Examples with ApplyRaftRunnable com.hazelcast.cp.internal.raft.impl.dataservice.ApplyRaftRunnable used on opensource projects

Example 1 with ApplyRaftRunnable

use of com.hazelcast.cp.internal.raft.impl.dataservice.ApplyRaftRunnable in project hazelcast by hazelcast.

the class LocalRaftTest method testNoCommitWhenOnlyLeaderAppends.

private void testNoCommitWhenOnlyLeaderAppends(int nodeCount) throws InterruptedException, ExecutionException {
    group = newGroup(nodeCount);
    group.start();
    RaftNodeImpl leader = group.waitUntilLeaderElected();
    group.dropMessagesToAll(leader.getLocalMember(), AppendRequest.class);
    try {
        leader.replicate(new ApplyRaftRunnable("val")).get(10, TimeUnit.SECONDS);
        fail();
    } catch (TimeoutException ignored) {
    }
    for (RaftNodeImpl raftNode : group.getNodes()) {
        assertEquals(0, getCommitIndex(raftNode));
        RaftDataService service = group.getIntegration(raftNode.getLocalMember()).getService();
        assertEquals(0, service.size());
    }
}

Example 2 with ApplyRaftRunnable

use of com.hazelcast.cp.internal.raft.impl.dataservice.ApplyRaftRunnable in project hazelcast by hazelcast.

the class LocalRaftTest method when_leaderTerminatesInMinority_then_clusterRemainsAvailable.

@Test
public void when_leaderTerminatesInMinority_then_clusterRemainsAvailable() throws Exception {
    group = newGroup(3);
    group.start();
    RaftNodeImpl leaderNode = group.waitUntilLeaderElected();
    RaftNodeImpl[] followers = group.getNodesExcept(leaderNode.getLocalMember());
    int leaderTerm = getTerm(leaderNode);
    group.terminateNode(leaderNode.getLocalMember());
    assertTrueEventually(() -> {
        for (RaftNodeImpl raftNode : followers) {
            RaftEndpoint newLeader = getLeaderMember(raftNode);
            assertNotNull(newLeader);
            assertNotEquals(leaderNode.getLocalMember(), newLeader);
        }
    });
    RaftNodeImpl newLeader = group.waitUntilLeaderElected();
    assertTrue(getTerm(newLeader) > leaderTerm);
    String value = "value";
    Future future = newLeader.replicate(new ApplyRaftRunnable(value));
    assertEquals(value, future.get());
}

Example 3 with ApplyRaftRunnable

use of com.hazelcast.cp.internal.raft.impl.dataservice.ApplyRaftRunnable in project hazelcast by hazelcast.

the class LocalRaftTest method when_followerTerminatesInMinority_then_clusterRemainsAvailable.

@Test
public void when_followerTerminatesInMinority_then_clusterRemainsAvailable() throws Exception {
    group = newGroup(3);
    group.start();
    RaftNodeImpl leaderNode = group.waitUntilLeaderElected();
    int leaderIndex = group.getLeaderIndex();
    for (int i = 0; i < group.size(); i++) {
        if (i != leaderIndex) {
            group.terminateNode(i);
            break;
        }
    }
    String value = "value";
    Future future = leaderNode.replicate(new ApplyRaftRunnable(value));
    assertEquals(value, future.get());
}

Example 4 with ApplyRaftRunnable

use of com.hazelcast.cp.internal.raft.impl.dataservice.ApplyRaftRunnable in project hazelcast by hazelcast.

the class LocalRaftTest method when_followerBecomesLeaderWithUncommittedEntries_then_thoseEntriesAreCommittedWithANewEntryOfCurrentTerm.

