modules/raft/src/integrationTest/java/org/apache/ignite/raft/jraft/core/ItNodeTest.java [1991:2027]:
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        List<TestPeer> peers = TestUtils.generatePeers(testInfo, 4);
        cluster = new TestCluster("unitest", dataPath, peers.subList(0, 3), testInfo);
        for (int i = 0; i < peers.size() - 1; i++) {
            TestPeer peer = peers.get(i);
            boolean started = cluster.start(peer, false, 200, false);
            assertTrue(started);
        }
        // get leader
        Node leader = cluster.waitAndGetLeader();
        assertNotNull(leader);
        cluster.ensureLeader(leader);

        // apply tasks to leader
        sendTestTaskAndWait(leader, 0, RaftError.SUCCESS);

        cluster.ensureSame();

        // apply something more
        for (int i = 1; i < 100; i++)
            sendTestTaskAndWait(leader, i * 10, RaftError.SUCCESS);

        Thread.sleep(1000);

        // trigger leader snapshot
        triggerLeaderSnapshot(cluster, leader);

        // apply something more
        for (int i = 100; i < 200; i++)
            sendTestTaskAndWait(leader, i * 10, RaftError.SUCCESS);
        // trigger leader snapshot
        triggerLeaderSnapshot(cluster, leader, 2);

        // wait leader to compact logs
        Thread.sleep(1000);

        // add follower
        TestPeer newPeer = peers.get(3);
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modules/raft/src/integrationTest/java/org/apache/ignite/raft/jraft/core/ItNodeTest.java [2048:2084]:
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        List<TestPeer> peers = TestUtils.generatePeers(testInfo, 4);
        cluster = new TestCluster("unitest", dataPath, peers.subList(0, 3), testInfo);
        for (int i = 0; i < peers.size() - 1; i++) {
            TestPeer peer = peers.get(i);
            boolean started = cluster.start(peer, false, 200, false);
            assertTrue(started);
        }
        // get leader
        Node leader = cluster.waitAndGetLeader();
        assertNotNull(leader);
        cluster.ensureLeader(leader);

        // apply tasks to leader
        sendTestTaskAndWait(leader, 0, RaftError.SUCCESS);

        cluster.ensureSame();

        // apply something more
        for (int i = 1; i < 100; i++)
            sendTestTaskAndWait(leader, i * 10, RaftError.SUCCESS);

        Thread.sleep(1000);

        // trigger leader snapshot
        triggerLeaderSnapshot(cluster, leader);

        // apply something more
        for (int i = 100; i < 200; i++)
            sendTestTaskAndWait(leader, i * 10, RaftError.SUCCESS);
        // trigger leader snapshot
        triggerLeaderSnapshot(cluster, leader, 2);

        // wait leader to compact logs
        Thread.sleep(1000);

        // add follower
        TestPeer newPeer = peers.get(3);
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