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https://issues.apache.org/jira/browse/AMBARI-21998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Lysnichenko updated AMBARI-21998:
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Component/s: ambari-server
> Ambari upgrade don't delete stale constraints
> ---------------------------------------------
>
> Key: AMBARI-21998
> URL: https://issues.apache.org/jira/browse/AMBARI-21998
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Reporter: Dmitry Lysnichenko
> Assignee: Dmitry Lysnichenko
> Priority: Critical
>
> During Ambari upgrade from 2.2.2 to 2.5 I discovered that some UNIQUE
> constraints are definned without name in older Ambari versions, and then
> altered by name in UpgadeCatalogs/newer DDLs.
> For example:
> Ambari 2.2.2
> https://github.com/apache/ambari/blob/branch-2.2.2/ambari-server/src/main/resources/Ambari-DDL-Postgres-CREATE.sql
> {code} UNIQUE (ldap_user, user_name));{code}
> Ambari-2.4.0
> https://github.com/apache/ambari/blob/branch-2.4/ambari-server/src/main/resources/Ambari-DDL-Postgres-CREATE.sql#L288
> {code} CONSTRAINT UNQ_users_0 UNIQUE (user_name, user_type)){code}
> As a result, during upgrade from Ambari 2.2.2 to Ambari 2.5.0, the stale
> unique constraint with default name is not deleted.
> That will reproduce on Postgres for any upgrade path that includes these
> versions.
> {code}ambari=# \d+ users
> Table "ambari.users"
> Column | Type | Modifiers
> | Storage | Description
> -----------------------+-----------------------------+------------------------------------+----------+-------------
> user_id | integer | not null
> | plain |
> principal_id | bigint | not null
> | plain |
> ldap_user | integer | not null default 0
> | plain |
> user_name | character varying(255) | not null
> | extended |
> create_time | timestamp without time zone | default now()
> | plain |
> user_password | character varying(255) |
> | extended |
> active | integer | not null default 1
> | plain |
> active_widget_layouts | character varying(1024) | default NULL::character
> varying | extended |
> user_type | character varying(255) | default
> 'LOCAL'::character varying | extended |
> Indexes:
> "users_pkey" PRIMARY KEY, btree (user_id)
> "unq_users_0" UNIQUE, btree (user_name, user_type)
> "users_ldap_user_key" UNIQUE, btree (ldap_user, user_name)
> Foreign-key constraints:
> "fk_users_principal_id" FOREIGN KEY (principal_id) REFERENCES
> adminprincipal(principal_id)
> Referenced by:
> TABLE "members" CONSTRAINT "fk_members_user_id" FOREIGN KEY (user_id)
> REFERENCES users(user_id)
> Has OIDs: no
> {code}
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