Take a look at the 2.7.3 docs on rolling upgrade for HDFS: http://hadoop.apache.org/docs/r2.7.3/hadoop-project-dist/hadoop-hdfs/HdfsRollingUpgrade.html
I don't think there's similar existing docs for YARN, but your cluster description sounds like you're only using HDFS anyways. On Fri, Jul 28, 2017 at 12:07 AM, Krishna V <[email protected]> wrote: > Hi, > > > Can you give me a step by step process to upgrade Hadoop version from > 2.5.1 to 2.7.3 (Running Hbase 1.2.5) > > We have a cluster setup of > > 3 Journalnodes > > 1 active and 1 Backup namenode > > 15 datanodes > > Please let know the process how to *upgrade without downtime* > > -- > > > *REGARDS* > > *KRISHNA V* > > *contact # 7200834601* > -- busbey
