/// <summary>Expire the ZK session of the given service.</summary>
/// <remarks>
/// Expire the ZK session of the given service. This requires
/// (and asserts) that the given service be the current active.
/// </remarks>
/// <exception cref="Org.Apache.Zookeeper.KeeperException.NoNodeException">if no service holds the lock
/// </exception>
public virtual void ExpireActiveLockHolder(int idx)
{
Stat stat = new Stat();
byte[] data = zks.GetZKDatabase().GetData(MiniZKFCCluster.DummyZKFC.LockZnode, stat
, null);
Assert.AssertArrayEquals(Ints.ToByteArray(svcs[idx].index), data);
long session = stat.GetEphemeralOwner();
Log.Info("Expiring svc " + idx + "'s zookeeper session " + session);
zks.CloseSession(session);
}
/// <exception cref="System.Exception"/>
public override void SetUp()
{
base.SetUp();
zkServer = GetServer(serverFactory);
for (int i = 0; i < NumElectors; i++)
{
cbs[i] = Org.Mockito.Mockito.Mock <ActiveStandbyElector.ActiveStandbyElectorCallback
>();
appDatas[i] = Ints.ToByteArray(i);
electors[i] = new ActiveStandbyElector(hostPort, 5000, ParentDir, ZooDefs.Ids.OpenAclUnsafe
, Collections.EmptyList <ZKUtil.ZKAuthInfo>(), cbs[i], CommonConfigurationKeys.HaFcElectorZkOpRetriesDefault
);
}
}
/// <exception cref="System.Exception"/>
public virtual void TestHttpServer()
{
string urlRoot = jn.GetHttpServerURI();
// Check default servlets.
string pageContents = DFSTestUtil.UrlGet(new Uri(urlRoot + "/jmx"));
NUnit.Framework.Assert.IsTrue("Bad contents: " + pageContents, pageContents.Contains
("Hadoop:service=JournalNode,name=JvmMetrics"));
// Create some edits on server side
byte[] EditsData = QJMTestUtil.CreateTxnData(1, 3);
IPCLoggerChannel ch = new IPCLoggerChannel(conf, FakeNsinfo, journalId, jn.GetBoundIpcAddress
());
ch.NewEpoch(1).Get();
ch.SetEpoch(1);
ch.StartLogSegment(1, NameNodeLayoutVersion.CurrentLayoutVersion).Get();
ch.SendEdits(1L, 1, 3, EditsData).Get();
ch.FinalizeLogSegment(1, 3).Get();
// Attempt to retrieve via HTTP, ensure we get the data back
// including the header we expected
byte[] retrievedViaHttp = DFSTestUtil.UrlGetBytes(new Uri(urlRoot + "/getJournal?segmentTxId=1&jid="
+ journalId));
byte[] expected = Bytes.Concat(Ints.ToByteArray(HdfsConstants.NamenodeLayoutVersion
), (new byte[] { 0, 0, 0, 0 }), EditsData);
// layout flags section
Assert.AssertArrayEquals(expected, retrievedViaHttp);
// Attempt to fetch a non-existent file, check that we get an
// error status code
Uri badUrl = new Uri(urlRoot + "/getJournal?segmentTxId=12345&jid=" + journalId);
HttpURLConnection connection = (HttpURLConnection)badUrl.OpenConnection();
try
{
NUnit.Framework.Assert.AreEqual(404, connection.GetResponseCode());
}
finally
{
connection.Disconnect();
}
}
protected internal override byte[] TargetToData(HAServiceTarget target)
{
return(Ints.ToByteArray(((DummyHAService)target).index));
}
/// <summary>Wait for the given HA service to become the active lock holder.</summary>
/// <remarks>
/// Wait for the given HA service to become the active lock holder.
/// If the passed svc is null, waits for there to be no active
/// lock holder.
/// </remarks>
/// <exception cref="System.Exception"/>
public virtual void WaitForActiveLockHolder(int idx)
{
DummyHAService svc = idx == null ? null : svcs[idx];
ActiveStandbyElectorTestUtil.WaitForActiveLockData(ctx, zks, MiniZKFCCluster.DummyZKFC
.ScopedParentZnode, (idx == null) ? null : Ints.ToByteArray(svc.index));
}