/// <exception cref="Com.Google.Protobuf.ServiceException"/>
public virtual NamenodeProtocolProtos.IsUpgradeFinalizedResponseProto IsUpgradeFinalized
(RpcController controller, NamenodeProtocolProtos.IsUpgradeFinalizedRequestProto
request)
{
bool isUpgradeFinalized;
try
{
isUpgradeFinalized = impl.IsUpgradeFinalized();
}
catch (IOException e)
{
throw new ServiceException(e);
}
return((NamenodeProtocolProtos.IsUpgradeFinalizedResponseProto)NamenodeProtocolProtos.IsUpgradeFinalizedResponseProto
.NewBuilder().SetIsUpgradeFinalized(isUpgradeFinalized).Build());
}
/// <exception cref="System.IO.IOException"/>
private int DoRun()
{
NamenodeProtocol proxy = CreateNNProtocolProxy();
NamespaceInfo nsInfo;
bool isUpgradeFinalized;
try
{
nsInfo = proxy.VersionRequest();
isUpgradeFinalized = proxy.IsUpgradeFinalized();
}
catch (IOException ioe)
{
Log.Fatal("Unable to fetch namespace information from active NN at " + otherIpcAddr
+ ": " + ioe.Message);
if (Log.IsDebugEnabled())
{
Log.Debug("Full exception trace", ioe);
}
return(ErrCodeFailedConnect);
}
if (!CheckLayoutVersion(nsInfo))
{
Log.Fatal("Layout version on remote node (" + nsInfo.GetLayoutVersion() + ") does not match "
+ "this node's layout version (" + HdfsConstants.NamenodeLayoutVersion + ")");
return(ErrCodeInvalidVersion);
}
System.Console.Out.WriteLine("=====================================================\n"
+ "About to bootstrap Standby ID " + nnId + " from:\n" + " Nameservice ID: "
+ nsId + "\n" + " Other Namenode ID: " + otherNNId + "\n" + " Other NN's HTTP address: "
+ otherHttpAddr + "\n" + " Other NN's IPC address: " + otherIpcAddr + "\n" +
" Namespace ID: " + nsInfo.GetNamespaceID() + "\n" + " Block pool ID: "
+ nsInfo.GetBlockPoolID() + "\n" + " Cluster ID: " + nsInfo.GetClusterID
() + "\n" + " Layout version: " + nsInfo.GetLayoutVersion() + "\n" + " isUpgradeFinalized: "
+ isUpgradeFinalized + "\n" + "====================================================="
);
NNStorage storage = new NNStorage(conf, dirsToFormat, editUrisToFormat);
if (!isUpgradeFinalized)
{
// the remote NameNode is in upgrade state, this NameNode should also
// create the previous directory. First prepare the upgrade and rename
// the current dir to previous.tmp.
Log.Info("The active NameNode is in Upgrade. " + "Prepare the upgrade for the standby NameNode as well."
);
if (!DoPreUpgrade(storage, nsInfo))
{
return(ErrCodeAlreadyFormatted);
}
}
else
{
if (!Format(storage, nsInfo))
{
// prompt the user to format storage
return(ErrCodeAlreadyFormatted);
}
}
// download the fsimage from active namenode
int download = DownloadImage(storage, proxy);
if (download != 0)
{
return(download);
}
// finish the upgrade: rename previous.tmp to previous
if (!isUpgradeFinalized)
{
DoUpgrade(storage);
}
return(0);
}