package com.linkedin.helix.integration;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import org.testng.Assert;
import org.testng.annotations.Test;
import com.linkedin.helix.TestHelper;
import com.linkedin.helix.ZNRecord;
import com.linkedin.helix.PropertyKey.Builder;
import com.linkedin.helix.manager.zk.ZKHelixDataAccessor;
import com.linkedin.helix.manager.zk.ZkBaseDataAccessor;
import com.linkedin.helix.mock.controller.ClusterController;
import com.linkedin.helix.mock.storage.MockParticipant;
import com.linkedin.helix.mock.storage.MockParticipant.ErrTransition;
import com.linkedin.helix.model.ExternalView;
import com.linkedin.helix.tools.ClusterSetup;
import com.linkedin.helix.tools.ClusterStateVerifier;
import com.linkedin.helix.tools.ClusterStateVerifier.BestPossAndExtViewZkVerifier;
public class TestDrop extends ZkIntegrationTestBase
{
@Test
public void testDropErrorPartition() throws Exception
{
// Logger.getRootLogger().setLevel(Level.INFO);
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
final int n = 5;
System.out.println("START " + clusterName + " at "
+ new Date(System.currentTimeMillis()));
MockParticipant[] participants = new MockParticipant[n];
TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
10, // partitions per resource
n, // number of nodes
3, // replicas
"MasterSlave",
true); // do rebalance
// start controller
ClusterController controller =
new ClusterController(clusterName, "controller_0", ZK_ADDR);
controller.syncStart();
// start participants
Map<String, Set<String>> errTransitions = new HashMap<String, Set<String>>();
errTransitions.put("SLAVE-MASTER", TestHelper.setOf("TestDB0_4"));
errTransitions.put("OFFLINE-SLAVE", TestHelper.setOf("TestDB0_8"));
for (int i = 0; i < n; i++)
{
String instanceName = "localhost_" + (12918 + i);
if (i == 0)
{
participants[i] =
new MockParticipant(clusterName,
instanceName,
ZK_ADDR,
new ErrTransition(errTransitions));
}
else
{
participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
}
participants[i].syncStart();
}
Map<String, Map<String, String>> errStateMap =
new HashMap<String, Map<String, String>>();
errStateMap.put("TestDB0", new HashMap<String, String>());
errStateMap.get("TestDB0").put("TestDB0_4", "localhost_12918");
errStateMap.get("TestDB0").put("TestDB0_8", "localhost_12918");
boolean result =
ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
clusterName,
errStateMap));
Assert.assertTrue(result);
// drop resource containing error partitions should not change partitions in error state
ClusterSetup.processCommandLineArgs(new String[]{"--zkSvr", ZK_ADDR, "--dropResource", clusterName, "TestDB0"});
// make sure TestDB0_4 and TestDB0_8 partitions stay in ERROR state
result =
ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
clusterName,
errStateMap));
Assert.assertTrue(result);
// clean up
// wait for all zk callbacks done
Thread.sleep(1000);
controller.syncStop();
for (int i = 0; i < 5; i++)
{
participants[i].syncStop();
}
System.out.println("END " + clusterName + " at "
+ new Date(System.currentTimeMillis()));
}
@Test
public void testDropSchemataResource() throws Exception
{
// Logger.getRootLogger().setLevel(Level.INFO);
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
final int n = 5;
System.out.println("START " + clusterName + " at "
+ new Date(System.currentTimeMillis()));
MockParticipant[] participants = new MockParticipant[n];
TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
8, // partitions per resource
n, // number of nodes
3, // replicas
"MasterSlave",
true); // do rebalance
// start controller
ClusterController controller =
new ClusterController(clusterName, "controller_0", ZK_ADDR);
controller.syncStart();
// start participants
for (int i = 0; i < n; i++)
{
String instanceName = "localhost_" + (12918 + i);
participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
participants[i].syncStart();
}
boolean result =
ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
clusterName));
Assert.assertTrue(result);
// add schemata resource group
String command = "--zkSvr " + ZK_ADDR +" --addResource " + clusterName +
" schemata 1 STORAGE_DEFAULT_SM_SCHEMATA";
ClusterSetup.processCommandLineArgs(command.split("\\s+"));
command = "--zkSvr " + ZK_ADDR +" --rebalance " + clusterName +
" schemata 1";
ClusterSetup.processCommandLineArgs(command.split("\\s+"));
result =
ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
clusterName));
Assert.assertTrue(result);
// drop schemata resource group
System.out.println("Dropping schemata resource group...");
command = "--zkSvr " + ZK_ADDR +" --dropResource " + clusterName +
" schemata";
ClusterSetup.processCommandLineArgs(command.split("\\s+"));
result =
ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
clusterName));
Assert.assertTrue(result);
// make sure schemata external view is empty
ZkBaseDataAccessor<ZNRecord> baseAccessor =
new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
Builder keyBuilder = accessor.keyBuilder();
ExternalView extView = accessor.getProperty(keyBuilder.externalView("schemata"));
Assert.assertEquals(extView.getPartitionSet().size(), 0, "schemata externalView should be empty but was \"" + extView + "\"");
// clean up
// wait for all zk callbacks done
Thread.sleep(1000);
controller.syncStop();
for (int i = 0; i < 5; i++)
{
participants[i].syncStop();
}
System.out.println("END " + clusterName + " at "
+ new Date(System.currentTimeMillis()));
}
}