question Re: Hive3 upgrade in Support Questions

Hive3 upgrade

Rajeshhadoop — Tue, 01 Mar 2022 11:34:57 GMT

Planning to migrate to Hive3 on CDH and CDP private base.

What are the feature wise changes happened from hive2 to hive3

and also point out the risk areas for hive3

Re: Hive3 upgrade

Chella — Tue, 01 Mar 2022 14:15:13 GMT

Hello Rajesh,

We understand that you are planning to migrate to Hive3 on CDH and CDP private base and you are looking for feature wise changes happened from hive2 to hive3. You would also like to know about the any potential risk areas. Please review the below articles and let us know if that helps.

https://docs.cloudera.com/cdp-private-cloud-upgrade/latest/upgrade-cdh/topics/ug_cdh_hive_preupgrade_tasks.html
https://docs.cloudera.com/cdp-private-cloud-base/7.1.3/hive-introduction/topics/hive-apache-hive-3-architectural-overview.html
https://docs.cloudera.com/HDPDocuments/HDP3/HDP-3.0.1/using-hiveql/content/hive_hive_3_tables.html
https://docs.cloudera.com/HDPDocuments/HDP3/HDP-3.1.5/hive-overview/content/hive_upgrade_changes.html
https://docs.cloudera.com/cdp-private-cloud-upgrade/latest/upgrade-cdh/topics/hive-unsupported.html?

Cheers!
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Re: Hive3 upgrade

Rajeshhadoop — Thu, 03 Mar 2022 04:13:00 GMT

Thanks for the update.

Do we have any changes regarding External or internal tables?

Any limitations for no.of rows/partitions or code/syntax changes

Re: Hive3 upgrade

Rajeshhadoop — Tue, 08 Mar 2022 04:42:06 GMT

Thanks for the update.

Do we have any changes regarding External or internal tables?

Any limitations for no.of rows/partitions or code/syntax changes

Re: Hive3 upgrade

Chella — Thu, 10 Mar 2022 10:17:36 GMT

Hello @Rajeshhadoop
Do we have any changes regarding External or internal tables?
Yes in Hive3 by default all Internal/Managed tables are ACID and External tables are Non-Transactional/Non-ACID tables.

https://docs.cloudera.com/cdp-private-cloud-base/7.1.6/using-hiveql/topics/hive_hive_3_tables.html

https://docs.cloudera.com/cdp-private-cloud-base/7.1.3/securing-hive/topics/hive_external_table_access.html

Any limitations for no.of rows/partitions or code/syntax changes
No. In Hive 3 you will many additional features.

https://docs.cloudera.com/cdp-private-cloud-upgrade/latest/upgrade/topics/hive-apache-hive-3-architectural-overview.html

https://docs.cloudera.com/runtime/7.2.6/hive-introduction/topics/hive_whats_new_in_this_release_hive.html

Cheers!
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If you find a reply useful, say thanks by clicking on the thumbs up button.

Re: Hive3 upgrade

VidyaSargur — Mon, 14 Mar 2022 08:23:47 GMT

@Rajeshhadoop, Has the reply helped resolve your issue? If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future.