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https://issues.apache.org/jira/browse/HIVE-3999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13574253#comment-13574253
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Mark Grover commented on HIVE-3999:
-----------------------------------
+1 (non-committer)
> Mysql metastore upgrade script will end up with different schema than the
> full schema load
> ------------------------------------------------------------------------------------------
>
> Key: HIVE-3999
> URL: https://issues.apache.org/jira/browse/HIVE-3999
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Reporter: Jarek Jarcec Cecho
> Attachments: mysql_upgrade_issue.patch
>
>
> I've noticed that the file {{hive-schema-0.10.0.mysql.sql}} is creating table
> SDS with following column:
> {code}
> `IS_STOREDASSUBDIRECTORIES` bit(1) NOT NULL,
> {code}
> However the upgrade script {{011-HIVE-3649.mysql.sql}} will create the column
> differently:
> {code}
> ALTER TABLE `SDS` ADD `IS_STOREDASSUBDIRECTORIES` bit(1) ;
> {code}
> Thus user will get slightly different schema each time - once with "NOT NULL"
> and secondly with "NULL" definition.
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