Commit Graph

8 Commits

Author SHA1 Message Date
Ivan Paljak
00506b9962 Fix bug in leader election (missing HB)
Reviewers: msantl

Reviewed By: msantl

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D1767
2018-12-11 15:43:24 +01:00
Matija Santl
8e35d8afdc Add Start/Stop methods to RaftServer
Summary:
Explicitly start and stop raft server.
This way we can be sure that raft won't try to use coordination after it's
shutdown, and we can define the start of th raft protocol easier.

Reviewers: ipaljak

Reviewed By: ipaljak

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D1766
2018-12-11 14:24:04 +01:00
Ivan Paljak
8e796e9fd1 Fix infinite wait in leader election.
Reviewers: msantl

Reviewed By: msantl

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D1763
2018-12-11 10:35:35 +01:00
Matija Santl
f501980973 Wire raft into memgraph pt.1.
Summary:
This is just the first diff that tries to wire the raft protocol into
memgraph.

In this diff I'm introducing transaction engine reset functionality. I also
introduced `RaftInterface` which should be used wherever someone wants to access
Raft from Memgraph.

For design decisions see the feature spec.

Reviewers: ipaljak, teon.banek

Reviewed By: ipaljak

Subscribers: pullbot, teon.banek

Differential Revision: https://phabricator.memgraph.io/D1758
2018-12-10 17:08:36 +01:00
Ivan Paljak
d637629078 Implement Raft RPC, log serialization for disk storage and leader election
Summary: This diff contains a rough implementation of the Raft protocol which ends at leader election.

Reviewers: msantl

Reviewed By: msantl

Subscribers: teon.banek, pullbot

Differential Revision: https://phabricator.memgraph.io/D1744
2018-12-10 12:49:22 +01:00
Matija Santl
b647e3f8b8 Prepare memgraph for HA
Summary:
Removed WAL and WAL recovery from single node ha binary.
Added `LogEntryBuffer` in `RaftServer`.

Reviewers: ipaljak, teon.banek

Reviewed By: ipaljak, teon.banek

Subscribers: teon.banek, pullbot

Differential Revision: https://phabricator.memgraph.io/D1739
2018-11-22 15:07:39 +01:00
Matija Santl
dd6fe013dc Parse raft config
Summary:
Added command line parameters to specify rpc flags, raft and
coordination config files and current server id.

Reviewers: ipaljak, teon.banek

Reviewed By: ipaljak, teon.banek

Subscribers: pullbot, teon.banek

Differential Revision: https://phabricator.memgraph.io/D1742
2018-11-21 17:34:13 +01:00
Ivan Paljak
73da1e4463 Add Raft skeleton
Reviewers: msantl

Reviewed By: msantl

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D1732
2018-11-19 13:21:58 +01:00