public virtual void TestCreate()
{
string src = "/testNamenodeRetryCache/testCreate/file";
// Two retried calls succeed
NewCall();
HdfsFileStatus status = nnRpc.Create(src, perm, "holder", new EnumSetWritable <CreateFlag
>(EnumSet.Of(CreateFlag.Create)), true, (short)1, BlockSize, null);
NUnit.Framework.Assert.AreEqual(status, nnRpc.Create(src, perm, "holder", new EnumSetWritable
<CreateFlag>(EnumSet.Of(CreateFlag.Create)), true, (short)1, BlockSize, null));
NUnit.Framework.Assert.AreEqual(status, nnRpc.Create(src, perm, "holder", new EnumSetWritable
<CreateFlag>(EnumSet.Of(CreateFlag.Create)), true, (short)1, BlockSize, null));
// A non-retried call fails
NewCall();
try
{
nnRpc.Create(src, perm, "holder", new EnumSetWritable <CreateFlag>(EnumSet.Of(CreateFlag
.Create)), true, (short)1, BlockSize, null);
NUnit.Framework.Assert.Fail("testCreate - expected exception is not thrown");
}
catch (IOException)
{
}
}
public virtual void TestAddBlockRetryShouldReturnBlockWithLocations()
{
string src = "/testAddBlockRetryShouldReturnBlockWithLocations";
NamenodeProtocols nameNodeRpc = cluster.GetNameNodeRpc();
// create file
nameNodeRpc.Create(src, FsPermission.GetFileDefault(), "clientName", new EnumSetWritable
<CreateFlag>(EnumSet.Of(CreateFlag.Create)), true, (short)3, 1024, null);
// start first addBlock()
Log.Info("Starting first addBlock for " + src);
LocatedBlock lb1 = nameNodeRpc.AddBlock(src, "clientName", null, null, INodeId.GrandfatherInodeId
, null);
NUnit.Framework.Assert.IsTrue("Block locations should be present", lb1.GetLocations
().Length > 0);
cluster.RestartNameNode();
nameNodeRpc = cluster.GetNameNodeRpc();
LocatedBlock lb2 = nameNodeRpc.AddBlock(src, "clientName", null, null, INodeId.GrandfatherInodeId
, null);
NUnit.Framework.Assert.AreEqual("Blocks are not equal", lb1.GetBlock(), lb2.GetBlock
());
NUnit.Framework.Assert.IsTrue("Wrong locations with retry", lb2.GetLocations().Length
> 0);
}
public virtual void TestRetryAddBlockWhileInChooseTarget()
{
string src = "/testRetryAddBlockWhileInChooseTarget";
FSNamesystem ns = cluster.GetNamesystem();
NamenodeProtocols nn = cluster.GetNameNodeRpc();
// create file
nn.Create(src, FsPermission.GetFileDefault(), "clientName", new EnumSetWritable <CreateFlag
>(EnumSet.Of(CreateFlag.Create)), true, (short)3, 1024, null);
// start first addBlock()
Log.Info("Starting first addBlock for " + src);
LocatedBlock[] onRetryBlock = new LocatedBlock[1];
DatanodeStorageInfo[] targets = ns.GetNewBlockTargets(src, INodeId.GrandfatherInodeId
, "clientName", null, null, null, onRetryBlock);
NUnit.Framework.Assert.IsNotNull("Targets must be generated", targets);
// run second addBlock()
Log.Info("Starting second addBlock for " + src);
nn.AddBlock(src, "clientName", null, null, INodeId.GrandfatherInodeId, null);
NUnit.Framework.Assert.IsTrue("Penultimate block must be complete", CheckFileProgress
(src, false));
LocatedBlocks lbs = nn.GetBlockLocations(src, 0, long.MaxValue);
NUnit.Framework.Assert.AreEqual("Must be one block", 1, lbs.GetLocatedBlocks().Count
);
LocatedBlock lb2 = lbs.Get(0);
NUnit.Framework.Assert.AreEqual("Wrong replication", Replication, lb2.GetLocations
().Length);
// continue first addBlock()
LocatedBlock newBlock = ns.StoreAllocatedBlock(src, INodeId.GrandfatherInodeId, "clientName"
, null, targets);
NUnit.Framework.Assert.AreEqual("Blocks are not equal", lb2.GetBlock(), newBlock.
GetBlock());
// check locations
lbs = nn.GetBlockLocations(src, 0, long.MaxValue);
NUnit.Framework.Assert.AreEqual("Must be one block", 1, lbs.GetLocatedBlocks().Count
);
LocatedBlock lb1 = lbs.Get(0);
NUnit.Framework.Assert.AreEqual("Wrong replication", Replication, lb1.GetLocations
().Length);
NUnit.Framework.Assert.AreEqual("Blocks are not equal", lb1.GetBlock(), lb2.GetBlock
());
}
