/// <summary>Make sure the client retries when the active NN is in safemode</summary>
/// <exception cref="System.Exception"/>
public virtual void TestClientRetrySafeMode()
{
IDictionary <Path, bool> results = Collections.SynchronizedMap(new Dictionary <Path
, bool>());
Path test = new Path("/test");
// let nn0 enter safemode
NameNodeAdapter.EnterSafeMode(nn0, false);
FSNamesystem.SafeModeInfo safeMode = (FSNamesystem.SafeModeInfo)Whitebox.GetInternalState
(nn0.GetNamesystem(), "safeMode");
Whitebox.SetInternalState(safeMode, "extension", Sharpen.Extensions.ValueOf(30000
));
Log.Info("enter safemode");
new _Thread_133(this, test, results).Start();
// make sure the client's call has actually been handled by the active NN
NUnit.Framework.Assert.IsFalse("The directory should not be created while NN in safemode"
, fs.Exists(test));
Sharpen.Thread.Sleep(1000);
// let nn0 leave safemode
NameNodeAdapter.LeaveSafeMode(nn0);
Log.Info("leave safemode");
lock (this)
{
while (!results.Contains(test))
{
Sharpen.Runtime.Wait(this);
}
NUnit.Framework.Assert.IsTrue(results[test]);
}
}
/// <returns>
/// the number of blocks marked safe by safemode, or -1
/// if safemode is not running.
/// </returns>
public static int GetSafeModeSafeBlocks(NameNode nn)
{
FSNamesystem.SafeModeInfo smi = nn.GetNamesystem().GetSafeModeInfoForTests();
if (smi == null)
{
return(-1);
}
return(smi.blockSafe);
}
public SafeModeException(string text, FSNamesystem.SafeModeInfo mode)
: base(text + ". Name node is in safe mode.\n" + mode.GetTurnOffTip())
{
}