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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 commented on HIVE-12799:
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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
>
> 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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