/* the same as superclass's localTarget, but with the more specfic NN type */
protected override HAServiceTarget DataToTarget(byte[] data)
{
HAZKInfoProtos.ActiveNodeInfo proto;
try
{
proto = HAZKInfoProtos.ActiveNodeInfo.ParseFrom(data);
}
catch (InvalidProtocolBufferException)
{
throw new RuntimeException("Invalid data in ZK: " + StringUtils.ByteToHexString(data
));
}
NNHAServiceTarget ret = new NNHAServiceTarget(conf, proto.GetNameserviceId(), proto
.GetNamenodeId());
IPEndPoint addressFromProtobuf = new IPEndPoint(proto.GetHostname(), proto.GetPort
());
if (!addressFromProtobuf.Equals(ret.GetAddress()))
{
throw new RuntimeException("Mismatched address stored in ZK for " + ret + ": Stored protobuf was "
+ proto + ", address from our own " + "configuration for this NameNode was " +
ret.GetAddress());
}
ret.SetZkfcPort(proto.GetZkfcPort());
return(ret);
}
private DFSZKFailoverController(Configuration conf, NNHAServiceTarget localTarget
)
: base(conf, localTarget)
{
this.localNNTarget = localTarget;
// Setup ACLs
adminAcl = new AccessControlList(conf.Get(DFSConfigKeys.DfsAdmin, " "));
Log.Info("Failover controller configured for NameNode " + localTarget);
}
public static Org.Apache.Hadoop.Hdfs.Tools.DFSZKFailoverController Create(Configuration
conf)
{
Configuration localNNConf = DFSHAAdmin.AddSecurityConfiguration(conf);
string nsId = DFSUtil.GetNamenodeNameServiceId(conf);
if (!HAUtil.IsHAEnabled(localNNConf, nsId))
{
throw new HadoopIllegalArgumentException("HA is not enabled for this namenode.");
}
string nnId = HAUtil.GetNameNodeId(localNNConf, nsId);
if (nnId == null)
{
string msg = "Could not get the namenode ID of this node. " + "You may run zkfc on the node other than namenode.";
throw new HadoopIllegalArgumentException(msg);
}
NameNode.InitializeGenericKeys(localNNConf, nsId, nnId);
DFSUtil.SetGenericConf(localNNConf, nsId, nnId, ZkfcConfKeys);
NNHAServiceTarget localTarget = new NNHAServiceTarget(localNNConf, nsId, nnId);
return(new Org.Apache.Hadoop.Hdfs.Tools.DFSZKFailoverController(localNNConf, localTarget
));
}
