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-rw-r--r--lib/mnesia/doc/src/Mnesia_chap3.xml2
-rw-r--r--lib/mnesia/doc/src/Mnesia_chap5.xmlsrc1
-rw-r--r--lib/mnesia/doc/src/mnesia.xml18
-rw-r--r--lib/mnesia/doc/src/notes.xml25
-rw-r--r--lib/mnesia/src/mnesia.erl6
-rw-r--r--lib/mnesia/src/mnesia_recover.erl31
-rw-r--r--lib/mnesia/src/mnesia_subscr.erl2
-rw-r--r--lib/mnesia/test/mnesia_isolation_test.erl4
-rw-r--r--lib/mnesia/vsn.mk2
9 files changed, 73 insertions, 18 deletions
diff --git a/lib/mnesia/doc/src/Mnesia_chap3.xml b/lib/mnesia/doc/src/Mnesia_chap3.xml
index d6b4a1c6a1..ae704b4199 100644
--- a/lib/mnesia/doc/src/Mnesia_chap3.xml
+++ b/lib/mnesia/doc/src/Mnesia_chap3.xml
@@ -152,7 +152,7 @@ Transformer =
<c>ignore</c>, it indicates that only the meta data about the table will
be updated. Usage of <c>ignore</c> is not recommended (since it creates
inconsistencies between the meta data and the actual data) but included
- as a possibility for the user do to his own (off-line) transform.</p>
+ as a possibility for the user to do his own (off-line) transform.</p>
</item>
<item><c>change_table_copy_type(Tab, Node, ToType)</c>. This
function changes the storage type of a table. For example, a
diff --git a/lib/mnesia/doc/src/Mnesia_chap5.xmlsrc b/lib/mnesia/doc/src/Mnesia_chap5.xmlsrc
index 65b950bd46..127c23e0f7 100644
--- a/lib/mnesia/doc/src/Mnesia_chap5.xmlsrc
+++ b/lib/mnesia/doc/src/Mnesia_chap5.xmlsrc
@@ -867,6 +867,7 @@ ok
</section>
<section>
+ <marker id="event_handling"></marker>
<title>Mnesia Event Handling</title>
<p>System events and table events are the two categories of events
that Mnesia will generate in various situations.
diff --git a/lib/mnesia/doc/src/mnesia.xml b/lib/mnesia/doc/src/mnesia.xml
index 72e9bd7e8f..ed5b879f7f 100644
--- a/lib/mnesia/doc/src/mnesia.xml
+++ b/lib/mnesia/doc/src/mnesia.xml
@@ -151,9 +151,9 @@ If a new item is inserted with the same key as
</item>
<item>
<p><c>local_content</c> When an application requires
- tables whose contents is local to each node,
+ tables whose contents are local to each node,
<c>local_content</c> tables may be used. The name of the
- table is known to all Mnesia nodes, but its contents is
+ table is known to all Mnesia nodes, but its contents are
unique on each node. This means that access to such a table
must be done locally. Set the <c>local_content</c> field to
<c>true</c> if you want to enable the <c>local_content</c>
@@ -579,7 +579,7 @@ mnesia:add_table_index(person, age)
<desc>
<p>The tables are backed up to external media using the backup
module <c>BackupMod</c>. Tables with the local contents
- property is being backed up as they exist on the current
+ property are backed up as they exist on the current
node. <c>BackupMod</c> is the default backup callback
module obtained by
<c>mnesia:system_info(backup_module)</c>. See the User's
@@ -863,7 +863,7 @@ mnesia:create_table(person,
{attributes, record_info(fields,person)}]).
</code>
<p>The specification of <c>index</c> and <c>attributes</c> may be
- hard coded as <c>{index, [2]}</c> and
+ hard coded as <c>{index, [4]}</c> and
<c>{attributes, [name, age, address, salary, children]}</c>
respectively.
