/// <exception cref="System.IO.IOException"/>
private void DoIt(IDictionary <string, string> paramsToCorrupt)
{
MiniDFSCluster cluster = null;
FileSystem fs = null;
SecondaryNameNode snn = null;
try
{
Configuration conf = new HdfsConfiguration();
cluster = new MiniDFSCluster.Builder(conf).Build();
cluster.WaitActive();
conf.Set(DFSConfigKeys.DfsNamenodeSecondaryHttpAddressKey, "0.0.0.0:0");
snn = new SecondaryNameNode(conf);
fs = cluster.GetFileSystem();
fs.Mkdirs(new Path("/test/foo"));
snn.DoCheckpoint();
IList <FilePath> versionFiles = snn.GetFSImage().GetStorage().GetFiles(null, "VERSION"
);
snn.Shutdown();
foreach (FilePath versionFile in versionFiles)
{
foreach (KeyValuePair <string, string> paramToCorrupt in paramsToCorrupt)
{
string param = paramToCorrupt.Key;
string val = paramToCorrupt.Value;
System.Console.Out.WriteLine("Changing '" + param + "' to '" + val + "' in " + versionFile
);
FSImageTestUtil.CorruptVersionFile(versionFile, param, val);
}
}
snn = new SecondaryNameNode(conf);
fs.Mkdirs(new Path("/test/bar"));
snn.DoCheckpoint();
}
finally
{
if (fs != null)
{
fs.Close();
}
if (cluster != null)
{
cluster.Shutdown();
}
if (snn != null)
{
snn.Shutdown();
}
}
}