/// <exception cref="System.Exception"/>
public virtual void TestZKSessionTimeout()
{
TestZKRMStateStoreZKClientConnections.TestZKClient zkClientTester = new TestZKRMStateStoreZKClientConnections.TestZKClient
(this);
string path = "/test";
YarnConfiguration conf = new YarnConfiguration();
conf.SetInt(YarnConfiguration.RmZkTimeoutMs, ZkTimeoutMs);
ZKRMStateStore store = (ZKRMStateStore)zkClientTester.GetRMStateStore(conf);
RMStateStoreTestBase.TestDispatcher dispatcher = new RMStateStoreTestBase.TestDispatcher
();
store.SetRMDispatcher(dispatcher);
// a hack to trigger expired event
zkClientTester.forExpire = true;
// trigger watch
store.CreateWithRetries(path, null, ZooDefs.Ids.OpenAclUnsafe, CreateMode.Persistent
);
store.GetDataWithRetries(path, true);
store.SetDataWithRetries(path, Sharpen.Runtime.GetBytesForString("bytes"), 0);
zkClientTester.syncBarrier.Await();
// after this point, expired event has already been processed.
try
{
byte[] ret = store.GetDataWithRetries(path, false);
NUnit.Framework.Assert.AreEqual("bytes", Sharpen.Runtime.GetStringForBytes(ret));
}
catch (Exception e)
{
string error = "New session creation failed";
Log.Error(error, e);
NUnit.Framework.Assert.Fail(error);
}
// send Disconnected event from old client session to ZKRMStateStore
// check the current client session is not affected.
NUnit.Framework.Assert.IsTrue(zkClientTester.oldWatcher != null);
WatchedEvent disconnectedEvent = new WatchedEvent(Watcher.Event.EventType.None, Watcher.Event.KeeperState
.Disconnected, null);
zkClientTester.oldWatcher.Process(disconnectedEvent);
NUnit.Framework.Assert.IsTrue(store.zkClient != null);
zkClientTester.watcher.Process(disconnectedEvent);
NUnit.Framework.Assert.IsTrue(store.zkClient == null);
WatchedEvent connectedEvent = new WatchedEvent(Watcher.Event.EventType.None, Watcher.Event.KeeperState
.SyncConnected, null);
zkClientTester.watcher.Process(connectedEvent);
NUnit.Framework.Assert.IsTrue(store.zkClient != null);
NUnit.Framework.Assert.IsTrue(store.zkClient == store.activeZkClient);
}
/// <exception cref="System.Exception"/>
public virtual void TestZKClientDisconnectAndReconnect()
{
TestZKRMStateStoreZKClientConnections.TestZKClient zkClientTester = new TestZKRMStateStoreZKClientConnections.TestZKClient
(this);
string path = "/test";
YarnConfiguration conf = new YarnConfiguration();
conf.SetInt(YarnConfiguration.RmZkTimeoutMs, ZkTimeoutMs);
ZKRMStateStore store = (ZKRMStateStore)zkClientTester.GetRMStateStore(conf);
RMStateStoreTestBase.TestDispatcher dispatcher = new RMStateStoreTestBase.TestDispatcher
();
store.SetRMDispatcher(dispatcher);
// trigger watch
store.CreateWithRetries(path, null, ZooDefs.Ids.OpenAclUnsafe, CreateMode.Persistent
);
store.GetDataWithRetries(path, true);
store.SetDataWithRetries(path, Sharpen.Runtime.GetBytesForString("newBytes"), 0);
StopServer();
AtomicBoolean isSucceeded = new AtomicBoolean(false);
zkClientTester.watcher.WaitForDisconnected(ZkOpWaitTime);
Sharpen.Thread thread = new _Thread_190(store, path, isSucceeded);
thread.Start();
// ZKRMStateStore Session restored
StartServer();
zkClientTester.watcher.WaitForConnected(ZkOpWaitTime);
byte[] ret = null;
try
{
ret = store.GetDataWithRetries(path, true);
}
catch (Exception e)
{
string error = "ZKRMStateStore Session restore failed";
Log.Error(error, e);
NUnit.Framework.Assert.Fail(error);
}
NUnit.Framework.Assert.AreEqual("newBytes", Sharpen.Runtime.GetStringForBytes(ret
));
thread.Join();
NUnit.Framework.Assert.IsTrue(isSucceeded.Get());
}