question Re: How to sync schemas from one region to another in Support Questions

How to sync schemas from one region to another

prakodi — Fri, 06 Jan 2023 20:13:48 GMT

Hi All,

Need advice, how we can export all the DDL of one scheme from Hive ( from QA region, a schema with around 2000 tables) to Dev or ACPT region, only DDL's needed to be in sync , not worried about the data, so do we have any option or script to import / export all the DDL's from one region to another region in one go, please suggest, thank you.

Re: How to sync schemas from one region to another

vijayshc — Sat, 07 Jan 2023 07:32:26 GMT

You can use BDR to sync only dictionary

Re: How to sync schemas from one region to another

tj2007 — Mon, 09 Jan 2023 05:07:59 GMT

Hello @prakodi ,

You can use Hive Replication to migrate the schema from one cluster to another

https://docs.cloudera.com/cdp-private-cloud-base/7.1.6/replication-manager/topics/rm-dc-hiveimpala-replication.html

Hope this helps,

Tarun

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Re: How to sync schemas from one region to another

prakodi — Tue, 10 Jan 2023 15:47:50 GMT

Hi,

we need to sync only few schemas, this solution is completely moving all the metastore from one region to another region. Just for one schema which contains 100's of tables, we want to sync the DDL's to another region.

Re: How to sync schemas from one region to another

tj2007 — Wed, 11 Jan 2023 06:16:27 GMT

Hello @prakodi,

Thanks for your response!

You do have the option to select a single database in the general tab while creating hive replication policies. In the Replicate All parameter you can mention the single database.

Refer to this article:

https://docs.cloudera.com/cdp-private-cloud-base/7.1.6/replication-manager/topics/rm-dc-configuring-replication-of-hiveimpala-data.html

Hope this helps,

Tarun

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Re: How to sync schemas from one region to another

prakodi — Thu, 12 Jan 2023 00:49:17 GMT

Hi Tarun,

This solutions looks fine, but unfortunately we are still using CDH6.3 version only, so we dont use Ranger, so is there any option for CHD 6.3 version ?

Thanks,

Re: How to sync schemas from one region to another

tj2007 — Mon, 16 Jan 2023 07:36:33 GMT

Hello @prakodi,

For CDH 6.3, you can review this article

https://docs.cloudera.com/documentation/enterprise/6/6.3/topics/cm_bdr_hive_replication.html

Hope this helps,

Tarun

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