By default, Cloudera Manager retains Replication Manager logs for 90 days. You can
change the number of days Cloudera Manager retains logs or disable log retention
completely.
Go to the Cloudera Manager > HDFS > Configuration section.
In the Cloudera Manager Admin Console, search for the following property: Backup and Disaster Log Retention.
Enter the number of days you want to retain logs for. To disable log retention, enter
-1.