public virtual void TestWrite()
{
MiniDFSCluster cluster = null;
int numDataNodes = 2;
Configuration conf = GetConf(numDataNodes);
try
{
cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(numDataNodes).Build();
cluster.WaitActive();
NUnit.Framework.Assert.AreEqual(numDataNodes, cluster.GetDataNodes().Count);
NameNode nn = cluster.GetNameNode();
BlockManager bm = nn.GetNamesystem().GetBlockManager();
BlockTokenSecretManager sm = bm.GetBlockTokenSecretManager();
// set a short token lifetime (1 second)
SecurityTestUtil.SetBlockTokenLifetime(sm, 1000L);
Path fileToWrite = new Path(FileToWrite);
FileSystem fs = cluster.GetFileSystem();
FSDataOutputStream stm = WriteFile(fs, fileToWrite, (short)numDataNodes, BlockSize
);
// write a partial block
int mid = rawData.Length - 1;
stm.Write(rawData, 0, mid);
stm.Hflush();
/*
* wait till token used in stm expires
*/
Org.Apache.Hadoop.Security.Token.Token <BlockTokenIdentifier> token = DFSTestUtil.
GetBlockToken(stm);
while (!SecurityTestUtil.IsBlockTokenExpired(token))
{
try
{
Sharpen.Thread.Sleep(10);
}
catch (Exception)
{
}
}
// remove a datanode to force re-establishing pipeline
cluster.StopDataNode(0);
// write the rest of the file
stm.Write(rawData, mid, rawData.Length - mid);
stm.Close();
// check if write is successful
FSDataInputStream in4 = fs.Open(fileToWrite);
NUnit.Framework.Assert.IsTrue(CheckFile1(in4));
}
finally
{
if (cluster != null)
{
cluster.Shutdown();
}
}
}