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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HIVE-12799) Always use Schema Evolution for ACID
Date Thu, 28 Apr 2016 09:12:13 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15095487#comment-15095487
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Lefty Leverenz edited comment on HIVE-12799 at 4/28/16 9:11 AM:
----------------------------------------------------------------

Doc note:  This changes the default value of *hive.exec.schema.evolution* to false in 2.1.0
(edit:  and 2.0.1) and changes the parameter to true for ACID, which is not mentioned in the
parameter description but should be documented in the wiki.  HIVE-12625 adds the parameter
to 1.3.0 with its new default and ACID behavior.

* [Hive Configuration Properties -- Query and DDL Execution | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-QueryandDDLExecution]
* [Hive Transactions -- Configuration | https://cwiki.apache.org/confluence/display/Hive/Hive+Transactions#HiveTransactions-Configuration]

*hive.exec.schema.evolution* was introduced in 2.0.0 by HIVE-11981 with a default value of
true.


was (Author: lefty@hortonworks.com):
Doc note:  This changes the default value of *hive.exec.schema.evolution* to false in 2.1.0
and changes the parameter to true for ACID, which is not mentioned in the parameter description
but should be documented in the wiki.  HIVE-12625 adds the parameter to 1.3.0 with its new
default and ACID behavior.

* [Hive Configuration Properties -- Query and DDL Execution | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-QueryandDDLExecution]
* [Hive Transactions -- Configuration | https://cwiki.apache.org/confluence/display/Hive/Hive+Transactions#HiveTransactions-Configuration]

*hive.exec.schema.evolution* was introduced in 2.0.0 by HIVE-11981 with a default value of
true.

> Always use Schema Evolution for ACID
> ------------------------------------
>
>                 Key: HIVE-12799
>                 URL: https://issues.apache.org/jira/browse/HIVE-12799
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Matt McCline
>            Assignee: Matt McCline
>            Priority: Critical
>              Labels: TODOC1.3, TODOC2.1
>             Fix For: 2.1.0, 2.0.1
>
>         Attachments: HIVE-12799.01.patch, HIVE-12799.02.patch, HIVE-12799.03.patch, HIVE-12799.04.patch
>
>
> Always use Schema Evolution for ACID -- ignore hive.exec.schema.evolution setting.



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