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Allow manifest entry to be selected from level 2

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martinsumner 2017-03-08 12:09:10 +00:00
parent 3c5740e7bf
commit 90b587b083
1 changed files with 17 additions and 1 deletions
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18
src/leveled_pmanifest.erl
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@ -256,8 +256,12 @@ merge_lookup(Manifest, LevelIdx, StartKey, EndKey) ->
%% genuinely better - eventually every file has to be compacted.
%%
%% Hence, the initial implementation is to select files to merge at random
mergefile_selector(Manifest, LevelIdx) ->
mergefile_selector(Manifest, LevelIdx) when LevelIdx =< 1 ->
Level = array:get(LevelIdx, Manifest#manifest.levels),
lists:nth(random:uniform(length(Level)), Level);
mergefile_selector(Manifest, LevelIdx) ->
Level = leveled_tree:to_list(array:get(LevelIdx,
Manifest#manifest.levels)),
lists:nth(random:uniform(length(Level)), Level).
add_snapshot(Manifest, Pid, Timeout) ->
@ -709,6 +713,18 @@ changeup_setup(Man6) ->
{Man7, Man8, Man9, Man10, Man11, Man12, Man13}.
random_select_test() ->
ManTuple = initial_setup(),
LastManifest = element(7, ManTuple),
L1File = mergefile_selector(LastManifest, 1),
% This blows up if the function is not prepared for the different format
% https://github.com/martinsumner/leveled/issues/43
L2File = mergefile_selector(LastManifest, 2),
Level1 = array:get(1, LastManifest#manifest.levels),
Level2 = leveled_tree:to_list(array:get(2, LastManifest#manifest.levels)),
?assertMatch(true, lists:member(L1File, Level1)),
?assertMatch(true, lists:member(L2File, Level2)).
keylookup_manifest_test() ->
{Man0, Man1, Man2, Man3, _Man4, _Man5, Man6} = initial_setup(),
LK1_1 = {o, "Bucket1", "K711", null},