public void ShouldDownUnreachableMembersInMajorityPartitionsConsideringRole()
{
string roleName = "SomeRole";
var roles = new string[] { roleName }.ToImmutableHashSet();
var membersInRole = TestUtils.CreateMembers(MemberStatus.Up, roles).Take(3).ToList();
var unreachableMembersInRole = membersInRole.Take(1).ToImmutableHashSet();
var members = TestUtils.CreateMembers(MemberStatus.Up)
.Take(4)
.Concat(membersInRole)
.ToImmutableSortedSet();
var clusterState =
new CurrentClusterState().Copy(members: members, unreachable: unreachableMembersInRole);
var strategy = new KeepMajorityDowningStrategy(roleName);
var victims = strategy.GetVictims(clusterState).ToList();
victims.ToImmutableHashSet().SetEquals(unreachableMembersInRole)
.Should().BeTrue("Unreachable members in majority should be marked for downing");
victims.All(v => v.HasRole(roleName))
.Should().BeTrue("We should only down members in the specified role");
}
public void ShouldParseConfig()
{
var config = ConfigurationFactory.ParseString("akka.cluster.split-brain-resolver.keep-majority.role = \"test\"");
var strategy = new KeepMajorityDowningStrategy(config);
strategy.Role.Should().Be("test");
}
public void ShouldNotDownPartitionWithOldestWhenEqualMembers()
{
var oldest = TestUtils.CreateMembers(MemberStatus.Up).First();
//Oldest is in the reachable members
var members = TestUtils.CreateMembers(MemberStatus.Up)
.Take(5)
.ToImmutableSortedSet()
.Add(oldest);
var unreachableMembers = members
.Where(m => !m.Equals(oldest))
.Take(3)
.ToImmutableHashSet();
var clusterState =
new CurrentClusterState().Copy(members: members, unreachable: unreachableMembers);
var strategy = new KeepMajorityDowningStrategy();
var victims = strategy.GetVictims(clusterState).ToList();
victims.ToImmutableSortedSet().SetEquals(unreachableMembers)
.Should().BeTrue("Partition with oldest should not be marked for downing");
}
public void ShouldDownMinorityPartitions()
{
var strategy = new KeepMajorityDowningStrategy();
var members = TestUtils.CreateMembers(MemberStatus.Up).Take(5).ToImmutableSortedSet();
var unreachableMembers = members.Take(3).ToImmutableHashSet();
var clusterState =
new CurrentClusterState()
.Copy(members: members, unreachable: unreachableMembers);
var victims = strategy.GetVictims(clusterState).ToList();
victims.ToImmutableHashSet().SetEquals(members)
.Should().BeTrue("Minority partitions should be marked for downing");
}
