public virtual void TestScheduleSameBlock()
{
Configuration conf = new HdfsConfiguration();
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(4).Build();
try
{
cluster.WaitActive();
DistributedFileSystem dfs = cluster.GetFileSystem();
string file = "/testScheduleSameBlock/file";
{
FSDataOutputStream @out = dfs.Create(new Path(file));
@out.WriteChars("testScheduleSameBlock");
@out.Close();
}
Org.Apache.Hadoop.Hdfs.Server.Mover.Mover mover = NewMover(conf);
mover.Init();
Mover.Processor processor = new Mover.Processor(this);
LocatedBlock lb = dfs.GetClient().GetLocatedBlocks(file, 0).Get(0);
IList <Mover.MLocation> locations = Mover.MLocation.ToLocations(lb);
Mover.MLocation ml = locations[0];
Dispatcher.DBlock db = mover.NewDBlock(lb.GetBlock().GetLocalBlock(), locations);
IList <StorageType> storageTypes = new AList <StorageType>(Arrays.AsList(StorageType
.Default, StorageType.Default));
NUnit.Framework.Assert.IsTrue(processor.ScheduleMoveReplica(db, ml, storageTypes)
);
NUnit.Framework.Assert.IsFalse(processor.ScheduleMoveReplica(db, ml, storageTypes
));
}
finally
{
cluster.Shutdown();
}
}
/// <exception cref="System.IO.IOException"/>
/// <exception cref="System.Exception"/>
internal static int Run(IDictionary <URI, IList <Path> > namenodes, Configuration conf
)
{
long sleeptime = conf.GetLong(DFSConfigKeys.DfsHeartbeatIntervalKey, DFSConfigKeys
.DfsHeartbeatIntervalDefault) * 2000 + conf.GetLong(DFSConfigKeys.DfsNamenodeReplicationIntervalKey
, DFSConfigKeys.DfsNamenodeReplicationIntervalDefault) * 1000;
AtomicInteger retryCount = new AtomicInteger(0);
Log.Info("namenodes = " + namenodes);
IList <NameNodeConnector> connectors = Sharpen.Collections.EmptyList();
try
{
connectors = NameNodeConnector.NewNameNodeConnectors(namenodes, typeof(Org.Apache.Hadoop.Hdfs.Server.Mover.Mover
).Name, MoverIdPath, conf, NameNodeConnector.DefaultMaxIdleIterations);
while (connectors.Count > 0)
{
Sharpen.Collections.Shuffle(connectors);
IEnumerator <NameNodeConnector> iter = connectors.GetEnumerator();
while (iter.HasNext())
{
NameNodeConnector nnc = iter.Next();
Org.Apache.Hadoop.Hdfs.Server.Mover.Mover m = new Org.Apache.Hadoop.Hdfs.Server.Mover.Mover
(nnc, conf, retryCount);
ExitStatus r = m.Run();
if (r == ExitStatus.Success)
{
IOUtils.Cleanup(Log, nnc);
iter.Remove();
}
else
{
if (r != ExitStatus.InProgress)
{
// must be an error statue, return
return(r.GetExitCode());
}
}
}
Sharpen.Thread.Sleep(sleeptime);
}
return(ExitStatus.Success.GetExitCode());
}
finally
{
foreach (NameNodeConnector nnc in connectors)
{
IOUtils.Cleanup(Log, nnc);
}
}
}