/// <summary>Copy constructor.</summary>
/// <param name="from">where to copy from</param>
public ReplicaUnderRecovery(Org.Apache.Hadoop.Hdfs.Server.Datanode.ReplicaUnderRecovery
from)
: base(from)
{
this.original = from.GetOriginalReplica();
this.recoveryId = from.GetRecoveryID();
}
/// <summary>Duplicate the given block on all volumes.</summary>
/// <param name="blockId"/>
/// <exception cref="System.IO.IOException"/>
private void DuplicateBlock(long blockId)
{
lock (fds)
{
ReplicaInfo b = FsDatasetTestUtil.FetchReplicaInfo(fds, bpid, blockId);
foreach (FsVolumeSpi v in fds.GetVolumes())
{
if (v.GetStorageID().Equals(b.GetVolume().GetStorageID()))
{
continue;
}
// Volume without a copy of the block. Make a copy now.
FilePath sourceBlock = b.GetBlockFile();
FilePath sourceMeta = b.GetMetaFile();
string sourceRoot = b.GetVolume().GetBasePath();
string destRoot = v.GetBasePath();
string relativeBlockPath = new FilePath(sourceRoot).ToURI().Relativize(sourceBlock
.ToURI()).GetPath();
string relativeMetaPath = new FilePath(sourceRoot).ToURI().Relativize(sourceMeta.
ToURI()).GetPath();
FilePath destBlock = new FilePath(destRoot, relativeBlockPath);
FilePath destMeta = new FilePath(destRoot, relativeMetaPath);
destBlock.GetParentFile().Mkdirs();
FileUtils.CopyFile(sourceBlock, destBlock);
FileUtils.CopyFile(sourceMeta, destMeta);
if (destBlock.Exists() && destMeta.Exists())
{
Log.Info("Copied " + sourceBlock + " ==> " + destBlock);
Log.Info("Copied " + sourceMeta + " ==> " + destMeta);
}
}
}
}
public ReplicaUnderRecovery(ReplicaInfo replica, long recoveryId)
: base(replica, replica.GetVolume(), replica.GetDir())
{
// the original replica that needs to be recovered
// recovery id; it is also the generation stamp
// that the replica will be bumped to after recovery
if (replica.GetState() != HdfsServerConstants.ReplicaState.Finalized && replica.GetState
() != HdfsServerConstants.ReplicaState.Rbw && replica.GetState() != HdfsServerConstants.ReplicaState
.Rwr)
{
throw new ArgumentException("Cannot recover replica: " + replica);
}
this.original = replica;
this.recoveryId = recoveryId;
}
/// <exception cref="System.Exception"/>
private static ReplicaInPipeline GetReplica(DataNode datanode, string bpid, HdfsServerConstants.ReplicaState
expectedState)
{
ICollection <ReplicaInfo> replicas = FsDatasetTestUtil.GetReplicas(datanode.GetFSDataset
(), bpid);
for (int i = 0; i < 5 && replicas.Count == 0; i++)
{
Log.Info("wait since replicas.size() == 0; i=" + i);
Sharpen.Thread.Sleep(1000);
}
NUnit.Framework.Assert.AreEqual(1, replicas.Count);
ReplicaInfo r = replicas.GetEnumerator().Next();
NUnit.Framework.Assert.AreEqual(expectedState, r.GetState());
return((ReplicaInPipeline)r);
}
