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Folds need a separate cursor, but not a separate session, so use

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the shared connection and session.
This commit is contained in:
Gregory Burd 2013-03-21 21:39:47 -04:00
parent 9834f54991
commit 85b84a5343
1 changed files with 16 additions and 20 deletions
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32
src/riak_kv_wterl_backend.erl
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@ -175,12 +175,12 @@ delete(Bucket, Key, _IndexSpecs, #state{session=Session, table=Table}=State0) ->
any(),
[],
state()) -> {ok, any()} | {async, fun()}.
fold_buckets(FoldBucketsFun, Acc, Opts, #state{table=Table}) ->
{ok, Connection} = wterl_conn:get(),
fold_buckets(FoldBucketsFun, Acc, Opts, #state{session=undefined}=State) ->
fold_buckets(FoldBucketsFun, Acc, Opts, establish_session(State));
fold_buckets(FoldBucketsFun, Acc, Opts, #state{session=Session, table=Table}) ->
FoldFun = fold_buckets_fun(FoldBucketsFun),
BucketFolder =
fun() ->
{ok, Session} = wterl:session_open(Connection),
case wterl:cursor_open(Session, Table) of
{error, "No such file or directory"} ->
Acc;
@ -193,8 +193,7 @@ fold_buckets(FoldBucketsFun, Acc, Opts, #state{table=Table}) ->
{break, AccFinal} ->
AccFinal
after
ok = wterl:cursor_close(Cursor),
ok = wterl:session_close(Session)
ok = wterl:cursor_close(Cursor)
end
end
end,
@ -210,9 +209,9 @@ fold_buckets(FoldBucketsFun, Acc, Opts, #state{table=Table}) ->
any(),
[{atom(), term()}],
state()) -> {ok, term()} | {async, fun()}.
fold_keys(FoldKeysFun, Acc, Opts, #state{table=Table}) ->
{ok, Connection} = wterl_conn:get(),
fold_keys(FoldKeysFun, Acc, Opts, #state{session=undefined}=State) ->
fold_keys(FoldKeysFun, Acc, Opts, establish_session(State));
fold_keys(FoldKeysFun, Acc, Opts, #state{session=Session, table=Table}) ->
%% Figure out how we should limit the fold: by bucket, by
%% secondary index, or neither (fold across everything.)
Bucket = lists:keyfind(bucket, 1, Opts),
@ -229,7 +228,6 @@ fold_keys(FoldKeysFun, Acc, Opts, #state{table=Table}) ->
FoldFun = fold_keys_fun(FoldKeysFun, Limiter),
KeyFolder =
fun() ->
{ok, Session} = wterl:session_open(Connection),
case wterl:cursor_open(Session, Table) of
{error, "No such file or directory"} ->
Acc;
@ -240,8 +238,7 @@ fold_keys(FoldKeysFun, Acc, Opts, #state{table=Table}) ->
{break, AccFinal} ->
AccFinal
after
ok = wterl:cursor_close(Cursor),
ok = wterl:session_close(Session)
ok = wterl:cursor_close(Cursor)
end
end
end,
@ -257,13 +254,13 @@ fold_keys(FoldKeysFun, Acc, Opts, #state{table=Table}) ->
any(),
[{atom(), term()}],
state()) -> {ok, any()} | {async, fun()}.
fold_objects(FoldObjectsFun, Acc, Opts, #state{table=Table}) ->
{ok, Connection} = wterl_conn:get(),
fold_objects(FoldObjectsFun, Acc, Opts, #state{session=undefined}=State) ->
fold_objects(FoldObjectsFun, Acc, Opts, establish_session(State));
fold_objects(FoldObjectsFun, Acc, Opts, #state{session=Session, table=Table}) ->
Bucket = proplists:get_value(bucket, Opts),
FoldFun = fold_objects_fun(FoldObjectsFun, Bucket),
ObjectFolder =
fun() ->
{ok, Session} = wterl:session_open(Connection),
case wterl:cursor_open(Session, Table) of
{error, "No such file or directory"} ->
Acc;
@ -274,8 +271,7 @@ fold_objects(FoldObjectsFun, Acc, Opts, #state{table=Table}) ->
{break, AccFinal} ->
AccFinal
after
ok = wterl:cursor_close(Cursor),
ok = wterl:session_close(Session)
ok = wterl:cursor_close(Cursor)
end
end
end,
@ -371,8 +367,8 @@ establish_connection(Table, Config) ->
wterl:config_value(session_max, Config, SessionMax),
wterl:config_value(cache_size, Config, size_cache(RequestedCacheSize)),
wterl:config_value(statistics_log, Config, [{wait, 30}]), % sec
wterl:config_value(verbose, Config, [ "ckpt"
%"block", "shared_cache", "evictserver", "fileops",
wterl:config_value(verbose, Config, [
%"ckpt" "block", "shared_cache", "evictserver", "fileops",
%"hazard", "mutex", "read", "readserver", "reconcile",
%"salvage", "verify", "write", "evict", "lsm"
])