NullPointerException in org.apache.derby.client.net.Request.sendBytes() with client

Investigating DERBY-5308, I found that the LobLimits.java test run with client fails with a NullPointerException.

END setup
========================================
START ClobTest #1 -insertClob of size = 2147483647
Rows inserted with clob of size (2147483647) = 2
========================================
========================================
START ClobTest #2 - SELECT CLOB of size = 2147483647
Matched rows selected with clob of size(2147483647) =1
========================================
========================================
START ClobTest #3 - SELECT CLOB of size = 2147483647
Matched rows selected with clob of size(2147483647) =1
========================================
========================================
START ClobTest #4 - select and then update clob of size= 2147483647 - Uses setClob api
FAIL – Unexpected exception:
java.lang.NullPointerException
at org.apache.derby.client.net.Request.sendBytes(Unknown Source)
at org.apache.derby.client.net.Request.flushScalarStreamSegment(Unknown Source)
at org.apache.derby.client.net.Request.padScalarStreamForError(Unknown Source)
at org.apache.derby.client.net.Request.writePlainScalarStream(Unknown Source)
at org.apache.derby.client.net.Request.writeScalarStream(Unknown Source)
at org.apache.derby.client.net.Request.writeScalarStream(Unknown Source)
at org.apache.derby.client.net.NetStatementRequest.buildEXTDTA(Unknown Source)
at org.apache.derby.client.net.NetStatementRequest.writeExecute(Unknown Source)
at org.apache.derby.client.net.NetPreparedStatement.writeExecute_(Unknown Source)
at org.apache.derby.client.am.PreparedStatement.writeExecute(Unknown Source)
at org.apache.derby.client.am.PreparedStatement.flowExecute(Unknown Source)
at org.apache.derby.client.am.PreparedStatement.executeUpdateX(Unknown Source)
at org.apache.derby.client.am.PreparedStatement.executeUpdate(Unknown Source)
at org.apache.derbyTesting.functionTests.tests.largedata.LobLimits.selectUpdateClob(LobLimits.java:115
7)
at org.apache.derbyTesting.functionTests.tests.largedata.LobLimits.clobTests(LobLimits.java:313)
at org.apache.derbyTesting.functionTests.tests.largedata.LobLimits.runTests(LobLimits.java:177)
at org.apache.derbyTesting.functionTests.tests.largedata.LobLimits.main(LobLimits.java:151)
========================================
START ClobTest #12.1 -insertClob of size = 104857600
NEGATIVE TEST - Expected Exception:
EXPECTED SQL Exception: (08003) No current connection.
========================================
START ClobTest #12.2 - SELECT CLOB of size = 104857600
FAIL – Unexpected exception:
java.sql.SQLNonTransientConnectionException: No current connection.
at org.apache.derby.client.am.SQLExceptionFactory40.getSQLException(Unknown Source)
at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source)
at org.apache.derby.client.am.PreparedStatement.setInt(Unknown Source)
at org.apache.derbyTesting.functionTests.tests.largedata.LobLimits.selectClob(LobLimits.java:1007)

In the derby.log I see

derby.system.home=/local0/kmarsden/repro/largeData/testtrunkdnc/DerbyNetClient/LobLimits
Database Class Loader started - derby.database.classpath=''
Tue Jul 05 17:50:01 PDT 2011 Thread[DRDAConnThread_11,5,main] (DATABASE = wombat), (DRDAID = .-580681567053183
269

{2}), Execution failed because of a Distributed Protocol Error: DRDA_Proto_SYNTAXRM; CODPNT arg = 200d; E
rror Code Value = 1d. Plaintext connection attempt from an SSL enabled client?
Tue Jul 05 17:50:01 PDT 2011 : Execution failed because of a Distributed Protocol Error: DRDA_Proto_SYNTAXRM;
CODPNT arg = 200d; Error Code Value = 1d. Plaintext connection attempt from an SSL enabled client?
org.apache.derby.impl.drda.DRDAProtocolException: Execution failed because of a Distributed Protocol Error: D
RDA_Proto_SYNTAXRM; CODPNT arg = 200d; Error Code Value = 1d. Plaintext connection attempt from an SSL enable
d client?
at org.apache.derby.impl.drda.DRDAConnThread.throwSyntaxrm(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.invalidCodePoint(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseEXCSQLSTTobjects(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseEXCSQLSTT(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
Tue Jul 05 17:50:01 PDT 2011 Thread[DRDAConnThread_11,5,main] (DATABASE = wombat), (DRDAID = .-580681567053183
269{2}

), Execution failed because of a Distributed Protocol Error: DRDA_Proto_SYNTAXRM; CODPNT arg = 200d; E
rror Code Value = 1d. Plaintext connection attempt from an SSL enabled client?
Tue Jul 05 17:50:01 PDT 2011 : Execution failed because of a Distributed Protocol Error: DRDA_Proto_SYNTAXRM;
CODPNT arg = 200d; Error Code Value = 1d. Plaintext connection attempt from an SSL enabled client?
org.apache.derby.impl.drda.DRDAProtocolException: Execution failed because of a Distributed Protocol Error: D
RDA_Proto_SYNTAXRM; CODPNT arg = 200d; Error Code Value = 1d. Plaintext connection attempt from an SSL enable
d client?
at org.apache.derby.impl.drda.DRDAConnThread.throwSyntaxrm(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.invalidCodePoint(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseEXCSQLSTTobjects(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.parseEXCSQLSTT(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown Source)
at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
----------------------------------------------------------------
Tue Jul 05 17:50:07 PDT 2011: Shutting down Derby engine
----------------------------------------------------------------
Tue Jul 05 17:50:07 PDT 2011:

To run the test, you have to remove largeData from DerbyNetClient.exclude and run
java -Dframework=DerbyNetClient org.apache.derbyTesting.functionTests.harness.RunTest org.apache.derbyTesting.functionTests.tests.lageData.LobLimits.
It took about 3.5 hours to occur.

I will work on a smaller reproduction.

5,9 36%