</p>
@@ -2188,12 +2188,13 @@ mnesia:create_table(employee,
</desc>
</func>
<func>
- <name>subscribe(EventCategory)</name>
+ <name>subscribe(EventCategory) -> {ok, Node} | {error, Reason} </name>
<fsummary>Subscribe to events of type <c>EventCategory</c>.</fsummary>
<desc>
<p>Ensures that a copy of all events of type
<c>EventCategory</c> are sent to the caller. The event
- types available are described in the Mnesia User's Guide.</p>
+ types available are described in the Mnesia User's Guide at <seealso marker="Mnesia_chap5#event_handling">Mnesia Event Handling</seealso>.</p>
+ <p><c>Node</c> is the local node. For table events to be subscribed, mnesia must have a readable local copy of the table on the node.</p>
</desc>
</func>
<func>
@@ -2766,7 +2767,7 @@ raise(Name, Amount) ->
new type. The <c>Fun</c> argument can also be the atom
<c>ignore</c>, it indicates that only the meta data about the table will
be updated. Usage of <c>ignore</c> is not recommended but included
- as a possibility for the user do to his own transform.
+ as a possibility for the user to do his own transform.
<c>NewAttributeList</c> and <c>NewRecordName</c>
specifies the attributes and the new record type of converted
table. Table name will always remain unchanged, if the
@@ -2861,11 +2862,12 @@ raise(Name, Amount) ->
</desc>
</func>
<func>
- <name>unsubscribe(EventCategory)</name>
+ <name>unsubscribe(EventCategory) -> {ok, Node} | {error, Reason} </name>
<fsummary>Subscribe to events of type <c>EventCategory</c>.</fsummary>
<desc>
<p>Stops sending events of type
<c>EventCategory</c> to the caller.</p>
+ <p><c>Node</c> is the local node.</p>
</desc>
</func>
<func>
diff --git a/lib/mnesia/doc/src/notes.xml b/lib/mnesia/doc/src/notes.xml
index e5c7d87f52..18f72f4faf 100644
--- a/lib/mnesia/doc/src/notes.xml
+++ b/lib/mnesia/doc/src/notes.xml
@@ -38,7 +38,30 @@
thus constitutes one section in this document. The title of each
section is the version number of Mnesia.</p>
- <section><title>Mnesia 4.12.3</title>
+ <section><title>Mnesia 4.12.4</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Fixed a spelling mistake in mnesia documentation.</p>
+ <p>
+ Own Id: OTP-12278</p>
+ </item>
+ <item>
+ <p>
+ Matching data with <c>mnesia:match_object/1</c> did not
+ work as expected in some cases, when data was written in
+ the same transaction before the matching was invoked.</p>
+ <p>
+ Own Id: OTP-12304 Aux Id: Seq12745 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
+<section><title>Mnesia 4.12.3</title>
<section><title>Fixed Bugs and Malfunctions</title>
<list>
diff --git a/lib/mnesia/src/mnesia.erl b/lib/mnesia/src/mnesia.erl
index b7d80c1370..8f14831ad3 100644
--- a/lib/mnesia/src/mnesia.erl
+++ b/lib/mnesia/src/mnesia.erl
@@ -1140,10 +1140,12 @@ match_object(_Tid, _Ts, Tab, Pat, _LockKind) ->
add_written_match(S, Pat, Tab, Objs) ->
Ops = find_ops(S, Tab, Pat),
- add_match(Ops, Objs, val({Tab, setorbag})).
+ FixedRes = add_match(Ops, Objs, val({Tab, setorbag})),
+ MS = ets:match_spec_compile([{Pat, [], ['$_']}]),
+ ets:match_spec_run(FixedRes, MS).
find_ops(S, Tab, Pat) ->
- GetWritten = [{{{Tab, '_'}, Pat, write}, [], ['$_']},
+ GetWritten = [{{{Tab, '_'}, '_', write}, [], ['$_']},
{{{Tab, '_'}, '_', delete}, [], ['$_']},
{{{Tab, '_'}, Pat, delete_object}, [], ['$_']}],
ets:select(S, GetWritten).
diff --git a/lib/mnesia/src/mnesia_recover.erl b/lib/mnesia/src/mnesia_recover.erl
index b6492707e2..eeb4fa0ced 100644
--- a/lib/mnesia/src/mnesia_recover.erl
+++ b/lib/mnesia/src/mnesia_recover.erl
@@ -689,12 +689,29 @@ handle_call({connect_nodes, Ns}, From, State) ->
%% called from handle_info
gen_server:reply(From, {[], AlreadyConnected}),
{noreply, State};
- GoodNodes ->
+ ProbablyGoodNodes ->
%% Now we have agreed upon a protocol with some new nodes
- %% and we may use them when we recover transactions
+ %% and we may use them when we recover transactions.
