Cloudera Docs

Feb 24, 2022

This release of the Replication Manager service introduces the following new features.

Creating HDFS and HBase snapshot policies (Tech preview)

A snapshot is a set of metadata information, a point-in-time backup of HDFS files and HBase tables. You can create snapshot policies for HDFS directories and HBase tables in registered classic clusters and SDX Data Lake clusters to take snapshots at regular intervals. Before you create an HDFS snapshot policy for an HDFS directory, you must enable snapshots for the directory in Cloudera Manager.

After a snapshot policy takes a snapshot of the HDFS directory or HBase table, you can perform the following tasks:

  • Restore the snapshot to the original directory or table using the Restore Snapshot option.
  • Restore a directory or table to a different directory or table using the Restore Snapshot as option.

For more information about snapshot policies, see Snapshot policies in Replication Manager.

Override default storage location for replicated Hive external tables in the target cluster

Administrators can override the default storage location for replicated Hive external tables in the target cluster when they create a Hive replication policy.

Before you add another path to override the default storage location, ensure that the following steps are complete in the Ranger UI:

  1. Alter the ranger policy Default: Hive warehouse locations in cm_s3 service to allow the Hive service to access the updated locations of S3 bucket path.

  2. Manually update the Ranger and Sentry permissions.

For more information about editing the Hive External Table Base Directory option in Hive replication policies, see Creating Hive replication policy.

Cannot suspend HBase replication policies

If you create an HBase replication policy, you can no longer suspend the policy. However, you can resume any existing suspended HBase replication policy.

Generate and download diagnostic bundles for replication policies

You can generate and download diagnostic bundles for HDFS and Hive replication policies. You can use the bundle to troubleshoot failed replication jobs or to view replication-specific diagnostic data for a replication policy.

For more information about CDP CLI for HDFS and Hive replication policies, see Managing HDFS replication policies and Managing Hive replication policies.