ObserverLETest.java
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.zookeeper.test;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.util.Arrays;
import org.apache.zookeeper.ZKTestCase;
import org.apache.zookeeper.server.quorum.QuorumPeer;
import org.apache.zookeeper.server.quorum.QuorumStats;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
public class ObserverLETest extends ZKTestCase {
final QuorumBase qb = new QuorumBase();
final ClientTest ct = new ClientTest();
@BeforeEach
public void establishThreeParticipantOneObserverEnsemble() throws Exception {
qb.setUp(true, false);
ct.hostPort = qb.hostPort;
ct.setUpAll();
qb.s5.shutdown();
}
@AfterEach
public void shutdownQuorum() throws Exception {
ct.tearDownAll();
qb.tearDown();
}
/**
* See ZOOKEEPER-1294. Confirms that an observer will not support the quorum
* of a leader by forming a 5-node, 2-observer ensemble (so quorum size is 2).
* When all but the leader and one observer are shut down, the leader should
* enter the 'looking' state, not stay in the 'leading' state.
*/
@Test
public void testLEWithObserver() throws Exception {
QuorumPeer leader = null;
for (QuorumPeer server : Arrays.asList(qb.s1, qb.s2, qb.s3)) {
if (server.getServerState().equals(QuorumStats.Provider.FOLLOWING_STATE)) {
server.shutdown();
assertTrue(ClientBase.waitForServerDown("127.0.0.1:" + server.getClientPort(), ClientBase.CONNECTION_TIMEOUT),
"Waiting for server down");
} else {
assertNull(leader, "More than one leader found");
leader = server;
}
}
assertTrue(ClientBase.waitForServerState(leader, ClientBase.CONNECTION_TIMEOUT, QuorumStats.Provider.LOOKING_STATE),
"Leader is not in Looking state");
}
}