/// <summary>Stop the daemon with the given status code</summary>
/// <param name="rc">
/// the status code with which to exit (non-zero
/// should indicate an error)
/// </param>
public virtual void Stop(int rc)
{
this.resultCode = rc;
if (rpcServer != null)
{
rpcServer.Stop();
}
if (httpServer != null)
{
try
{
httpServer.Stop();
}
catch (IOException ioe)
{
Log.Warn("Unable to stop HTTP server for " + this, ioe);
}
}
foreach (Journal j in journalsById.Values)
{
IOUtils.Cleanup(Log, j);
}
if (journalNodeInfoBeanName != null)
{
MBeans.Unregister(journalNodeInfoBeanName);
journalNodeInfoBeanName = null;
}
}
internal virtual void StopMBeans()
{
lock (this)
{
if (mbeanName != null)
{
MBeans.Unregister(mbeanName);
mbeanName = null;
}
}
}
/// <summary>Shut down this instance of the datanode.</summary>
/// <remarks>
/// Shut down this instance of the datanode.
/// Returns only after shutdown is complete.
/// </remarks>
public virtual void Shutdown()
{
shouldRun = false;
if (checkpointThread != null)
{
checkpointThread.Interrupt();
try
{
checkpointThread.Join(10000);
}
catch (Exception)
{
Log.Info("Interrupted waiting to join on checkpointer thread");
Sharpen.Thread.CurrentThread().Interrupt();
}
}
// maintain status
try
{
if (infoServer != null)
{
infoServer.Stop();
infoServer = null;
}
}
catch (Exception e)
{
Log.Warn("Exception shutting down SecondaryNameNode", e);
}
if (nameNodeStatusBeanName != null)
{
MBeans.Unregister(nameNodeStatusBeanName);
nameNodeStatusBeanName = null;
}
try
{
if (checkpointImage != null)
{
checkpointImage.Close();
checkpointImage = null;
}
}
catch (IOException e)
{
Log.Warn("Exception while closing CheckpointStorage", e);
}
if (namesystem != null)
{
namesystem.Shutdown();
namesystem = null;
}
}
public override bool Shutdown()
{
lock (this)
{
Log.Debug("refCount=" + refCount);
if (refCount <= 0)
{
Log.Debug("Redundant shutdown", new Exception());
return(true);
}
// already shutdown
if (--refCount > 0)
{
return(false);
}
if (monitoring)
{
try
{
Stop();
}
catch (Exception e)
{
Log.Warn("Error stopping the metrics system", e);
}
}
allSources.Clear();
allSinks.Clear();
callbacks.Clear();
namedCallbacks.Clear();
if (mbeanName != null)
{
MBeans.Unregister(mbeanName);
mbeanName = null;
}
Log.Info(prefix + " metrics system shutdown complete.");
return(true);
}
}
public virtual void Shutdown()
{
MBeans.Unregister(mxBeanName);
mxBeanName = null;
}
