internal Fetcher(JobConf job, TaskAttemptID reduceId, ShuffleSchedulerImpl <K, V>
scheduler, MergeManager <K, V> merger, Reporter reporter, ShuffleClientMetrics metrics
, ExceptionReporter exceptionReporter, SecretKey shuffleKey, int id)
{
/* Default read timeout (in milliseconds) */
// Initiative value is 0, which means it hasn't retried yet.
this.jobConf = job;
this.reporter = reporter;
this.scheduler = scheduler;
this.merger = merger;
this.metrics = metrics;
this.exceptionReporter = exceptionReporter;
this.id = id;
this.reduce = reduceId.GetTaskID().GetId();
this.shuffleSecretKey = shuffleKey;
ioErrs = reporter.GetCounter(ShuffleErrGrpName, Fetcher.ShuffleErrors.IoError.ToString
());
wrongLengthErrs = reporter.GetCounter(ShuffleErrGrpName, Fetcher.ShuffleErrors.WrongLength
.ToString());
badIdErrs = reporter.GetCounter(ShuffleErrGrpName, Fetcher.ShuffleErrors.BadId.ToString
());
wrongMapErrs = reporter.GetCounter(ShuffleErrGrpName, Fetcher.ShuffleErrors.WrongMap
.ToString());
connectionErrs = reporter.GetCounter(ShuffleErrGrpName, Fetcher.ShuffleErrors.Connection
.ToString());
wrongReduceErrs = reporter.GetCounter(ShuffleErrGrpName, Fetcher.ShuffleErrors.WrongReduce
.ToString());
this.connectionTimeout = job.GetInt(MRJobConfig.ShuffleConnectTimeout, DefaultStalledCopyTimeout
);
this.readTimeout = job.GetInt(MRJobConfig.ShuffleReadTimeout, DefaultReadTimeout);
this.fetchRetryInterval = job.GetInt(MRJobConfig.ShuffleFetchRetryIntervalMs, MRJobConfig
.DefaultShuffleFetchRetryIntervalMs);
this.fetchRetryTimeout = job.GetInt(MRJobConfig.ShuffleFetchRetryTimeoutMs, DefaultStalledCopyTimeout
);
bool shuffleFetchEnabledDefault = job.GetBoolean(YarnConfiguration.NmRecoveryEnabled
, YarnConfiguration.DefaultNmRecoveryEnabled);
this.fetchRetryEnabled = job.GetBoolean(MRJobConfig.ShuffleFetchRetryEnabled, shuffleFetchEnabledDefault
);
SetName("fetcher#" + id);
SetDaemon(true);
lock (typeof(Org.Apache.Hadoop.Mapreduce.Task.Reduce.Fetcher))
{
sslShuffle = job.GetBoolean(MRConfig.ShuffleSslEnabledKey, MRConfig.ShuffleSslEnabledDefault
);
if (sslShuffle && sslFactory == null)
{
sslFactory = new SSLFactory(SSLFactory.Mode.Client, job);
try
{
sslFactory.Init();
}
catch (Exception ex)
{
sslFactory.Destroy();
throw new RuntimeException(ex);
}
}
}
}
public Fetcher(JobConf job, TaskAttemptID reduceId, ShuffleSchedulerImpl <K, V> scheduler
, MergeManager <K, V> merger, Reporter reporter, ShuffleClientMetrics metrics, ExceptionReporter
exceptionReporter, SecretKey shuffleKey)
: this(job, reduceId, scheduler, merger, reporter, metrics, exceptionReporter, shuffleKey
, ++nextId)
{
}
public virtual void Setup()
{
// mocked generics
Log.Info(">>>> " + name.GetMethodName());
job = new JobConf();
job.SetBoolean(MRJobConfig.ShuffleFetchRetryEnabled, false);
jobWithRetry = new JobConf();
jobWithRetry.SetBoolean(MRJobConfig.ShuffleFetchRetryEnabled, true);
id = TaskAttemptID.ForName("attempt_0_1_r_1_1");
ss = Org.Mockito.Mockito.Mock <ShuffleSchedulerImpl>();
mm = Org.Mockito.Mockito.Mock <MergeManagerImpl>();
r = Org.Mockito.Mockito.Mock <Reporter>();
metrics = Org.Mockito.Mockito.Mock <ShuffleClientMetrics>();
except = Org.Mockito.Mockito.Mock <ExceptionReporter>();
key = JobTokenSecretManager.CreateSecretKey(new byte[] { 0, 0, 0, 0 });
