This adds some basic plumbing to make remote procedure calls to other cluster
members. This first implementation allows a node to contact the raft leader
and fetch a copy of the meta data. This will be used by non-raft members to
pull down the latest metadata.
With this change, the query engine code gathers information about
shards and tagsets by working with individual shards, collating the
information, and returning that to the client. It does not assume that any
particular shard is local, and accesses all shards through abstracted
Mappers, of which there are two types -- a Mapper type for Raw queries
and a second type for Aggregate queries. There are corresponding
Executors for each type of Mapper, but both types of Executors share the
same interface.
This commit adds a requirement that retention policies must
be fully committed. This means that the replication factor
must be set to whatever the node count is in the cluster.
Fixes#2738
This commit sets a cluster ID when the first node is initialized.
The ID is generated on every CreateNodeCommand so that it can be
applied consistently in the state machine of every server.
This commit adds the meta.RaftStore which can start a single node
cluster and create nodes on the meta.Data internal structure.
Conflicts:
meta/meta.go
Jason Wilder
gunnaraasen
Philip O'Toole
Dejan Golja
Ben Johnson
Philip O'Toole
Paul Dix