,Cs,SenderPid,TabSize,DetsData,{dumper,add_table_copy}) ->
+start_receiver(Tab,Storage,Cs,SenderPid,TabSize,DetsData,{dumper,add_table_copy}) ->
Init = table_init_fun(SenderPid),
case do_init_table(Tab,Storage,Cs,SenderPid,TabSize,DetsData,self(), Init) of
Err = {error, _} ->
@@ -317,8 +308,8 @@ start_receiver(Tab,Storage,Cs,SenderPid,TabSize,DetsData,{dumper,add_table_copy}
end.
spawned_receiver(ReplyTo,Tab,Storage,Cs, SenderPid,TabSize,DetsData, Init) ->
- process_flag(trap_exit, true),
- Done = do_init_table(Tab,Storage,Cs,
+ process_flag(trap_exit, true),
+ Done = do_init_table(Tab,Storage,Cs,
SenderPid,TabSize,DetsData,
ReplyTo, Init),
ReplyTo ! {self(),Done},
@@ -327,17 +318,17 @@ spawned_receiver(ReplyTo,Tab,Storage,Cs, SenderPid,TabSize,DetsData, Init) ->
exit(normal).
wait_on_load_complete(Pid) ->
- receive
- {Pid, Res} ->
+ receive
+ {Pid, Res} ->
Res;
- {'EXIT', Pid, Reason} ->
+ {'EXIT', Pid, Reason} ->
exit(Reason);
- Else ->
+ Else ->
Pid ! Else,
wait_on_load_complete(Pid)
end.
-do_init_table(Tab,Storage,Cs,SenderPid,
+do_init_table(Tab,Storage,Cs,SenderPid,
TabSize,DetsInfo,OrigTabRec,Init) ->
case create_table(Tab, TabSize, Storage, Cs) of
{Storage,Tab} ->
@@ -345,11 +336,9 @@ do_init_table(Tab,Storage,Cs,SenderPid,
Node = node(SenderPid),
put(mnesia_table_receiver, {Tab, Node, SenderPid}),
mnesia_tm:block_tab(Tab),
- PConv = mnesia_monitor:needs_protocol_conversion(Node),
-
- case init_table(Tab,Storage,Init,PConv,DetsInfo,SenderPid) of
- ok ->
- tab_receiver(Node,Tab,Storage,Cs,PConv,OrigTabRec);
+ case init_table(Tab,Storage,Init,DetsInfo,SenderPid) of
+ ok ->
+ tab_receiver(Node,Tab,Storage,Cs,OrigTabRec);
Reason ->
Msg = "[d]ets:init table failed",
verbose("~s: ~p: ~p~n", [Msg, Tab, Reason]),
@@ -360,7 +349,7 @@ do_init_table(Tab,Storage,Cs,SenderPid,
end.
create_table(Tab, TabSize, Storage, Cs) ->
- if
+ if
Storage == disc_only_copies ->
mnesia_lib:lock_table(Tab),
Tmp = mnesia_lib:tab2tmp(Tab),
@@ -390,54 +379,30 @@ create_table(Tab, TabSize, Storage, Cs) ->
end
end.
-tab_receiver(Node, Tab, Storage, Cs, PConv, OrigTabRec) ->
+tab_receiver(Node, Tab, Storage, Cs, OrigTabRec) ->
receive
- {SenderPid, {no_more, DatBin}} when PConv == false ->
+ {SenderPid, {no_more, DatBin}} ->
finish_copy(Storage,Tab,Cs,SenderPid,DatBin,OrigTabRec);
-
- %% Protocol conversion hack
- {SenderPid, {no_more, DatBin}} when is_pid(PConv) ->
- PConv ! {SenderPid, no_more},
- receive
- {old_init_table_complete, ok} ->
- finish_copy(Storage, Tab, Cs, SenderPid, DatBin,OrigTabRec);
- {old_init_table_complete, Reason} ->
- Msg = "OLD: [d]ets:init table failed",
- verbose("~s: ~p: ~p~n", [Msg, Tab, Reason]),
- down(Tab, Storage)
- end;
-
- {actual_tabrec, Pid} ->
- tab_receiver(Node, Tab, Storage, Cs, Pid,OrigTabRec);
-
- {SenderPid, {more, [Recs]}} when is_pid(PConv) ->
- PConv ! {SenderPid, {more, Recs}}, %% Forward Msg to OldNodes
- tab_receiver(Node, Tab, Storage, Cs, PConv,OrigTabRec);
- {'EXIT', PConv, Reason} -> %% [d]ets:init process crashed
- Msg = "Receiver crashed",
- verbose("~s: ~p: ~p~n", [Msg, Tab, Reason]),
- down(Tab, Storage);
-
%% Protocol conversion hack
{copier_done, Node} ->
verbose("Sender of table ~p crashed on node ~p ~n", [Tab, Node]),
down(Tab, Storage);
-
+
{'EXIT', Pid, Reason} ->
handle_exit(Pid, Reason),
- tab_receiver(Node, Tab, Storage, Cs, PConv,OrigTabRec)
+ tab_receiver(Node, Tab, Storage, Cs, OrigTabRec)
end.
