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This commit is contained in:
Martin Sumner 2019-08-22 16:45:03 +01:00
parent bd8a8a6739
commit be0662020c
1 changed files with 3 additions and 18 deletions
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21
tests/verify_tictacaae_nodedown.erl
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@ -17,24 +17,9 @@
%% under the License. %% under the License.
%% %%
%% ------------------------------------------------------------------- %% -------------------------------------------------------------------
%% @doc Verification of Active Anti Entropy. %% @doc Verification of Active Anti Entropy during node down - with or without
%% The basic guarantee of AAE is this: Even without the read repairs that will %% configuration to run AAE only between primary vnodes.
%% happen when data is accessed, inconsistencies between the replicas of a
%% KV object will be repaired eventually. The test tries hard not to
%% explicitly check for when the AAE trees are built or when exchanges are run
%% in an effort to remain decoupled from the implementation. Instead, it
%% simply configures AAE to build/rebuild and run exchanges between the data
%% partitions. It then performs direct vnode reads on all replicas and verify
%% they eventually match.
%%
%% Data recovery after the following scenarios is tested:
%%
%% - Data for a partition completely disappears.
%% - Less than N replicas are written
%% - Less than N replicas are updated
%%
%% Also, a sanity check is done to make sure AAE repairs go away eventually
%% if there is no activity. That was an actual early AAE bug.
-module(verify_tictacaae_nodedown). -module(verify_tictacaae_nodedown).
-export([confirm/0]). -export([confirm/0]).