connection = Org.Mockito.Mockito.Mock <HttpURLConnection>();
allErrs = Org.Mockito.Mockito.Mock <Counters.Counter>();
Org.Mockito.Mockito.When(r.GetCounter(Matchers.AnyString(), Matchers.AnyString())
).ThenReturn(allErrs);
AList <TaskAttemptID> maps = new AList <TaskAttemptID>(1);
maps.AddItem(map1ID);
maps.AddItem(map2ID);
Org.Mockito.Mockito.When(ss.GetMapsForHost(host)).ThenReturn(maps);
}
public FakeFetcher(JobConf job, TaskAttemptID reduceId, ShuffleSchedulerImpl <K, V
> scheduler, MergeManagerImpl <K, V> merger, Reporter reporter, ShuffleClientMetrics
metrics, ExceptionReporter exceptionReporter, SecretKey jobTokenSecret, HttpURLConnection
connection, int id)
: base(job, reduceId, scheduler, merger, reporter, metrics, exceptionReporter, jobTokenSecret
, id)
{
this.connection = connection;
}
public virtual void TestSucceedAndFailedCopyMap <K, V>()
{
JobConf job = new JobConf();
job.SetNumMapTasks(2);
//mock creation
TaskUmbilicalProtocol mockUmbilical = Org.Mockito.Mockito.Mock <TaskUmbilicalProtocol
>();
Reporter mockReporter = Org.Mockito.Mockito.Mock <Reporter>();
FileSystem mockFileSystem = Org.Mockito.Mockito.Mock <FileSystem>();
Type combinerClass = job.GetCombinerClass();
Task.CombineOutputCollector <K, V> mockCombineOutputCollector = (Task.CombineOutputCollector
<K, V>)Org.Mockito.Mockito.Mock <Task.CombineOutputCollector>();
// needed for mock with generic
TaskAttemptID mockTaskAttemptID = Org.Mockito.Mockito.Mock <TaskAttemptID>();
LocalDirAllocator mockLocalDirAllocator = Org.Mockito.Mockito.Mock <LocalDirAllocator
>();
CompressionCodec mockCompressionCodec = Org.Mockito.Mockito.Mock <CompressionCodec
>();
Counters.Counter mockCounter = Org.Mockito.Mockito.Mock <Counters.Counter>();
TaskStatus mockTaskStatus = Org.Mockito.Mockito.Mock <TaskStatus>();
Progress mockProgress = Org.Mockito.Mockito.Mock <Progress>();
MapOutputFile mockMapOutputFile = Org.Mockito.Mockito.Mock <MapOutputFile>();
Org.Apache.Hadoop.Mapred.Task mockTask = Org.Mockito.Mockito.Mock <Org.Apache.Hadoop.Mapred.Task
>();
MapOutput <K, V> output = Org.Mockito.Mockito.Mock <MapOutput>();
ShuffleConsumerPlugin.Context <K, V> context = new ShuffleConsumerPlugin.Context <K
, V>(mockTaskAttemptID, job, mockFileSystem, mockUmbilical, mockLocalDirAllocator
, mockReporter, mockCompressionCodec, combinerClass, mockCombineOutputCollector,
mockCounter, mockCounter, mockCounter, mockCounter, mockCounter, mockCounter, mockTaskStatus
, mockProgress, mockProgress, mockTask, mockMapOutputFile, null);
TaskStatus status = new _TaskStatus_251();
Progress progress = new Progress();
ShuffleSchedulerImpl <K, V> scheduler = new ShuffleSchedulerImpl <K, V>(job, status
, null, null, progress, context.GetShuffledMapsCounter(), context.GetReduceShuffleBytes
(), context.GetFailedShuffleCounter());
MapHost host1 = new MapHost("host1", null);
TaskAttemptID failedAttemptID = new TaskAttemptID(new TaskID(new JobID("test", 0)
, TaskType.Map, 0), 0);
TaskAttemptID succeedAttemptID = new TaskAttemptID(new TaskID(new JobID("test", 0
), TaskType.Map, 1), 1);
// handle output fetch failure for failedAttemptID, part I
scheduler.HostFailed(host1.GetHostName());
// handle output fetch succeed for succeedAttemptID
