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author | Eric Avdey <eiri@eiri.ca> | 2016-11-24 14:00:17 -0400 |
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committer | Eric Avdey <eiri@eiri.ca> | 2016-11-24 14:00:17 -0400 |
commit | c3c5429180de14a2b139f7741c934143ef73988c (patch) | |
tree | 567dec1b0f2135b1b8ae662f9aba3a343496bce7 | |
parent | 252467cb4a27637090b5f9006483f5b7ab551699 (diff) | |
parent | c4da61c8eb98cedd3cf7a28c293cb1f6d3ec8571 (diff) | |
download | couchdb-c3c5429180de14a2b139f7741c934143ef73988c.tar.gz |
Merge remote branch 'cloudant:79066-port-chunkified-replicate_batch'
This closes #26
Signed-off-by: Eric Avdey <eiri@eiri.ca>
-rw-r--r-- | src/mem3_rep.erl | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/src/mem3_rep.erl b/src/mem3_rep.erl index 938260da6..ad7ac55f5 100644 --- a/src/mem3_rep.erl +++ b/src/mem3_rep.erl @@ -252,8 +252,10 @@ replicate_batch(#acc{target = #shard{node=Node, name=Name}} = Acc) -> [] -> ok; Missing -> - Docs = open_docs(Acc, Missing), - ok = save_on_target(Node, Name, Docs) + lists:map(fun(Chunk) -> + Docs = open_docs(Acc, Chunk), + ok = save_on_target(Node, Name, Docs) + end, chunk_revs(Missing)) end, update_locals(Acc), {ok, Acc#acc{revcount=0, infos=[]}}. @@ -271,6 +273,32 @@ find_missing_revs(Acc) -> ]). +chunk_revs(Revs) -> + Limit = list_to_integer(config:get("mem3", "rev_chunk_size", "5000")), + chunk_revs(Revs, Limit). + +chunk_revs(Revs, Limit) -> + chunk_revs(Revs, {0, []}, [], Limit). + +chunk_revs([], {_Count, Chunk}, Chunks, _Limit) -> + [Chunk|Chunks]; +chunk_revs([{Id, R, A}|Revs], {Count, Chunk}, Chunks, Limit) when length(R) =< Limit - Count -> + chunk_revs( + Revs, + {Count + length(R), [{Id, R, A}|Chunk]}, + Chunks, + Limit + ); +chunk_revs([{Id, R, A}|Revs], {Count, Chunk}, Chunks, Limit) -> + {This, Next} = lists:split(Limit - Count, R), + chunk_revs( + [{Id, Next, A}|Revs], + {0, []}, + [[{Id, This, A}|Chunk]|Chunks], + Limit + ). + + open_docs(#acc{source=Source, infos=Infos}, Missing) -> lists:flatmap(fun({Id, Revs, _}) -> FDI = lists:keyfind(Id, #full_doc_info.id, Infos), |