@Test
public void when_followerBecomesLeaderWithUncommittedEntries_then_thoseEntriesAreCommittedWithANewEntryOfCurrentTerm() throws Exception {
    group = newGroup(3);
    group.start();
    RaftNodeImpl leader = group.waitUntilLeaderElected();
    leader.replicate(new ApplyRaftRunnable("val1")).get();
    RaftNodeImpl[] followers = group.getNodesExcept(leader.getLocalMember());
    RaftNodeImpl nextLeader = followers[0];
    long commitIndex = getCommitIndex(leader);
    assertTrueEventually(() -> {
        for (RaftNodeImpl raftNode : group.getNodes()) {
            assertEquals(commitIndex, getCommitIndex(raftNode));
        }
    });
    group.dropMessagesToMember(leader.getLocalMember(), followers[1].getLocalMember(), AppendRequest.class);
    group.dropMessagesToMember(nextLeader.getLocalMember(), leader.getLocalMember(), AppendSuccessResponse.class);
    leader.replicate(new ApplyRaftRunnable("val2"));
    assertTrueEventually(() -> assertTrue(getLastLogOrSnapshotEntry(nextLeader).index() > commitIndex));
    assertTrueAllTheTime(() -> {
        for (RaftNodeImpl raftNode : group.getNodes()) {
            assertEquals(commitIndex, getCommitIndex(raftNode));
        }
    }, 10);
    group.terminateNode(leader.getLocalMember());
    assertTrueEventually(() -> {
        for (RaftNodeImpl raftNode : followers) {
            assertEquals(nextLeader.getLocalMember(), getLeaderMember(raftNode));
        }
    });
    nextLeader.replicate(new ApplyRaftRunnable("val3"));
    assertTrueEventually(() -> {
        for (RaftNodeImpl raftNode : followers) {
            assertEquals(3, getCommitIndex(raftNode));
            assertEquals(3, getLastLogOrSnapshotEntry(raftNode).index());
            RaftDataService service = group.getService(raftNode);
            assertEquals(3, service.size());
            assertEquals("val1", service.get(1));
            assertEquals("val2", service.get(2));
            assertEquals("val3", service.get(3));
        }
    });
}

Example 5 with ApplyRaftRunnable

use of com.hazelcast.cp.internal.raft.impl.dataservice.ApplyRaftRunnable in project hazelcast by hazelcast.

the class PersistenceTest method when_followerIsRestarted_then_itAppliesPreviouslyCommittedMemberList.

@Test
public void when_followerIsRestarted_then_itAppliesPreviouslyCommittedMemberList() throws ExecutionException, InterruptedException {
    RaftAlgorithmConfig config = new RaftAlgorithmConfig().setLeaderHeartbeatPeriodInMillis(SECONDS.toMillis(30));
    group = new LocalRaftGroupBuilder(3, config).setAppendNopEntryOnLeaderElection(true).setRaftStateStoreFactory(RAFT_STATE_STORE_FACTORY).build();
    group.start();
    final RaftNodeImpl leader = group.waitUntilLeaderElected();
    RaftNodeImpl[] followers = group.getNodesExcept(leader.getLocalMember());
    RaftNodeImpl removedFollower = followers[0];
    RaftNodeImpl terminatedFollower = followers[1];
    group.terminateNode(removedFollower.getLocalMember());
    leader.replicate(new ApplyRaftRunnable("val")).get();
    leader.replicateMembershipChange(removedFollower.getLocalMember(), REMOVE).get();
    RaftEndpoint terminatedEndpoint = terminatedFollower.getLocalMember();
    InMemoryRaftStateStore stateStore = getRaftStateStore(terminatedFollower);
    RestoredRaftState terminatedState = stateStore.toRestoredRaftState();
    group.terminateNode(terminatedEndpoint);
    final RaftNodeImpl restartedNode = group.createNewRaftNode(terminatedState, stateStore);
    assertTrueEventually(() -> {
        assertEquals(getCommitIndex(leader), getCommitIndex(restartedNode));
        assertEquals(getLastApplied(leader), getLastApplied(restartedNode));
        assertEquals(new ArrayList<>(getCommittedGroupMembers(leader).members()), new ArrayList<>(getCommittedGroupMembers(restartedNode).members()));
        assertEquals(new ArrayList<>(getLastGroupMembers(leader).members()), new ArrayList<>(getLastGroupMembers(restartedNode).members()));
    });
}