/// <exception cref="System.IO.IOException"/>
internal static ClientDatanodeProtocolPB CreateClientDatanodeProtocolProxy(DatanodeID
datanodeid, Configuration conf, int socketTimeout, bool connectToDnViaHostname,
LocatedBlock locatedBlock)
{
string dnAddr = datanodeid.GetIpcAddr(connectToDnViaHostname);
IPEndPoint addr = NetUtils.CreateSocketAddr(dnAddr);
if (Log.IsDebugEnabled())
{
Log.Debug("Connecting to datanode " + dnAddr + " addr=" + addr);
}
// Since we're creating a new UserGroupInformation here, we know that no
// future RPC proxies will be able to re-use the same connection. And
// usages of this proxy tend to be one-off calls.
//
// This is a temporary fix: callers should really achieve this by using
// RPC.stopProxy() on the resulting object, but this is currently not
// working in trunk. See the discussion on HDFS-1965.
Configuration confWithNoIpcIdle = new Configuration(conf);
confWithNoIpcIdle.SetInt(CommonConfigurationKeysPublic.IpcClientConnectionMaxidletimeKey
, 0);
UserGroupInformation ticket = UserGroupInformation.CreateRemoteUser(locatedBlock.
GetBlock().GetLocalBlock().ToString());
ticket.AddToken(locatedBlock.GetBlockToken());
return(CreateClientDatanodeProtocolProxy(addr, ticket, confWithNoIpcIdle, NetUtils
.GetDefaultSocketFactory(conf), socketTimeout));
}
/// <summary>Constructor.</summary>
/// <param name="datanodeid">Datanode to connect to.</param>
/// <param name="conf">Configuration.</param>
/// <param name="socketTimeout">Socket timeout to use.</param>
/// <param name="connectToDnViaHostname">connect to the Datanode using its hostname</param>
/// <exception cref="System.IO.IOException"/>
public ClientDatanodeProtocolTranslatorPB(DatanodeID datanodeid, Configuration conf
, int socketTimeout, bool connectToDnViaHostname)
{
string dnAddr = datanodeid.GetIpcAddr(connectToDnViaHostname);
IPEndPoint addr = NetUtils.CreateSocketAddr(dnAddr);
if (Log.IsDebugEnabled())
{
Log.Debug("Connecting to datanode " + dnAddr + " addr=" + addr);
}
rpcProxy = CreateClientDatanodeProtocolProxy(addr, UserGroupInformation.GetCurrentUser
(), conf, NetUtils.GetDefaultSocketFactory(conf), socketTimeout);
}