Rolling Upgrade Guide
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Upgrade HDFS JournalNodes

Upgrade each JournalNode process one by one. The order does not matter.

Stop, switch, and start each JournalNode:

su - hdfs -c "/usr/hdp/current/hadoop-hdfs-journalnode/../hadoop/sbin/hadoop-daemon.sh stop journalnode"

hdp-select set hadoop-hdfs-journalnode 2.2.9.0-$BUILD

su - hdfs -c "/usr/hdp/current/hadoop-hdfs-journalnode/../hadoop/sbin/hadoop-daemon.sh start journalnode"