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| author | jiangph <jiangph@cn.ibm.com> | 2020-03-23 20:03:43 +0800 |
|---|---|---|
| committer | jiangph <jiangph@cn.ibm.com> | 2020-03-24 14:10:31 +0800 |
| commit | 2c704acc78c4f9f7cf8bb40420be5b8c915d39b9 (patch) | |
| tree | a7270b28c8d68a9adf1d05e586984be2ad7429d6 | |
| parent | f81f117033422c463d6230569973c9c70a1d2565 (diff) | |
| download | couchdb-2c704acc78c4f9f7cf8bb40420be5b8c915d39b9.tar.gz | |
set DbPrefix with value allocated with erlfdb_hca
Previously we are using the DbName to set DbPrefix for clarity. In order
to support soft-deletion while providing efficient value for DbPrefix
allocation, we use value allocated with erlfdb_hca for DbPrefix.
| -rw-r--r-- | src/fabric/include/fabric2.hrl | 1 | ||||
| -rw-r--r-- | src/fabric/src/fabric2_fdb.erl | 6 |
2 files changed, 4 insertions, 3 deletions
diff --git a/src/fabric/include/fabric2.hrl b/src/fabric/include/fabric2.hrl index a4f68bdf6..0c0757567 100644 --- a/src/fabric/include/fabric2.hrl +++ b/src/fabric/include/fabric2.hrl @@ -21,6 +21,7 @@ -define(CLUSTER_CONFIG, 0). -define(ALL_DBS, 1). +-define(DB_HCA, 2). -define(DBS, 15). -define(TX_IDS, 255). diff --git a/src/fabric/src/fabric2_fdb.erl b/src/fabric/src/fabric2_fdb.erl index f5f7bec83..14a649d50 100644 --- a/src/fabric/src/fabric2_fdb.erl +++ b/src/fabric/src/fabric2_fdb.erl @@ -177,10 +177,10 @@ create(#{} = Db0, Options) -> layer_prefix := LayerPrefix } = Db = ensure_current(Db0, false), - % Eventually DbPrefix will be HCA allocated. For now - % we're just using the DbName so that debugging is easier. DbKey = erlfdb_tuple:pack({?ALL_DBS, DbName}, LayerPrefix), - DbPrefix = erlfdb_tuple:pack({?DBS, DbName}, LayerPrefix), + HCA = erlfdb_hca:create(erlfdb_tuple:pack({?DB_HCA}, LayerPrefix)), + AllocPrefix = erlfdb_hca:allocate(HCA, Tx), + DbPrefix = erlfdb_tuple:pack({?DBS, AllocPrefix}, LayerPrefix), erlfdb:set(Tx, DbKey, DbPrefix), % This key is responsible for telling us when something in |