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Rajeshhadoop
Rajeshhadoop
Silver ⭐️⭐️⭐️
March 1, 2022
Solved

Hive3 upgrade

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

Chella
ChellaAnswer
Gold ⭐️
March 10, 2022

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

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5 replies

Chella
Gold ⭐️
Chella
Gold ⭐️
March 1, 2022

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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Rajeshhadoop
RajeshhadoopAuthor
Silver ⭐️⭐️⭐️
March 3, 2022

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

Translate
Chella
Gold ⭐️
ChellaAnswer
Gold ⭐️
March 10, 2022

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!
Was your question answered? Make sure to mark the answer as the accepted solution.
If you find a reply useful, say thanks by clicking on the thumbs up button.

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VidyaSargur
Community Manager
VidyaSargur
Community Manager
March 14, 2022

@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.  

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Regards, Vidya Sargur, Community Manager Was your question answered? Make sure to mark the answer as the accepted solution. If you find a reply useful, say thanks by clicking on the thumbs up button.
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