make_table_fun(Pid, TabRec) ->
fun(close) ->
ok;
(read) ->
- get_data(Pid, TabRec)
+ get_data(Pid, TabRec)
end.
get_data(Pid, TabRec) ->
- receive
+ receive
{Pid, {more_z, CompressedRecs}} when is_binary(CompressedRecs) ->
Pid ! {TabRec, more},
{zlib_uncompress(CompressedRecs), make_table_fun(Pid,TabRec)};
@@ -448,7 +413,7 @@ get_data(Pid, TabRec) ->
end_of_input;
{copier_done, Node} ->
case node(Pid) of
- Node ->
+ Node ->
{copier_done, Node};
_ ->
get_data(Pid, TabRec)
@@ -458,10 +423,10 @@ get_data(Pid, TabRec) ->
get_data(Pid, TabRec)
end.
-init_table(Tab, disc_only_copies, Fun, false, DetsInfo,Sender) ->
+init_table(Tab, disc_only_copies, Fun, DetsInfo,Sender) ->
ErtsVer = erlang:system_info(version),
case DetsInfo of
- {ErtsVer, DetsData} ->
+ {ErtsVer, DetsData} ->
Res = (catch dets:is_compatible_bchunk_format(Tab, DetsData)),
case Res of
{'EXIT',{undef,[{dets,_,_}|_]}} ->
@@ -481,28 +446,19 @@ init_table(Tab, disc_only_copies, Fun, false, DetsInfo,Sender) ->
_ ->
dets:init_table(Tab, Fun)
end;
-init_table(Tab, _, Fun, false, _DetsInfo,_) ->
+init_table(Tab, _, Fun, _DetsInfo,_) ->
case catch ets:init_table(Tab, Fun) of
true ->
ok;
{'EXIT', Else} -> Else
- end;
-init_table(Tab, Storage, Fun, true, _DetsInfo, Sender) -> %% Old Nodes
- spawn_link(?MODULE, old_node_init_table,
- [Tab, Storage, Fun, self(), false, Sender]),
- ok.
+ end.
-old_node_init_table(Tab, Storage, Fun, TabReceiver, DetsInfo,Sender) ->
- Res = init_table(Tab, Storage, Fun, false, DetsInfo,Sender),
- TabReceiver ! {old_init_table_complete, Res},
- unlink(TabReceiver),
- ok.
finish_copy(Storage,Tab,Cs,SenderPid,DatBin,OrigTabRec) ->
TabRef = {Storage, Tab},
subscr_receiver(TabRef, Cs#cstruct.record_name),
case handle_last(TabRef, Cs#cstruct.type, DatBin) of
- ok ->
+ ok ->
mnesia_index:init_index(Tab, Storage),
snmpify(Tab, Storage),
%% OrigTabRec must not be the spawned tab-receiver
@@ -534,7 +490,7 @@ subscr_receiver(TabRef = {_, Tab}, RecName) ->
ok
end.
-handle_event(TabRef, write, Rec) ->
+handle_event(TabRef, write, Rec) ->
db_put(TabRef, Rec);
handle_event(TabRef, delete, {_Tab, Key}) ->
db_erase(TabRef, Key);
@@ -545,8 +501,8 @@ handle_event(TabRef, clear_table, {_Tab, _Key}) ->
handle_last({disc_copies, Tab}, _Type, nobin) ->
Ret = mnesia_log:ets2dcd(Tab),
- Fname = mnesia_lib:tab2dat(Tab),
- case mnesia_lib:exists(Fname) of
+ Fname = mnesia_lib:tab2dat(Tab),
+ case mnesia_lib:exists(Fname) of
true -> %% Remove old .DAT files.
file:delete(Fname);
false ->
@@ -653,31 +609,29 @@ send_table(Pid, Tab, RemoteS) ->
{error, {no_exists, Tab}};
Storage ->
%% Send first
- TabSize = mnesia:table_info(Tab, size),
- Pconvert = mnesia_monitor:needs_protocol_conversion(node(Pid)),
+ TabSize = mnesia:table_info(Tab, size),
KeysPerTransfer = calc_nokeys(Storage, Tab),
ChunkData = dets:info(Tab, bchunk_format),
- UseDetsChunk =
- Storage == RemoteS andalso
- Storage == disc_only_copies andalso
- ChunkData /= undefined andalso
- Pconvert == false,
- if
+ UseDetsChunk =
+ Storage == RemoteS andalso
+ Storage == disc_only_copies andalso
+ ChunkData /= undefined,
+ if
UseDetsChunk == true ->
DetsInfo = erlang:system_info(version),
Pid ! {self(), {first, TabSize, {DetsInfo, ChunkData}}};
true ->
Pid ! {self(), {first, TabSize}}
end,
-
+
%% Debug info
put(mnesia_table_sender, {Tab, node(Pid), Pid}),
{Init, Chunk} = reader_funcs(UseDetsChunk, Tab, Storage, KeysPerTransfer),
-
+
SendIt = fun() ->
prepare_copy(Pid, Tab, Storage),
- send_more(Pid, 1, Chunk, Init(), Tab, Pconvert),
+ send_more(Pid, 1, Chunk, Init(), Tab),
finish_copy(Pid, Tab, Storage, RemoteS)
end,
@@ -698,7 +652,7 @@ send_table(Pid, Tab, RemoteS) ->
{error, Reason}
end
end.
