Downgrade each JournalNode process, one by one. The order does not matter.

Stop the JournalNode process, switch to the previous version, and start the process:

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

hdp-select set hadoop-hdfs-journalnode 2.2.0.0-2041

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

See Appendix A for HDFS validation tasks.

Continue with the next downgrade step.