long bytes = (long)500 * 1024 * 1024;
scheduler.CopySucceeded(succeedAttemptID, host1, bytes, 0, 500000, output);
// handle output fetch failure for failedAttemptID, part II
// for MAPREDUCE-6361: verify no NPE exception get thrown out
scheduler.CopyFailed(failedAttemptID, host1, true, false);
}
public LocalFetcher(JobConf job, TaskAttemptID reduceId, ShuffleSchedulerImpl <K,
V> scheduler, MergeManager <K, V> merger, Reporter reporter, ShuffleClientMetrics
metrics, ExceptionReporter exceptionReporter, SecretKey shuffleKey, IDictionary
<TaskAttemptID, MapOutputFile> localMapFiles)
: base(job, reduceId, scheduler, merger, reporter, metrics, exceptionReporter, shuffleKey
)
{
this.job = job;
this.localMapFiles = localMapFiles;
SetName("localfetcher#" + id);
SetDaemon(true);
}
//Used for status updates
public virtual void Init(ShuffleConsumerPlugin.Context context)
{
this.context = context;
this.reduceId = context.GetReduceId();
this.jobConf = context.GetJobConf();
this.umbilical = context.GetUmbilical();
this.reporter = context.GetReporter();
this.metrics = new ShuffleClientMetrics(reduceId, jobConf);
this.copyPhase = context.GetCopyPhase();
this.taskStatus = context.GetStatus();
this.reduceTask = context.GetReduceTask();
this.localMapFiles = context.GetLocalMapFiles();
scheduler = new ShuffleSchedulerImpl <K, V>(jobConf, taskStatus, reduceId, this, copyPhase
, context.GetShuffledMapsCounter(), context.GetReduceShuffleBytes(), context.GetFailedShuffleCounter
());
merger = CreateMergeManager(context);
}
/// <exception cref="System.Exception"/>
public virtual void TestCopyFromHostWithRetry()
{
InMemoryMapOutput <Text, Text> immo = Org.Mockito.Mockito.Mock <InMemoryMapOutput>(
);
ss = Org.Mockito.Mockito.Mock <ShuffleSchedulerImpl>();
Fetcher <Text, Text> underTest = new TestFetcher.FakeFetcher <Text, Text>(jobWithRetry
, id, ss, mm, r, metrics, except, key, connection, true);
string replyHash = SecureShuffleUtils.GenerateHash(Sharpen.Runtime.GetBytesForString
(encHash), key);
Org.Mockito.Mockito.When(connection.GetResponseCode()).ThenReturn(200);
Org.Mockito.Mockito.When(connection.GetHeaderField(SecureShuffleUtils.HttpHeaderReplyUrlHash
)).ThenReturn(replyHash);
ShuffleHeader header = new ShuffleHeader(map1ID.ToString(), 10, 10, 1);
ByteArrayOutputStream bout = new ByteArrayOutputStream();
header.Write(new DataOutputStream(bout));
ByteArrayInputStream @in = new ByteArrayInputStream(bout.ToByteArray());
Org.Mockito.Mockito.When(connection.GetInputStream()).ThenReturn(@in);
Org.Mockito.Mockito.When(connection.GetHeaderField(ShuffleHeader.HttpHeaderName))
.ThenReturn(ShuffleHeader.DefaultHttpHeaderName);
Org.Mockito.Mockito.When(connection.GetHeaderField(ShuffleHeader.HttpHeaderVersion
)).ThenReturn(ShuffleHeader.DefaultHttpHeaderVersion);
Org.Mockito.Mockito.When(mm.Reserve(Matchers.Any <TaskAttemptID>(), Matchers.AnyLong
(), Matchers.AnyInt())).ThenReturn(immo);
long retryTime = Time.MonotonicNow();
Org.Mockito.Mockito.DoAnswer(new _Answer_375(retryTime)).When(immo).Shuffle(Matchers.Any
<MapHost>(), Matchers.Any <InputStream>(), Matchers.AnyLong(), Matchers.AnyLong()
, Matchers.Any <ShuffleClientMetrics>(), Matchers.Any <Reporter>());
// Emulate host down for 3 seconds.
