HBase migration prerequisites

Before migrating HBase data from CDP/HDP to COD CDP Public Cloud, you have to understand and perform all the necessary migration preparation tasks.

  • If you are migrating from CDH, configure Ranger ACLs in CDP corresponding to the HBase ACLs in your existing CDH cluster.

    For more information, see Configure a resource-based service:HBase.

  • Migrate all applications to use the new HBase-Spark connector because the Spark-HBase connector that you were using in CDH or HDP is no longer supported in CDP.

    For more information, see Using the HBase-Spark connector.

  • Ensure that all data has been migrated to a supported encoding type before the migration. For more information, see Removing PREFIX_TREE Data Block Encoding . This step is applicable for HBase 1.x when you are migrating data from HDP 2 or CDH 5. This step is not applicable for HBase 2.x.
  • Ensure that your HFiles are compatible with the version Apache HBase in CDP. For more information, see Validating HFiles.
  • Ensure that you upgrade any external or third-party co-processors manually because they are not automatically upgraded during migration. Ensure that your co-processor classes are compatible with CDP. For more information, see Checking co-processor classes.
  • Review the deprecated APIs and incompatibilities when upgrading from HDP 2.x or CDH 5.x to CDP. For more information, see Deprecation Notices in Apache HBase.
  • Install Cloudera Replication Plugin on the source cluster.
  • On the target COD cluster, make sure ZooKeeper (2181) and RegionServer (16020) ports are opened for the IP addresses of all RegionServers in the source cluster.

    For AWS, this involves editing the Security Groups which are in use by the COD cluster.

  • Ensure that all the RegionServers' hosts in the COD cluster are resolvable by both the IP and name addresses by all the RegionServers' hosts in the source cluster.