public virtual void TestSimpleRead()
{
NamespaceInfo nsi = NewNSInfo();
BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf, BKJMUtil.CreateJournalURI
("/hdfsjournal-simpleread"), nsi);
bkjm.Format(nsi);
long numTransactions = 10000;
EditLogOutputStream @out = bkjm.StartLogSegment(1, NameNodeLayoutVersion.CurrentLayoutVersion
);
for (long i = 1; i <= numTransactions; i++)
{
FSEditLogOp op = FSEditLogTestUtil.GetNoOpInstance();
op.SetTransactionId(i);
@out.Write(op);
}
@out.Close();
bkjm.FinalizeLogSegment(1, numTransactions);
IList <EditLogInputStream> @in = new AList <EditLogInputStream>();
bkjm.SelectInputStreams(@in, 1, true);
try
{
NUnit.Framework.Assert.AreEqual(numTransactions, FSEditLogTestUtil.CountTransactionsInStream
(@in[0]));
}
finally
{
@in[0].Close();
}
}
/// <summary>Test speculative read feature supported by bookkeeper.</summary>
/// <remarks>
/// Test speculative read feature supported by bookkeeper. Keep one bookie
/// alive and sleep all the other bookies. Non spec client will hang for long
/// time to read the entries from the bookkeeper.
/// </remarks>
/// <exception cref="System.Exception"/>
public virtual void TestSpeculativeRead()
{
// starting 9 more servers
for (int i = 1; i < 10; i++)
{
bks.AddItem(bkutil.NewBookie());
}
NamespaceInfo nsi = NewNSInfo();
Configuration conf = new Configuration();
int ensembleSize = numLocalBookies + 9;
conf.SetInt(BookKeeperJournalManager.BkjmBookkeeperEnsembleSize, ensembleSize);
conf.SetInt(BookKeeperJournalManager.BkjmBookkeeperQuorumSize, ensembleSize);
conf.SetInt(BookKeeperJournalManager.BkjmBookkeeperSpeculativeReadTimeoutMs, 100);
// sets 60 minute
conf.SetInt(BookKeeperJournalManager.BkjmBookkeeperReadEntryTimeoutSec, 3600);
BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf, BKJMUtil.CreateJournalURI
("/hdfsjournal-specread"), nsi);
bkjm.Format(nsi);
long numTransactions = 1000;
EditLogOutputStream @out = bkjm.StartLogSegment(1, NameNodeLayoutVersion.CurrentLayoutVersion
);
for (long i_1 = 1; i_1 <= numTransactions; i_1++)
{
FSEditLogOp op = FSEditLogTestUtil.GetNoOpInstance();
op.SetTransactionId(i_1);
@out.Write(op);
}
@out.Close();
bkjm.FinalizeLogSegment(1, numTransactions);
IList <EditLogInputStream> @in = new AList <EditLogInputStream>();
bkjm.SelectInputStreams(@in, 1, true);
// sleep 9 bk servers. Now only one server is running and responding to the
// clients
CountDownLatch sleepLatch = new CountDownLatch(1);
foreach (BookieServer bookie in bks)
{
SleepBookie(sleepLatch, bookie);
}
try
{
NUnit.Framework.Assert.AreEqual(numTransactions, FSEditLogTestUtil.CountTransactionsInStream
(@in[0]));
}
finally
{
@in[0].Close();
sleepLatch.CountDown();
bkjm.Close();
}
}
// expected
/// <summary>Test ack quorum feature supported by bookkeeper.</summary>
/// <remarks>
/// Test ack quorum feature supported by bookkeeper. Keep ack quorum bookie
/// alive and sleep all the other bookies. Now the client would wait for the
/// acknowledgement from the ack size bookies and after receiving the success
/// response will continue writing. Non ack client will hang long time to add
/// entries.