-
+
prepare_copy(Pid, Tab, Storage) ->
Trans =
fun() ->
@@ -717,11 +671,11 @@ prepare_copy(Pid, Tab, Storage) ->
update_where_to_write(Tab, Node) ->
case val({Tab, access_mode}) of
- read_only ->
+ read_only ->
ignore;
- read_write ->
+ read_write ->
Current = val({current, db_nodes}),
- Ns =
+ Ns =
case lists:member(Node, Current) of
true -> Current;
false -> [Node | Current]
@@ -729,27 +683,27 @@ update_where_to_write(Tab, Node) ->
update_where_to_write(Ns, Tab, Node)
end.
-update_where_to_write([], _, _) ->
+update_where_to_write([], _, _) ->
ok;
update_where_to_write([H|T], Tab, AddNode) ->
- rpc:call(H, mnesia_controller, call,
+ rpc:call(H, mnesia_controller, call,
[{update_where_to_write, [add, Tab, AddNode], self()}]),
update_where_to_write(T, Tab, AddNode).
-send_more(Pid, N, Chunk, DataState, Tab, OldNode) ->
+send_more(Pid, N, Chunk, DataState, Tab) ->
receive
{NewPid, more} ->
- case send_packet(N - 1, NewPid, Chunk, DataState, OldNode) of
- New when is_integer(New) ->
+ case send_packet(N - 1, NewPid, Chunk, DataState) of
+ New when is_integer(New) ->
New - 1;
NewData ->
- send_more(NewPid, ?MAX_NOPACKETS, Chunk, NewData, Tab, OldNode)
+ send_more(NewPid, ?MAX_NOPACKETS, Chunk, NewData, Tab)
end;
{_NewPid, {old_protocol, Tab}} ->
Storage = val({Tab, storage_type}),
- {Init, NewChunk} =
+ {Init, NewChunk} =
reader_funcs(false, Tab, Storage, calc_nokeys(Storage, Tab)),
- send_more(Pid, 1, NewChunk, Init(), Tab, OldNode);
+ send_more(Pid, 1, NewChunk, Init(), Tab);
{copier_done, Node} when Node == node(Pid)->
verbose("Receiver of table ~p crashed on ~p (more)~n", [Tab, Node]),
@@ -770,7 +724,7 @@ dets_bchunk(Tab, Chunk) -> %% Arrg
case dets:bchunk(Tab, Chunk) of
{Cont, Data} -> {Data, Cont};
Else -> Else
- end.
+ end.
zlib_compress(Data, Level) ->
BinData = term_to_binary(Data),
@@ -793,28 +747,20 @@ compression_level() ->
Val -> Val
end.
-send_packet(N, Pid, _Chunk, '$end_of_table', OldNode) ->
- case OldNode of
- true -> ignore; %% Old nodes can't handle the new no_more
- false -> Pid ! {self(), no_more}
- end,
+send_packet(N, Pid, _Chunk, '$end_of_table') ->
+ Pid ! {self(), no_more},
N;
-send_packet(N, Pid, Chunk, {[], Cont}, OldNode) ->
- send_packet(N, Pid, Chunk, Chunk(Cont), OldNode);
-send_packet(N, Pid, Chunk, {Recs, Cont}, OldNode) when N < ?MAX_NOPACKETS ->
- case OldNode of
- true ->
- Pid ! {self(), {more, [Recs]}}; %% Old need's wrapping list
- false ->
- case compression_level() of
- 0 ->
- Pid ! {self(), {more, Recs}};
- Level ->
- Pid ! {self(), {more_z, zlib_compress(Recs, Level)}}
- end
+send_packet(N, Pid, Chunk, {[], Cont}) ->
+ send_packet(N, Pid, Chunk, Chunk(Cont));
+send_packet(N, Pid, Chunk, {Recs, Cont}) when N < ?MAX_NOPACKETS ->
+ case compression_level() of
+ 0 ->
+ Pid ! {self(), {more, Recs}};
+ Level ->
+ Pid ! {self(), {more_z, zlib_compress(Recs, Level)}}
end,
- send_packet(N+1, Pid, Chunk, Chunk(Cont), OldNode);
-send_packet(_N, _Pid, _Chunk, DataState, _OldNode) ->
+ send_packet(N+1, Pid, Chunk, Chunk(Cont));
+send_packet(_N, _Pid, _Chunk, DataState) ->
DataState.
finish_copy(Pid, Tab, Storage, RemoteS) ->
@@ -855,5 +801,5 @@ dat2bin(_Tab, _LocalS, _RemoteS) ->
handle_exit(Pid, Reason) when node(Pid) == node() ->
exit(Reason);
-handle_exit(_Pid, _Reason) -> %% Not from our node, this will be handled by
+handle_exit(_Pid, _Reason) -> %% Not from our node, this will be handled by
ignore. %% mnesia_down soon.