/// <exception cref="System.Exception"/>
public virtual void TestTimeoutMetric()
{
Configuration conf = new HdfsConfiguration();
Path path = new Path("/test");
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(2).Build();
IList <FSDataOutputStream> streams = Lists.NewArrayList();
try
{
FSDataOutputStream @out = cluster.GetFileSystem().Create(path, (short)2);
DataNodeFaultInjector injector = Org.Mockito.Mockito.Mock <DataNodeFaultInjector>(
);
Org.Mockito.Mockito.DoThrow(new IOException("mock IOException")).When(injector).WriteBlockAfterFlush
();
DataNodeFaultInjector.instance = injector;
streams.AddItem(@out);
@out.WriteBytes("old gs data\n");
@out.Hflush();
/* Test the metric. */
MetricsRecordBuilder dnMetrics = MetricsAsserts.GetMetrics(cluster.GetDataNodes()
[0].GetMetrics().Name());
MetricsAsserts.AssertCounter("DatanodeNetworkErrors", 1L, dnMetrics);
/* Test JMX datanode network counts. */
MBeanServer mbs = ManagementFactory.GetPlatformMBeanServer();
ObjectName mxbeanName = new ObjectName("Hadoop:service=DataNode,name=DataNodeInfo"
);
object dnc = mbs.GetAttribute(mxbeanName, "DatanodeNetworkCounts");
string allDnc = dnc.ToString();
NUnit.Framework.Assert.IsTrue("expected to see loopback address", allDnc.IndexOf(
"127.0.0.1") >= 0);
NUnit.Framework.Assert.IsTrue("expected to see networkErrors", allDnc.IndexOf("networkErrors"
) >= 0);
}
finally
{
IOUtils.Cleanup(Log, Sharpen.Collections.ToArray(streams, new IDisposable[0]));
if (cluster != null)
{
cluster.Shutdown();
}
DataNodeFaultInjector.instance = new DataNodeFaultInjector();
}
}
public static void Set(DataNodeFaultInjector injector)
{
instance = injector;
}