underTest.CopyFromHost(host);
Org.Mockito.Mockito.Verify(ss, Org.Mockito.Mockito.Never()).CopyFailed(Matchers.Any
<TaskAttemptID>(), Matchers.Any <MapHost>(), Matchers.AnyBoolean(), Matchers.AnyBoolean
());
}
public virtual void TestTipFailed()
{
JobConf job = new JobConf();
job.SetNumMapTasks(2);
TaskStatus status = new _TaskStatus_49();
Progress progress = new Progress();
TaskAttemptID reduceId = new TaskAttemptID("314159", 0, TaskType.Reduce, 0, 0);
ShuffleSchedulerImpl scheduler = new ShuffleSchedulerImpl(job, status, reduceId,
null, progress, null, null, null);
JobID jobId = new JobID();
TaskID taskId1 = new TaskID(jobId, TaskType.Reduce, 1);
scheduler.TipFailed(taskId1);
NUnit.Framework.Assert.AreEqual("Progress should be 0.5", 0.5f, progress.GetProgress
(), 0.0f);
NUnit.Framework.Assert.IsFalse(scheduler.WaitUntilDone(1));
TaskID taskId0 = new TaskID(jobId, TaskType.Reduce, 0);
scheduler.TipFailed(taskId0);
NUnit.Framework.Assert.AreEqual("Progress should be 1.0", 1.0f, progress.GetProgress
(), 0.0f);
NUnit.Framework.Assert.IsTrue(scheduler.WaitUntilDone(1));
}
public virtual void TestAggregatedTransferRate <K, V>()
{
JobConf job = new JobConf();
job.SetNumMapTasks(10);
//mock creation
TaskUmbilicalProtocol mockUmbilical = Org.Mockito.Mockito.Mock <TaskUmbilicalProtocol
>();
Reporter mockReporter = Org.Mockito.Mockito.Mock <Reporter>();
FileSystem mockFileSystem = Org.Mockito.Mockito.Mock <FileSystem>();
Type combinerClass = job.GetCombinerClass();
Task.CombineOutputCollector <K, V> mockCombineOutputCollector = (Task.CombineOutputCollector
<K, V>)Org.Mockito.Mockito.Mock <Task.CombineOutputCollector>();
// needed for mock with generic
TaskAttemptID mockTaskAttemptID = Org.Mockito.Mockito.Mock <TaskAttemptID>();
LocalDirAllocator mockLocalDirAllocator = Org.Mockito.Mockito.Mock <LocalDirAllocator
>();
CompressionCodec mockCompressionCodec = Org.Mockito.Mockito.Mock <CompressionCodec
>();
Counters.Counter mockCounter = Org.Mockito.Mockito.Mock <Counters.Counter>();
TaskStatus mockTaskStatus = Org.Mockito.Mockito.Mock <TaskStatus>();
Progress mockProgress = Org.Mockito.Mockito.Mock <Progress>();
MapOutputFile mockMapOutputFile = Org.Mockito.Mockito.Mock <MapOutputFile>();
Org.Apache.Hadoop.Mapred.Task mockTask = Org.Mockito.Mockito.Mock <Org.Apache.Hadoop.Mapred.Task
>();
MapOutput <K, V> output = Org.Mockito.Mockito.Mock <MapOutput>();
ShuffleConsumerPlugin.Context <K, V> context = new ShuffleConsumerPlugin.Context <K
, V>(mockTaskAttemptID, job, mockFileSystem, mockUmbilical, mockLocalDirAllocator
, mockReporter, mockCompressionCodec, combinerClass, mockCombineOutputCollector,
mockCounter, mockCounter, mockCounter, mockCounter, mockCounter, mockCounter, mockTaskStatus
, mockProgress, mockProgress, mockTask, mockMapOutputFile, null);
TaskStatus status = new _TaskStatus_115();
Progress progress = new Progress();
ShuffleSchedulerImpl <K, V> scheduler = new ShuffleSchedulerImpl <K, V>(job, status
, null, null, progress, context.GetShuffledMapsCounter(), context.GetReduceShuffleBytes
(), context.GetFailedShuffleCounter());
TaskAttemptID attemptID0 = new TaskAttemptID(new TaskID(new JobID("test", 0), TaskType
.Map, 0), 0);
//adding the 1st interval, 40MB from 60s to 100s
long bytes = (long)40 * 1024 * 1024;
scheduler.CopySucceeded(attemptID0, new MapHost(null, null), bytes, 60000, 100000
, output);
NUnit.Framework.Assert.AreEqual(CopyMessage(1, 1, 1), progress.ToString());
TaskAttemptID attemptID1 = new TaskAttemptID(new TaskID(new JobID("test", 0), TaskType
