Attila Magyar created AMBARI-19984:
--------------------------------------

             Summary: ambari-server upgrade is not idempotent
                 Key: AMBARI-19984
                 URL: https://issues.apache.org/jira/browse/AMBARI-19984
             Project: Ambari
          Issue Type: Bug
          Components: ambari-server
            Reporter: Attila Magyar
            Assignee: Attila Magyar


# Upgraded Ambari from 2.4.0 to 2.5.0
# Set the version in metainfo back to 2.4.0
# update metainfo set metainfo_value = '2.4.0' where metainfo_key = 'version';
# Executed ambari-server upgrade again.

Result:

{code}
ERROR: Exception in thread "main" org.apache.ambari.server.AmbariException: 
Exception [EclipseLink-4002] (Eclipse Persistence Services - 
2.6.2.v20151217-774c696): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: org.postgresql.util.PSQLException: ERROR: duplicate key 
value violates unique constraint "pk_permsn_roleauthorization"
Error Code: 0
Call: INSERT INTO permission_roleauthorization (authorization_id, 
permission_id) VALUES (?, ?)
        bind => [2 parameters bound]
        at 
org.apache.ambari.server.upgrade.SchemaUpgradeHelper.executeDMLUpdates(SchemaUpgradeHelper.java:240)
        at 
org.apache.ambari.server.upgrade.SchemaUpgradeHelper.main(SchemaUpgradeHelper.java:430)
Caused by: javax.persistence.RollbackException: Exception [EclipseLink-4002] 
(Eclipse Persistence Services - 2.6.2.v20151217-774c696): 
org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: org.postgresql.util.PSQLException: ERROR: duplicate key 
value violates unique constraint "pk_permsn_roleauthorization"
Error Code: 0
Call: INSERT INTO permission_roleauthorization (authorization_id, 
permission_id) VALUES (?, ?)
        bind => [2 parameters bound]
        at 
org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:159)
        at 
org.apache.ambari.server.orm.AmbariJpaLocalTxnInterceptor.invoke(AmbariJpaLocalTxnInterceptor.java:153)
        at 
org.apache.ambari.server.upgrade.AbstractUpgradeCatalog.addAuthorizationToRole(AbstractUpgradeCatalog.java:887)
        at 
org.apache.ambari.server.upgrade.AbstractUpgradeCatalog.addRoleAuthorization(AbstractUpgradeCatalog.java:847)
        at 
org.apache.ambari.server.upgrade.UpgradeCatalog250.addManageServiceAutoStartPermissions(UpgradeCatalog250.java:907)
        at 
org.apache.ambari.server.upgrade.UpgradeCatalog250.executeDMLUpdates(UpgradeCatalog250.java:172)
        at 
org.apache.ambari.server.upgrade.AbstractUpgradeCatalog.upgradeData(AbstractUpgradeCatalog.java:952)
        at 
org.apache.ambari.server.upgrade.SchemaUpgradeHelper.executeDMLUpdates(SchemaUpgradeHelper.java:237)
        ... 1 more
Caused by: Exception [EclipseLink-4002] (Eclipse Persistence Services - 
2.6.2.v20151217-774c696): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: org.postgresql.util.PSQLException: ERROR: duplicate key 
value violates unique constraint "pk_permsn_roleauthorization"
Error Code: 0
Call: INSERT INTO permission_roleauthorization (authorization_id, 
permission_id) VALUES (?, ?)
        bind => [2 parameters bound]
        at 
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:340)
        at 
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.processExceptionForCommError(DatabaseAccessor.java:1620)
        at 
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:900)
        at 
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeNoSelect(DatabaseAccessor.java:964)
        at 
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:633)
        at 
org.eclipse.persistence.internal.databaseaccess.ParameterizedSQLBatchWritingMechanism.executeBatch(ParameterizedSQLBatchWritingMechanism.java:149)
        at 
org.eclipse.persistence.internal.databaseaccess.ParameterizedSQLBatchWritingMechanism.executeBatchedStatements(ParameterizedSQLBatchWritingMechanism.java:134)
        at 
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.writesCompleted(DatabaseAccessor.java:1845)
        at 
org.eclipse.persistence.internal.sessions.AbstractSession.writesCompleted(AbstractSession.java:4300)
        at 
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.writesCompleted(UnitOfWorkImpl.java:5592)
        at 
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.acquireWriteLocks(UnitOfWorkImpl.java:1646)
        at 
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitTransactionAfterWriteChanges(UnitOfWorkImpl.java:1614)
        at 
org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.commitRootUnitOfWork(RepeatableWriteUnitOfWork.java:285)
        at 
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitAndResume(UnitOfWorkImpl.java:1169)
        at 
org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:134)
        ... 8 more
Caused by: org.postgresql.util.PSQLException: ERROR: duplicate key value 
violates unique constraint "pk_permsn_roleauthorization"
        at 
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2161)
        at 
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1890)
        at 
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255)
        at 
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:559)
        at 
org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:417)
        at 
org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:363)
        at 
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:892)
        ... 20 more
{code}



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