package org.apache.helix.integration;
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import org.apache.helix.TestHelper;
import org.apache.helix.manager.zk.MockParticipant;
import org.apache.helix.manager.zk.MockController;
import org.apache.helix.manager.zk.ZKHelixAdmin;
import org.apache.helix.mock.participant.ErrTransition;
import org.apache.helix.testutil.TestUtil;
import org.apache.helix.testutil.ZkTestBase;
import org.apache.helix.tools.ClusterStateVerifier;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestErrorPartition extends ZkTestBase {
@Test()
public void testErrorPartition() throws Exception {
String clusterName = TestUtil.getTestName();
MockParticipant[] participants = new MockParticipant[5];
System.out.println("START testErrorPartition() at " + new Date(System.currentTimeMillis()));
ZKHelixAdmin tool = new ZKHelixAdmin(_zkclient);
TestHelper.setupCluster(clusterName, _zkaddr, 12918, "localhost", "TestDB", 1, 10, 5, 3,
"MasterSlave", true);
MockController controller =
new MockController(_zkaddr, clusterName, "controller_0");
controller.syncStart();
for (int i = 0; i < 5; i++) {
String instanceName = "localhost_" + (12918 + i);
if (i == 0) {
Map<String, Set<String>> errPartitions = new HashMap<String, Set<String>>();
errPartitions.put("SLAVE-MASTER", TestHelper.setOf("TestDB0_4"));
participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
participants[i].setTransition(new ErrTransition(errPartitions));
} else {
participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
}
participants[i].syncStart();
}
Map<String, Map<String, String>> errStates = new HashMap<String, Map<String, String>>();
errStates.put("TestDB0", new HashMap<String, String>());
errStates.get("TestDB0").put("TestDB0_4", "localhost_12918");
boolean result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
_zkaddr, clusterName, errStates));
Assert.assertTrue(result);
Map<String, Set<String>> errorStateMap = new HashMap<String, Set<String>>();
errorStateMap.put("TestDB0_4", TestHelper.setOf("localhost_12918"));
// verify "TestDB0_0", "localhost_12918" is in ERROR state
TestHelper.verifyState(clusterName, _zkaddr, errorStateMap, "ERROR");
// disable a partition on a node with error state
tool.enablePartition(false, clusterName, "localhost_12918", "TestDB0",
Arrays.asList("TestDB0_4"));
result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
_zkaddr, clusterName, errStates));
Assert.assertTrue(result);
TestHelper.verifyState(clusterName, _zkaddr, errorStateMap, "ERROR");
// disable a node with error state
tool.enableInstance(clusterName, "localhost_12918", false);
result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
_zkaddr, clusterName, errStates));
Assert.assertTrue(result);
// make sure after restart stale ERROR state is gone
tool.enablePartition(true, clusterName, "localhost_12918", "TestDB0",
Arrays.asList("TestDB0_4"));
tool.enableInstance(clusterName, "localhost_12918", true);
participants[0].syncStop();
result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
_zkaddr, clusterName));
Assert.assertTrue(result);
participants[0] = new MockParticipant(_zkaddr, clusterName, "localhost_12918");
new Thread(participants[0]).start();
result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
_zkaddr, clusterName));
Assert.assertTrue(result);
// clean up
controller.syncStop();
for (int i = 0; i < 5; i++) {
participants[i].syncStop();
}
System.out.println("END testErrorPartition() at " + new Date(System.currentTimeMillis()));
}
}