Hi all, I have a test ambari cluster. Each node has two interface 1GbE for management and 25GbE high speed for data.
Both interfaces have had DNS/rDNS configured on a central DNS server.
I have gone through this guide http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HdfsMultihoming.html
and enabled those options through ambari.
When adding a new dataNode, I specify its hostname of the management interface. I did few benchmark, and found that the HDFS does not use the 25GbE network at all.
I am wondering if I am still missing something to fully enable multihoming for HDFS?