/// </remarks>
/// <exception cref="System.Exception"/>
public virtual void TestAckQuorum()
{
// slow bookie
newBookie = bkutil.NewBookie();
// make quorum size and ensemble size same to avoid the interleave writing
// of the ledger entries
int ensembleSize = numBookies + 1;
int quorumSize = numBookies + 1;
int ackSize = numBookies;
// ensure that the journal manager has to use all bookies,
// so that a failure will fail the journal manager
Configuration conf = new Configuration();
conf.SetInt(BookKeeperJournalManager.BkjmBookkeeperEnsembleSize, ensembleSize);
conf.SetInt(BookKeeperJournalManager.BkjmBookkeeperQuorumSize, quorumSize);
conf.SetInt(BookKeeperJournalManager.BkjmBookkeeperAckQuorumSize, ackSize);
// sets 60 minutes
conf.SetInt(BookKeeperJournalManager.BkjmBookkeeperAddEntryTimeoutSec, 3600);
NamespaceInfo nsi = NewNSInfo();
BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf, BKJMUtil.CreateJournalURI
("/hdfsjournal-onebookiefailure"), nsi);
bkjm.Format(nsi);
CountDownLatch sleepLatch = new CountDownLatch(1);
SleepBookie(sleepLatch, newBookie);
EditLogOutputStream @out = bkjm.StartLogSegment(1, NameNodeLayoutVersion.CurrentLayoutVersion
);
int numTransactions = 100;
for (long i = 1; i <= numTransactions; i++)
{
FSEditLogOp op = FSEditLogTestUtil.GetNoOpInstance();
op.SetTransactionId(i);
@out.Write(op);
}
@out.Close();
bkjm.FinalizeLogSegment(1, numTransactions);
IList <EditLogInputStream> @in = new AList <EditLogInputStream>();
bkjm.SelectInputStreams(@in, 1, true);
try
{
NUnit.Framework.Assert.AreEqual(numTransactions, FSEditLogTestUtil.CountTransactionsInStream
(@in[0]));
}
finally
{
sleepLatch.CountDown();
@in[0].Close();
bkjm.Close();
}
}
/// <exception cref="System.Exception"/>
public virtual void TestDefaultAckQuorum()
{
newBookie = bkutil.NewBookie();
int ensembleSize = numBookies + 1;
int quorumSize = numBookies + 1;
// ensure that the journal manager has to use all bookies,
// so that a failure will fail the journal manager
Configuration conf = new Configuration();
conf.SetInt(BookKeeperJournalManager.BkjmBookkeeperEnsembleSize, ensembleSize);
conf.SetInt(BookKeeperJournalManager.BkjmBookkeeperQuorumSize, quorumSize);
// sets 2 secs
conf.SetInt(BookKeeperJournalManager.BkjmBookkeeperAddEntryTimeoutSec, 2);
NamespaceInfo nsi = NewNSInfo();
BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf, BKJMUtil.CreateJournalURI
("/hdfsjournal-onebookiefailure"), nsi);
bkjm.Format(nsi);
CountDownLatch sleepLatch = new CountDownLatch(1);
SleepBookie(sleepLatch, newBookie);
EditLogOutputStream @out = bkjm.StartLogSegment(1, NameNodeLayoutVersion.CurrentLayoutVersion
);
int numTransactions = 100;
for (long i = 1; i <= numTransactions; i++)
{
FSEditLogOp op = FSEditLogTestUtil.GetNoOpInstance();
op.SetTransactionId(i);
@out.Write(op);
}
try
{
@out.Close();
bkjm.FinalizeLogSegment(1, numTransactions);
IList <EditLogInputStream> @in = new AList <EditLogInputStream>();
bkjm.SelectInputStreams(@in, 1, true);
try
{
NUnit.Framework.Assert.AreEqual(numTransactions, FSEditLogTestUtil.CountTransactionsInStream
(@in[0]));
}
finally
{
@in[0].Close();
}
NUnit.Framework.Assert.Fail("Should throw exception as not enough non-faulty bookies available!"
);
}
catch (IOException)
{
}
}