Data Replication You must understand some of the requirements about data replication. Cloudera License Requirements for ReplicationWhile using Replication Manager service, you must have the license to perform your tasks. Replicating Directories with Thousands of Files and SubdirectoriesYou can increase the heap size in the hadoop-env.sh file before you replicate the data in directories that contain thousands of files and subdirectories.Replication Manager Log RetentionBy default, Cloudera Manager retains Replication Manager logs for 90 days. You can change the number of days Cloudera Manager retains logs for or disable log retention completely.Replicating from Unsecure to Secure ClustersYou can use Replication Manager to replicate data from an unsecure cluster, one that does not use Kerberos authentication, to a secure cluster, a cluster that uses Kerberos. Note that the reverse is not true.