+ %%
+ %% Just in case Mnesia was stopped on some of those nodes
+ %% between the protocol negotiation and now, we check one
+ %% more time the state of Mnesia.
+ %%
+ %% Of course, there is still a chance that mnesia_down
+ %% events occur during this check and we miss them. To
+ %% prevent it, handle_cast({mnesia_down, ...}, ...) removes
+ %% the down node again, in addition to mnesia_down/1.
+ %%
+ %% See a comment in handle_cast({mnesia_down, ...}, ...).
+ Verify = fun(N) ->
+ Run = mnesia_lib:is_running(N),
+ Run =:= yes orelse Run =:= starting
+ end,
+ GoodNodes = [N || N <- ProbablyGoodNodes, Verify(N)],
+
mnesia_lib:add_list(recover_nodes, GoodNodes),
cast({announce_all, GoodNodes}),
- case get_master_nodes(schema) of
+ case get_master_nodes(schema) of
[] ->
Context = starting_partitioned_network,
mnesia_monitor:detect_inconcistency(GoodNodes, Context);
@@ -842,6 +859,14 @@ handle_cast({what_decision, Node, OtherD}, State) ->
{noreply, State};
handle_cast({mnesia_down, Node}, State) ->
+ %% The node was already removed from recover_nodes in mnesia_down/1,
+ %% but we do it again here in the mnesia_recover process, in case
+ %% another event incorrectly added it back. This can happen during
+ %% Mnesia startup which takes time betweenthe connection, the
+ %% protocol negotiation and the merge of the schema.
+ %%
+ %% See a comment in handle_call({connect_nodes, ...), ...).
+ mnesia_lib:del(recover_nodes, Node),
case State#state.unclear_decision of
undefined ->
{noreply, State};
diff --git a/lib/mnesia/src/mnesia_subscr.erl b/lib/mnesia/src/mnesia_subscr.erl
index 9272211ad2..866a57e370 100644
--- a/lib/mnesia/src/mnesia_subscr.erl
+++ b/lib/mnesia/src/mnesia_subscr.erl
@@ -225,7 +225,7 @@ call(Msg) ->
Res = gen_server:call(Pid, Msg, infinity),
%% We get an exit signal if server dies
receive
- {'EXIT', _Pid, _Reason} ->
+ {'EXIT', Pid, _Reason} ->
{error, {node_not_running, node()}}
after 0 ->
Res
diff --git a/lib/mnesia/test/mnesia_isolation_test.erl b/lib/mnesia/test/mnesia_isolation_test.erl
index d57f976d1f..8468472cf2 100644
--- a/lib/mnesia/test/mnesia_isolation_test.erl
+++ b/lib/mnesia/test/mnesia_isolation_test.erl
@@ -1584,7 +1584,8 @@ write_shadows(Config) when is_list(Config) ->
?match([RecA2], mnesia:read({Tab, a})),
?match([RecA2], mnesia:wread({Tab, a})),
- ?match([RecA2], mnesia:match_object(PatA2)), %% delete shadow old but not new write - is the new value visable
+ ?match([], mnesia:match_object(PatA1)), %% delete shadow old but not new write
+ ?match([RecA2], mnesia:match_object(PatA2)), %% is the new value visable
?match([a], mnesia:all_keys(Tab)),
?match([RecA2], mnesia:index_match_object(PatA2, ValPos)),
@@ -1643,6 +1644,7 @@ delete_shadows(Config) when is_list(Config) ->
?match([RecA2], mnesia:read({Tab, a})),
?match([RecA2], mnesia:wread({Tab, a})),
+ ?match([], mnesia:match_object(PatA1)),
?match([RecA2], mnesia:match_object(PatA2)),
?match([a], mnesia:all_keys(Tab)),
?match([RecA2], mnesia:index_match_object(PatA2, ValPos)),
diff --git a/lib/mnesia/vsn.mk b/lib/mnesia/vsn.mk
index d5b96c5c76..94eb360591 100644
--- a/lib/mnesia/vsn.mk
+++ b/lib/mnesia/vsn.mk
@@ -1 +1 @@
-MNESIA_VSN = 4.12.3
+MNESIA_VSN = 4.12.4
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-05 14:37:26 +0000