Thank you very much, Andrew.
On Sat, Mar 22, 2014 at 7:02 PM, Andrew Wang <andrew.w...@cloudera.com>wrote: > Hi Dhaivat, > > Take a look at DatanodeRegistration and it's parent class DatanodeID. DR is > a Writable, meaning it's a custom serialization format. Hadoop 2 uses > protobuf for the RPC serialization rather than writables (with the > exception of DN data transfer). > > > https://github.com/apache/hadoop-common/blob/branch-1.2/src/hdfs/org/apache/hadoop/hdfs/server/protocol/DatanodeRegistration.java > > https://github.com/apache/hadoop-common/blob/branch-1.2/src/hdfs/org/apache/hadoop/hdfs/protocol/DatanodeID.java > > Best, > Andrew > > > On Sat, Mar 22, 2014 at 1:16 PM, Dhaivat Pandya <dhaivatpan...@gmail.com > >wrote: > > > Hi everyone, > > > > I'm currently working on an application that requires some important > > details about the DataNode registration (w/ NameNode) procedure. > > > > Specifically, I have understood (after Wireshark-ing and looking through > > the Hadoop code) that the DataNode is registered with the NameNode using > a > > single packet which tells the NameNode where the DataNode is "located" > > (i.e. host and port). > > > > However, in this packet, I'm not clear as to what scheme is used to > > serialize the DataNode information. I am running Hadoop 1.2.1. Any > > information will be appreciated. > > > > Thank you, > > > > Dhaivat Pandya > > >
