From b490ebc7f6058719bd22c86fd0db95b09dc027d6 Mon Sep 17 00:00:00 2001 From: Alex Auvolat Date: Fri, 28 May 2021 12:36:22 +0200 Subject: Many improvements on ring/replication and its configuration: - Explicit "replication_mode" configuration parameters that takes either "none", "2" or "3" as values, instead of letting user configure replication factor themselves. These are presets whose corresponding replication/quorum values can be found in replication/mode.rs - Explicit support for single-node and two-node deployments (number of nodes must be at least "replication_mode", with "none" we can have only one node) - Ring is now stored much more compactly with 256*8 + n*32 bytes, instead of 256*32 bytes - Support for gateway-only nodes that do not store data (these nodes still need a metadata_directory to store the list of bucket and keys since those are stored on all nodes; it also technically needs a data_directory to start but it will stay empty unless we have bugs) --- src/table/replication/sharded.rs | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'src/table/replication/sharded.rs') diff --git a/src/table/replication/sharded.rs b/src/table/replication/sharded.rs index 93b95a38..8081b892 100644 --- a/src/table/replication/sharded.rs +++ b/src/table/replication/sharded.rs @@ -26,8 +26,8 @@ pub struct TableShardedReplication { impl TableReplication for TableShardedReplication { fn read_nodes(&self, hash: &Hash) -> Vec { - let ring = self.system.ring.borrow().clone(); - ring.walk_ring(&hash, self.replication_factor) + let ring = self.system.ring.borrow(); + ring.get_nodes(&hash, self.replication_factor) } fn read_quorum(&self) -> usize { self.read_quorum @@ -35,7 +35,7 @@ impl TableReplication for TableShardedReplication { fn write_nodes(&self, hash: &Hash) -> Vec { let ring = self.system.ring.borrow(); - ring.walk_ring(&hash, self.replication_factor) + ring.get_nodes(&hash, self.replication_factor) } fn write_quorum(&self) -> usize { self.write_quorum -- cgit v1.2.3