Can I add standby namenode into existing Hadoop cluster (with Namenode and Secondary namenode)

0
votes

I have Hadoop 2.7.2 setup where Namenode and Secondary Namenode node run together with few datanodes. After namenode failure (it was just restart) I realized that Secondary namenode is not redundant namenode as I thought.

So question is, can I make my cluster high available and add Standby namenode without deleting existing metadata from namenode?

1
hadoophdfshadoop2

1 Answers

1
votes

You need a Zookeeper cluster, but yes, you can add a namenode to enable High Availability