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fix: Fix cleanup for locked snapshots

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This commit is contained in:
Yaroslav Rogov 2021-06-22 16:21:41 +03:00
parent f852c7595c
commit c3a843887b
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GPG Key ID: 5159F2A85653816B
1 changed files with 7 additions and 1 deletions
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8
src/dmt_client_cache.erl
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@ -526,7 +526,11 @@ cleanup(Snaps, HeadVersion) ->
case Elements > MaxElements orelse (Elements > 1 andalso Memory > MaxMemory) of
true ->
Tail = remove_earliest(Snaps, HeadVersion),
cleanup(Tail, HeadVersion);
%% It's possible that all snaps are locked by users: try later
case Snaps == Tail of
true -> ok;
false -> cleanup(Tail, HeadVersion)
end;
false ->
ok
end.
@ -554,6 +558,8 @@ ets_memory(TID) ->
proplists:get_value(memory, Info).
-spec remove_earliest([snap()], dmt_client:vsn()) -> [snap()].
remove_earliest([], _HeadVersion) ->
[];
remove_earliest([#snap{vsn = HeadVersion} | Tail], HeadVersion) ->
Tail;
remove_earliest([Snap = #snap{vsn = Version, cached_at = StoredAt} | Tail], HeadVersion) ->