Examples with RaftGroup org.apache.ratis.protocol.RaftGroup used on opensource projects

Example 6 with RaftGroup

use of org.apache.ratis.protocol.RaftGroup in project incubator-ratis by apache.

the class ReinitializationBaseTest method testReinitialize.

@Test
public void testReinitialize() throws Exception {
    final MiniRaftCluster cluster = getCluster(0);
    LOG.info("Start testReinitialize" + cluster.printServers());
    // Start server with an empty conf
    final RaftGroupId groupId = RaftGroupId.randomId();
    final RaftGroup group = new RaftGroup(groupId);
    final List<RaftPeerId> ids = Arrays.stream(MiniRaftCluster.generateIds(3, 0)).map(RaftPeerId::valueOf).collect(Collectors.toList());
    ids.forEach(id -> cluster.putNewServer(id, group, true));
    LOG.info("putNewServer: " + cluster.printServers());
    cluster.start();
    LOG.info("start: " + cluster.printServers());
    // Make sure that there are no leaders.
    TimeUnit.SECONDS.sleep(1);
    Assert.assertNull(cluster.getLeader());
    // Reinitialize servers
    final RaftGroup newGroup = new RaftGroup(groupId, cluster.getPeers());
    final RaftClient client = cluster.createClient(newGroup);
    for (RaftPeer p : newGroup.getPeers()) {
        client.reinitialize(newGroup, p.getId());
    }
    Assert.assertNotNull(RaftTestUtil.waitForLeader(cluster, true));
    cluster.shutdown();
}

Example 7 with RaftGroup

use of org.apache.ratis.protocol.RaftGroup in project alluxio by Alluxio.

the class RaftJournalSystem method getCurrentGroup.

/**
 * @return current raft group
 */
@VisibleForTesting
public synchronized RaftGroup getCurrentGroup() {
    try {
        Iterator<RaftGroup> groupIter = mServer.getGroups().iterator();
        Preconditions.checkState(groupIter.hasNext(), "no group info found");
        RaftGroup group = groupIter.next();
        Preconditions.checkState(group.getGroupId() == RAFT_GROUP_ID, String.format("Invalid group id %s, expecting %s", group.getGroupId(), RAFT_GROUP_ID));
        return group;
    } catch (IOException | IllegalStateException e) {
        LogUtils.warnWithException(LOG, "Failed to get raft group, falling back to initial group", e);
        return mRaftGroup;
    }
}