.Map, 1), 1);
//adding the 2nd interval before the 1st interval, 50MB from 0s to 50s
bytes = (long)50 * 1024 * 1024;
scheduler.CopySucceeded(attemptID1, new MapHost(null, null), bytes, 0, 50000, output
);
NUnit.Framework.Assert.AreEqual(CopyMessage(2, 1, 1), progress.ToString());
TaskAttemptID attemptID2 = new TaskAttemptID(new TaskID(new JobID("test", 0), TaskType
.Map, 2), 2);
//adding the 3rd interval overlapping with the 1st and the 2nd interval
//110MB from 25s to 80s
bytes = (long)110 * 1024 * 1024;
scheduler.CopySucceeded(attemptID2, new MapHost(null, null), bytes, 25000, 80000,
output);
NUnit.Framework.Assert.AreEqual(CopyMessage(3, 2, 2), progress.ToString());
TaskAttemptID attemptID3 = new TaskAttemptID(new TaskID(new JobID("test", 0), TaskType
.Map, 3), 3);
//adding the 4th interval just after the 2nd interval, 100MB from 100s to 300s
bytes = (long)100 * 1024 * 1024;
scheduler.CopySucceeded(attemptID3, new MapHost(null, null), bytes, 100000, 300000
, output);
NUnit.Framework.Assert.AreEqual(CopyMessage(4, 0.5, 1), progress.ToString());
TaskAttemptID attemptID4 = new TaskAttemptID(new TaskID(new JobID("test", 0), TaskType
.Map, 4), 4);
//adding the 5th interval between after 4th, 50MB from 350s to 400s
bytes = (long)50 * 1024 * 1024;
scheduler.CopySucceeded(attemptID4, new MapHost(null, null), bytes, 350000, 400000
, output);
NUnit.Framework.Assert.AreEqual(CopyMessage(5, 1, 1), progress.ToString());
TaskAttemptID attemptID5 = new TaskAttemptID(new TaskID(new JobID("test", 0), TaskType
.Map, 5), 5);
//adding the 6th interval between after 5th, 50MB from 450s to 500s
bytes = (long)50 * 1024 * 1024;
scheduler.CopySucceeded(attemptID5, new MapHost(null, null), bytes, 450000, 500000
, output);
NUnit.Framework.Assert.AreEqual(CopyMessage(6, 1, 1), progress.ToString());
TaskAttemptID attemptID6 = new TaskAttemptID(new TaskID(new JobID("test", 0), TaskType
.Map, 6), 6);
//adding the 7th interval between after 5th and 6th interval, 20MB from 320s to 340s
bytes = (long)20 * 1024 * 1024;
scheduler.CopySucceeded(attemptID6, new MapHost(null, null), bytes, 320000, 340000
, output);
NUnit.Framework.Assert.AreEqual(CopyMessage(7, 1, 1), progress.ToString());
TaskAttemptID attemptID7 = new TaskAttemptID(new TaskID(new JobID("test", 0), TaskType
.Map, 7), 7);
//adding the 8th interval overlapping with 4th, 5th, and 7th 30MB from 290s to 350s
bytes = (long)30 * 1024 * 1024;
scheduler.CopySucceeded(attemptID7, new MapHost(null, null), bytes, 290000, 350000
, output);
NUnit.Framework.Assert.AreEqual(CopyMessage(8, 0.5, 1), progress.ToString());
TaskAttemptID attemptID8 = new TaskAttemptID(new TaskID(new JobID("test", 0), TaskType
.Map, 8), 8);
//adding the 9th interval overlapping with 5th and 6th, 50MB from 400s to 450s
bytes = (long)50 * 1024 * 1024;
scheduler.CopySucceeded(attemptID8, new MapHost(null, null), bytes, 400000, 450000
, output);
NUnit.Framework.Assert.AreEqual(CopyMessage(9, 1, 1), progress.ToString());
TaskAttemptID attemptID9 = new TaskAttemptID(new TaskID(new JobID("test", 0), TaskType
.Map, 9), 9);
//adding the 10th interval overlapping with all intervals, 500MB from 0s to 500s
bytes = (long)500 * 1024 * 1024;
scheduler.CopySucceeded(attemptID9, new MapHost(null, null), bytes, 0, 500000, output
);
NUnit.Framework.Assert.AreEqual(CopyMessage(10, 1, 2), progress.ToString());
}
public Referee(ShuffleSchedulerImpl <K, V> _enclosing)
{
this._enclosing = _enclosing;
this.SetName("ShufflePenaltyReferee");
this.SetDaemon(true);
}
