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Replication Manager on

Replication Manager can replicate HDFS directories, Hive external tables, Impala data, Hive ACID tables, Iceberg tables, Ranger policies and roles for HDFS, Hive, and HBase services, and data in Ozone buckets.

See the following sections for the supported cluster and runtime versions:
Replication policies support the following scenarios:
Kerberos
Replication Manager supports the following replication scenarios when Kerberos authentication is used on a cluster:
  • Secure source to a secure destination.
  • Insecure source to an insecure destination.
  • Insecure source to a secure destination. The following requirements must be met for this scenario:
    • When a destination cluster has multiple source clusters, all the source clusters must either be secure or insecure. Replication Manager does not support a mix of secure and insecure source clusters.
    • The destination cluster must run 7.x or higher.
    • The source cluster must run a compatible version.
    • This replication scenario requires additional configuration. For more information, see Replicating from unsecure to secure clusters .
Transport Layer Security (TLS)
You can use TLS with Replication Manager. Additionally, Replication Manager supports replication scenarios where TLS is enabled for non-Hadoop services (Hive/Impala) and TLS is disabled Hadoop services (such as HDFS,YARN, and MapReduce).
Apache Knox
When is configured with Knox and the source and target clusters are Knox-SSO enabled, you must ensure that you use the port in the peer URL when you add the source and target clusters as peers.

Replicate from CDH and source clusters

The following tables list the source and destination clusters, lowest supported versions of , and the services that are available for each supported cloud provider for CDH and source clusters; ensure that the target database name is the same as the source database name, otherwise issues appear during or after data replication:

Table 1. Replicate data from CDH source clusters
Source cluster Lowest supported source version Lowest supported source Cloudera Runtime version Lowest supported destination cluster version Supported services on Replication Manager
CDH 5

CDH 6

 6.3.0 5.10 7.0.3 HDFS, Sentry to Ranger*, Hive external tables
*To perform Sentry to Ranger replication using HDFS and Hive external table replication policies, you must have installed version 6.3.1 and higher on the source cluster and version 7.1.1 and higher on the target cluster.
Table 2. Replicate data between clusters using same storage
Source cluster Lowest supported source version Lowest supported source Cloudera Runtime version Destination cluster Supported services on Replication Manager
7.1.1 7.1.1
  • HDFS

  • Hive external tables
7.7.1 7.1.8
  • Hive ACID tables*
  • Use APIs to replicate Ozone buckets.
7.7.1 CHF4 7.1.8 Ozone buckets
7.11.3 7.1.9
  • Iceberg tables
  • Ranger policies and roles, and Ranger audit logs in HDFS**
7.11.3 CHF7 7.1.9 SP1 Atlas replication policies***
  • *You can use REPL commands or Replication Manager to replicate Hive ACID tables between 7.1.8 or higher versions using versions 7.7.1 or higher.
  • **You can also create Ranger replication policies on Kerberos-enabled 7.1.8 or higher clusters using 7.7.1 CHF6 and higher, if the Ranger replication feature flag is enabled.
  • ***Replicating Atlas metadata using Hive external table replication policies and Iceberg replication policies, and replicating the metadata and data lineage of all the Hive external tables, Iceberg tables, and any other Atlas supported entities in the source cluster to the target cluster using Atlas replication policies is a technical preview feature. It is not recommended for production deployments. Cloudera recommends that you try this feature in development or test environments. To enable this feature, contact your Cloudera account team.
Table 3. Replicate data between clusters using different storage
Source cluster Lowest supported source version Lowest supported source Cloudera Runtime version Destination cluster Supported services on Replication Manager
7.11.3 CHF1 7.1.9 Replicate the data and metadata for Hive external tables from:
  • source cluster using HDFS to a target cluster using Dell EMC Isilon storage.
  • source cluster using Dell EMC Isilon storage to a target cluster using HDFS.
7.11.3 CHF2 7.1.9 Replicate Hive ACID tables and Iceberg tables from:
  • source cluster using HDFS to a target cluster using Dell EMC Isilon storage.
  • source cluster using Dell EMC Isilon storage to a target cluster using HDFS.
7.11.3 CHF7 7.1.9 SP1 Replicate metadata-only for Ozone storage-backed Hive external tables using Hive external table replication policies. You must replicate the data using Ozone replication policies.

Replicate HDFS and Hive data to cloud storage

Replication Manager supports the following replication scenarios:
  • Replicate to and from Amazon S3 from CDH 5.14+ and version 5.13+.

    Replication Manager does not support S3 as a source or destination when S3 is configured to use SSE-KMS.

  • Replicate to and from Microsoft ADLS Gen1 from CDH 5.13+ and 5.15, 5.16, 6.1+.
  • Replicate to Microsoft ADLS Gen2 (ABFS) from CDH 5.13+ and 6.1+.
  • Supports snapshots from CDH 5.15+ and 5.15+.
  • Replicate HDFS and Hive external tables from 7.1.9 CHF3 and higher clusters using Dell EMC Isilon storage to Cloudera Public Cloud clusters on AWS, Azure, and GCP.
  • Replicate HDFS and Hive external tables from 7.1.9 SP1 and higher to Cloudera Public Cloud clusters on GCP.

Starting in 6.1.0, Replication Manager ignores Hive tables backed by Kudu during replication. The change does not affect functionality since Replication Manager does not support tables backed by Kudu. This change was made to guard against data loss due to how the Hive Metastore, Impala, and Kudu interact.

Replicate from HDP 2 and HDP 3 source clusters

Replicating to and from HDP to 7.x is not supported by Replication Manager. However, you can replicate data using other methods. The following table lists the methods and the supported data replications to clusters that are supported:

Table 4. Replicate data from HDP 2 and HDP 3 source clusters
Lowest supported source version Services that require alternate replication methods
HDP 2.6.5 HDFS.

Use DistCp to replicate data.
HDP 3.1.1 HDFS.

Use DistCp to replicate data.
HDP 3.1.1
  • HBase.

    Use HBase replication to replicate HBase data.

  • Hive external tables. For information to replicate data, contact Cloudera Support.
HDP 3.1.5 Hive ACID tables to Cloudera 7.1.6 and higher clusters. Use REPL commands to replicate data.