Hi Asanjar,
My understanding is that it returns serialized BlockLocation instances which
holds the location information for an HDFS block. It contains hostnames and
hostnames:ports of datanodes apart from some other info.
I am a newbie in Hadoop, somebody may connfirm on this.
Regards,Pravin
On Friday, 8 May 2015 10:21 PM, MrAsanjar . <[email protected]> wrote:
hi all,
I have an hdfs question, my understanding is, namenode sends a list of
datanodes to hadoop client to send data blocks based on replication setting.
The question is, does the list from namenode has IP addresses or hostnames, or
both of the datanodes.
NN -------> Client ----> DN1 ------> DN2 ------> DN3
