public virtual void TestNNHealthCheck()
{
MiniDFSCluster cluster = null;
try
{
Configuration conf = new Configuration();
cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(0).NnTopology(MiniDFSNNTopology
.SimpleHATopology()).Build();
NameNodeResourceChecker mockResourceChecker = Org.Mockito.Mockito.Mock <NameNodeResourceChecker
>();
Org.Mockito.Mockito.DoReturn(true).When(mockResourceChecker).HasAvailableDiskSpace
();
cluster.GetNameNode(0).GetNamesystem().SetNNResourceChecker(mockResourceChecker);
NamenodeProtocols rpc = cluster.GetNameNodeRpc(0);
// Should not throw error, which indicates healthy.
rpc.MonitorHealth();
Org.Mockito.Mockito.DoReturn(false).When(mockResourceChecker).HasAvailableDiskSpace
();
try
{
// Should throw error - NN is unhealthy.
rpc.MonitorHealth();
NUnit.Framework.Assert.Fail("Should not have succeeded in calling monitorHealth");
}
catch (HealthCheckFailedException hcfe)
{
GenericTestUtils.AssertExceptionContains("The NameNode has no resources available"
, hcfe);
}
}
finally
{
if (cluster != null)
{
cluster.Shutdown();
}
}
}
