-Re: Multiple nic interfaces on datanode
Siddharth Tiwari 2013-11-29, 10:23
Hi Team/ Adam
Thanks for the response
When you say to have rack awareness script on jobtracker, you mean I must have the script in jobtracker machines as well ? I am using jt ha, where I am using mr2 binaries for namenode ha and mr1 for jt ha. But do I need to put the script in all four machines or jut Nn
Sent from my iPhone
> On Nov 29, 2013, at 6:58 AM, "Adam Kawa" <[EMAIL PROTECTED]> wrote:
>> I have 2 nics on my datanodes, is it possible to used the one dedicated for replication and other for all other comunication i.e with jt and namenodes ?
> Please correct me, I am wrong, but I have never seen a support for that in Hadoop. DataNodes uses limited number of threads for balancing (afaik, 5 maximally + dfs.datanode.balance.bandwidthPerSec), so this way resources used for balancing can be limited.
>> Also eventhough I am using rackawareness script and dfsreport shows the racks jobtracker shows all tasktracker in default rack, how to correct that.
> We switched to YARN recently, so it is difficult for me to check it now.
> Do you have rack-awareness script deployed on the JobTracker machine?