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From "Pradeep Agrawal (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (RANGER-1173) Improve Ranger database schema import logic and make it more robust
Date Tue, 13 Sep 2016 09:21:22 GMT

     [ https://issues.apache.org/jira/browse/RANGER-1173?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Pradeep Agrawal updated RANGER-1173:
    Attachment: RANGER-1173-2.patch

> Improve Ranger database schema import logic and make it more robust
> -------------------------------------------------------------------
>                 Key: RANGER-1173
>                 URL: https://issues.apache.org/jira/browse/RANGER-1173
>             Project: Ranger
>          Issue Type: Bug
>          Components: Ranger
>    Affects Versions: 0.5.0, 0.6.0, 0.7.0
>            Reporter: Pradeep Agrawal
>            Assignee: Pradeep Agrawal
>             Fix For: 0.7.0
>         Attachments: RANGER-1173-2.patch
> Problem Statement: Ranger installation process should handle concurrent import of DB
schema as concurrent execution of db schema files can lead to an inconsistent state of data
and application.
> Proposed Solution : Before importing db schema file; installation process will insert
status in x_db_version_h table with active='N' value. If schema will get created/imported
successfully then status of the schema creation flag will be set to 'Y' else  status row from
x_db_version_h will be deleted. If the Ranger DB schema is being imported then the active
column will have the value 'N' and no other process will be allowed to import that file.

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