[JBoss JIRA] (TEIID-3995) SAP HANA materialization:function loadMatView with argument invalidate set to true problem
5:57 p.m.
[
https://issues.jboss.org/browse/TEIID-3995?page=com.atlassian.jira.plugin...
]
Jan Stastny commented on TEIID-3995:
------------------------------------
My testcase (using h2 example, as I reproduced the issue even with h2):
{code:java}
@Test
public void externalLongTtlExplicitLoadTest()throws Exception{
Connection connection = TestUtils.getTeiidConnection("h2");
try{
Statement statement = connection.createStatement();
ResultSet rs = statement.executeQuery("SELECT total_amount FROM external_long_ttl
WHERE customer_id=1;");
Assert.assertTrue(rs.next(),"SELECT statement on external materialized view should
return some rows.");
int originalAmount = rs.getInt(1);
statement.execute("UPDATE dv_matviews_orders SET amount=amount+50 WHERE
customer_id=1");
ResultSet rs2 = statement.executeQuery("SELECT total_amount FROM external_long_ttl
WHERE customer_id=1");
Assert.assertTrue(rs2.next(),"SELECT statement on external materialized view
should return some rows.");
int currentAmount = rs2.getInt(1);
Assert.assertTrue(originalAmount==currentAmount,"Data in materialized table
shouldn't have been updated yet.");
statement.execute("exec
SYSADMIN.loadMatView(schemaName=>'View',viewname=>'external_long_ttl',
invalidate=>'true')");
ResultSet rs3 = statement.executeQuery("SELECT total_amount FROM external_long_ttl
WHERE customer_id=1");
Assert.assertTrue(rs3.next(),"SELECT statement on external materialized view
should return some rows.");
int updatedAmount = rs3.getInt(1);
Assert.assertTrue(originalAmount<updatedAmount,"Data in materialized table
should have been updated already.");
statement.execute("UPDATE dv_matviews_orders SET amount=amount+50 WHERE
customer_id=1");
statement.execute("exec
SYSADMIN.loadMatView(schemaName=>'View',viewname=>'external_long_ttl',
invalidate=>'true')");
ResultSet rs4 = statement.executeQuery("SELECT total_amount FROM external_long_ttl
WHERE customer_id=1");
Assert.assertTrue(rs4.next(),"SELECT statement on external materialized view
should return some rows.");
int updatedAmount2 = rs4.getInt(1);
Assert.assertTrue(updatedAmount<updatedAmount2,"Data in materialized table
should have been updated already.");
}finally{
connection.close();
}
}
{code}
Server log for this testcase is in attachement.
SAP HANA materialization:function loadMatView with argument
invalidate set to true problem
------------------------------------------------------------------------------------------
Key: TEIID-3995
URL: https://issues.jboss.org/browse/TEIID-3995
Project: Teiid
Issue Type: Bug
Components: Query Engine
Affects Versions: 8.12.x
Reporter: Jan Stastny
Assignee: Steven Hawkins
There appears to be an issue with loadMatView function.
Specifically when the function is invoked with invalidate=>'true' argument,
when it is expected, that invocation of this function invalidates the current contents of
the materialized view until the initiated load is completed and new data are populated.
But when calling this function as described, an error occurs:
{code:plain}
TEIID20001 The modeled datatype integer for column 0 doesn't match the runtime type
"org.teiid.core.types.ArrayImpl". Please ensure that the column's modeled
datatype matches the expected data.
{code}
Please note, that there is no column of type array in my schema.
There is declaration of the view:
{code:sql}
CREATE VIEW external_long_ttl (
customer_id integer NOT NULL,
total_amount integer
)
{code}
and the query used to load the view:
{code:sql}
"teiid_rel:MATVIEW_LOAD_SCRIPT" 'INSERT INTO
dv_matviews_mat_view_stage(customer_id,total_amount) SELECT CONVERT(c.id,integer) AS
customer_id, CONVERT(SUM(o.amount),integer) AS total_amount FROM dv_matviews_customers c
INNER JOIN dv_matviews_orders o ON c.id = o.customer_id GROUP BY c.id;',
{code}
Complete definition of the view is:
{code:sql}
CREATE VIEW external_long_ttl (
customer_id integer NOT NULL,
total_amount integer
) OPTIONS (
MATERIALIZED 'TRUE',
UPDATABLE 'FALSE',
MATERIALIZED_TABLE 'Source.JSTASTNY.dv_matviews_mat_view',
"teiid_rel:ALLOW_MATVIEW_MANAGEMENT" 'true',
"teiid_rel:MATVIEW_STATUS_TABLE"
'Source.JSTASTNY.dv_matviews_statustable',
"teiid_rel:ON_VDB_START_SCRIPT" 'MERGE INTO
dv_matviews_check_table(id,vdb_create) SELECT id, vdb_create+1 FROM
dv_matviews_check_table WHERE id=''external_long_ttl'';',
"teiid_rel:ON_VDB_DROP_SCRIPT" 'MERGE INTO
dv_matviews_check_table(id,vdb_drop) SELECT id, vdb_drop+1 FROM dv_matviews_check_table
WHERE id=''external_long_ttl'';',
"teiid_rel:MATVIEW_LOAD_SCRIPT" 'INSERT INTO
dv_matviews_mat_view_stage(customer_id,total_amount) SELECT CONVERT(c.id,integer) AS
customer_id, CONVERT(SUM(o.amount),integer) AS total_amount FROM dv_matviews_customers c
INNER JOIN dv_matviews_orders o ON c.id = o.customer_id GROUP BY c.id;',
"teiid_rel:MATVIEW_BEFORE_LOAD_SCRIPT" 'exec
Source.native(''truncate table dv_matviews_mat_view_stage'');MERGE INTO
dv_matviews_check_table(id,before_load) SELECT id, before_load+1 FROM
dv_matviews_check_table WHERE id=''external_long_ttl'';',
"teiid_rel:MATVIEW_AFTER_LOAD_SCRIPT" 'exec
Source.native(''RENAME TABLE dv_matviews_mat_view_stage TO
dv_matviews_mat_view_temp'');exec Source.native(''RENAME TABLE
dv_matviews_mat_view TO dv_matviews_mat_view_stage'');exec
Source.native(''RENAME TABLE dv_matviews_mat_view_temp TO
dv_matviews_mat_view'');MERGE INTO dv_matviews_check_table(id,after_load) SELECT
id, after_load+1 FROM dv_matviews_check_table WHERE
id=''external_long_ttl'';',
"teiid_rel:MATVIEW_ONERROR_ACTION" 'WAIT',
"teiid_rel:MATVIEW_TTL" 20000
) AS SELECT CONVERT(c.id,integer) AS customer_id, CONVERT(SUM(o.amount),integer)
AS total_amount FROM dv_matviews_customers c INNER JOIN dv_matviews_orders o ON c.id =
o.customer_id GROUP BY c.id;
{code}
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Jan Stastny (JIRA)