diff options
| -rw-r--r-- | src/model/block.rs | 3 | ||||
| -rw-r--r-- | src/table/replication/fullcopy.rs | 7 | ||||
| -rw-r--r-- | src/table/sync.rs | 3 |
3 files changed, 12 insertions, 1 deletions
diff --git a/src/model/block.rs b/src/model/block.rs index 987ec9e4..a3bbe43d 100644 --- a/src/model/block.rs +++ b/src/model/block.rs @@ -305,6 +305,9 @@ impl BlockManager { let ring = self.system.ring.borrow().clone(); let mut who = self.replication.replication_nodes(&hash, &ring); + if who.len() < self.replication.write_quorum(&self.system) { + return Err(Error::Message(format!("Not trying to offload block because we don't have a quorum of nodes to write to"))); + } who.retain(|id| *id != self.system.id); let msg = Arc::new(Message::NeedBlockQuery(*hash)); diff --git a/src/table/replication/fullcopy.rs b/src/table/replication/fullcopy.rs index a20f20b7..a5faece9 100644 --- a/src/table/replication/fullcopy.rs +++ b/src/table/replication/fullcopy.rs @@ -41,7 +41,12 @@ impl TableReplication for TableFullReplication { self.replication_nodes(hash, system.ring.borrow().as_ref()) } fn write_quorum(&self, system: &System) -> usize { - system.ring.borrow().config.members.len() - self.max_faults + let nmembers = system.ring.borrow().config.members.len(); + if nmembers > self.max_faults { + nmembers - self.max_faults + } else { + 1 + } } fn max_write_errors(&self) -> usize { self.max_faults diff --git a/src/table/sync.rs b/src/table/sync.rs index b5044a4e..f8ebb2f0 100644 --- a/src/table/sync.rs +++ b/src/table/sync.rs @@ -277,6 +277,9 @@ where warn!("Interrupting offload as partitions seem to have changed"); break; } + if nodes.len() < self.aux.replication.write_quorum(&self.aux.system) { + return Err(Error::Message(format!("Not offloading as we don't have a quorum of nodes to write to."))); + } counter += 1; debug!( |