6:52 a.m.
Filip Nguyen created TEIID-2525:
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Summary: Prefetch doesn't work when clause contains LIMIT keyword
Key: TEIID-2525
URL: https://issues.jboss.org/browse/TEIID-2525
Project: Teiid
Issue Type: Bug
Affects Versions: 8.4, 7.7.7
Reporter: Filip Nguyen
Assignee: Steven Hawkins
Priority: Critical
Doesn't work both in the newest Teiid and the 7.x version.
Not sure how critical this is. When setting the prefetch via JDBC and using FORWARD_ONLY
result set [1] I am getting exceptions [2] when using LIMIT clause in the SQL.
{code:java}
TeiidDataSource ds = new TeiidDataSource();
ds.setDatabaseName(vdb);
ds.setUser("user");
ds.setPassword("user");
ds.setServerName(host);
ds.setPortNumber(Integer.valueOf(port));
ds.setFetchSize(10);
....
Statement statement = connection.createStatement(ResultSet.TYPE_FORWARD_ONLY,
ResultSet.CONCUR_READ_ONLY);
{code}
[2]
{code:java}
Eorg.teiid.jdbc.TeiidSQLException: ASSERTION FAILED: expected reference to be not null
at org.teiid.jdbc.TeiidSQLException.create(TeiidSQLException.java:113)
at org.teiid.jdbc.TeiidSQLException.create(TeiidSQLException.java:70)
at org.teiid.jdbc.ResultSetImpl.processBatch(ResultSetImpl.java:402)
at org.teiid.jdbc.ResultSetImpl.requestBatch(ResultSetImpl.java:375)
at org.teiid.jdbc.BatchResults.requestBatchAndWait(BatchResults.java:226)
at org.teiid.jdbc.BatchResults.requestNextBatch(BatchResults.java:141)
at org.teiid.jdbc.BatchResults.hasNext(BatchResults.java:252)
at org.teiid.jdbc.ResultSetImpl.hasNext(ResultSetImpl.java:439)
at org.teiid.jdbc.ResultSetImpl.next(ResultSetImpl.java:251)
at JDBCClient.execute(JDBCClient.java:90)
at JDBCClient.main(JDBCClient.java:45)
Caused by: org.teiid.core.TeiidException: ASSERTION FAILED: expected reference to be not
null
at org.teiid.client.ResultsMessage.setException(ResultsMessage.java:202)
at org.teiid.dqp.internal.process.RequestWorkItem.sendError(RequestWorkItem.java:955)
at org.teiid.dqp.internal.process.RequestWorkItem.close(RequestWorkItem.java:543)
at org.teiid.dqp.internal.process.RequestWorkItem.process(RequestWorkItem.java:346)
at org.teiid.dqp.internal.process.AbstractWorkItem.run(AbstractWorkItem.java:51)
at org.teiid.dqp.internal.process.RequestWorkItem.run(RequestWorkItem.java:248)
at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:269)
at
org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119)
at
org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:214)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.AssertionError: ASSERTION FAILED: expected reference to be not null
at org.teiid.core.util.Assertion.failed(Assertion.java:73)
at org.teiid.core.util.Assertion.isNotNull(Assertion.java:100)
at org.teiid.core.util.Assertion.isNotNull(Assertion.java:92)
at org.teiid.common.buffer.TupleBuffer.getBatch(TupleBuffer.java:305)
at
org.teiid.dqp.internal.process.RequestWorkItem.sendResultsIfNeeded(RequestWorkItem.java:782)
at org.teiid.dqp.internal.process.RequestWorkItem.processMore(RequestWorkItem.java:462)
at org.teiid.dqp.internal.process.RequestWorkItem.process(RequestWorkItem.java:320)
{code}
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