package com.linkedin.helix.manager.zk;
import java.util.UUID;
import org.testng.Assert;
import org.testng.annotations.Test;
import com.linkedin.helix.InstanceType;
import com.linkedin.helix.TestHelper;
import com.linkedin.helix.ZkHelixTestManager;
import com.linkedin.helix.ZkTestHelper;
import com.linkedin.helix.integration.ZkIntegrationTestBase;
public class TestZkManagerFlappingDetection extends ZkIntegrationTestBase
{
@Test
public void testDisconnectHistory() throws Exception
{
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
final String clusterName = className + "_" + methodName;
TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
10, // partitions per resource
5, // number of nodes
3, // replicas
"MasterSlave",
true); // do rebalance
String instanceName = "localhost_" + (12918 + 0);
ZkHelixTestManager manager =
new ZkHelixTestManager(clusterName,
instanceName,
InstanceType.PARTICIPANT,
ZK_ADDR);
manager.connect();
ZkClient zkClient = manager.getZkClient();
ZkTestHelper.expireSession(zkClient);
for(int i = 0;i < 4; i++)
{
ZkTestHelper.expireSession(zkClient);
Thread.sleep(1000);
if(i < 5)
{
//System.out.println(i);
Assert.assertTrue(manager.isConnected());
}
}
ZkTestHelper.disconnectSession(zkClient);
for(int i = 0; i < 20; i++)
{
Thread.sleep(500);
System.out.println(i);
if(!manager.isConnected()) break;
}
Assert.assertFalse(manager.isConnected());
}
@Test
public void testDisconnectFlappingWindow() throws Exception
{
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String instanceName = "localhost_" + (12918 + 1);
final String clusterName = className + "_" + methodName + UUID.randomUUID();
testDisconnectFlappingWindow2(instanceName, InstanceType.PARTICIPANT);
testDisconnectFlappingWindow2("admin", InstanceType.ADMINISTRATOR);
}
public void testDisconnectFlappingWindow2(String instanceName, InstanceType type) throws Exception
{
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
final String clusterName = className + "_" + methodName + UUID.randomUUID();
TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
10, // partitions per resource
5, // number of nodes
3, // replicas
"MasterSlave",
true); // do rebalance
// flapping time window to 5 sec
System.setProperty("helixmanager.flappingTimeWindow", "15000");
System.setProperty("helixmanager.maxDisconnectThreshold", "7");
ZkHelixTestManager manager2 =
new ZkHelixTestManager(clusterName,
instanceName,
type,
ZK_ADDR);
manager2.connect();
ZkClient zkClient = manager2.getZkClient();
for(int i = 0;i < 3; i++)
{
ZkTestHelper.expireSession(zkClient);
Thread.sleep(500);
Assert.assertTrue(manager2.isConnected());
}
Thread.sleep(15000);
// Old entries should be cleaned up
for(int i = 0;i < 7; i++)
{
ZkTestHelper.expireSession(zkClient);
Thread.sleep(1000);
Assert.assertTrue(manager2.isConnected());
}
ZkTestHelper.disconnectSession(zkClient);
for(int i = 0; i < 20; i++)
{
Thread.sleep(500);
if(!manager2.isConnected()) break;
}
Assert.assertFalse(manager2.isConnected());
}
//@Test
public void testDisconnectFlappingWindowController() throws Exception
{
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
final String clusterName = className + "_" + methodName;
TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
10, // partitions per resource
5, // number of nodes
3, // replicas
"MasterSlave",
true); // do rebalance
// flapping time window to 5 sec
System.setProperty("helixmanager.flappingTimeWindow", "5000");
System.setProperty("helixmanager.maxDisconnectThreshold", "3");
ZkHelixTestManager manager2 =
new ZkHelixTestManager(clusterName,
null,
InstanceType.CONTROLLER,
ZK_ADDR);
manager2.connect();
Thread.sleep(100);
ZkClient zkClient = manager2.getZkClient();
for(int i = 0;i < 2; i++)
{
ZkTestHelper.expireSession(zkClient);
Thread.sleep(500);
Assert.assertTrue(manager2.isConnected());
}
Thread.sleep(5000);
// Old entries should be cleaned up
for(int i = 0;i < 3; i++)
{
ZkTestHelper.expireSession(zkClient);
Thread.sleep(500);
Assert.assertTrue(manager2.isConnected());
}
ZkTestHelper.disconnectSession(zkClient);
for(int i = 0; i < 20; i++)
{
Thread.sleep(500);
if(!manager2.isConnected()) break;
}
Assert.assertFalse(manager2.isConnected());
}
}