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https://issues.apache.org/jira/browse/DERBY-6143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13653425#comment-13653425
 ] 

Myrna van Lunteren commented on DERBY-6143:
-------------------------------------------

I could find no trace of this test failure in 2012.

It has most often failed on the (vmware) machine on which 10.10 is getting 
tested.

Sometimes this test gets a SQLException, with different stack trace, not sure 
if those are the same problem or the same cause, e.g.
- February 21, 2013 - 10.9 branch, (10.9.2.2 - (1448885)), with ibm 1.7 see:
  
http://people.apache.org/~myrnavl/derby_test_results/v10_9/windows/testlog/ibm17/1448885-suites.All_diff.txt
- March 27 (build; run: 28th), 10.10 branch, 10.10.1.2 - (1461932), ibm1.5, 
additional errors in BlobClob4BlobTest.
  
http://people.apache.org/~myrnavl/derby_test_results/v10_10/windows/testlog/ibm15/1461932-suites.All_diff.txt
- May 1: 10.10 branch, 10.10.1.2 - (1478253), ibm 1.5:
  
http://people.apache.org/~myrnavl/derby_test_results/v10_10/windows/testlog/ibm15/1478253-suites.All_diff.txt
- May 2: (caused by a java.io.UTFDataFormatException), trunk, 10.11.0.0 alpha - 
(1478624), ibm 1.6:
  
http://people.apache.org/~myrnavl/derby_test_results/main/windows/testlog/ibm16/1478624-suites.All_diff.txt
 

The SQLNonTransientConnectionException:
all happened on the 10.10 branch
- March 21, additionally, similar exception in test 
store.Derby5234Test.test_02_maxOK, 10.10.1.2 - (1459614), ibm 1.6:
  
http://people.apache.org/~myrnavl/derby_test_results/v10_10/windows/testlog/ibm16/1459614-suites.All_diff.txt
- March 27, 10.10.1.2 - (1461932), ibm 1.6:
  
http://people.apache.org/~myrnavl/derby_test_results/v10_10/windows/testlog/ibm16/1461932-suites.All_diff.txt
- May 1, 10.10.1.2 - (1478253), ibm 1.6, and 1.7 (with an additional error in 
XAJNDITest)
  
http://people.apache.org/~myrnavl/derby_test_results/v10_10/windows/testlog/ibm16/1478253-suites.All_diff.txt
  
http://people.apache.org/~myrnavl/derby_test_results/v10_10/windows/testlog/ibm17/1478253-suites.All_diff.txt
- May 6, 10.10.1.2 - (1479751), ibm 1.7:
  
http://people.apache.org/~myrnavl/derby_test_results/v10_10/windows/testlog/ibm17/1479751-suites.All_diff.txt

In addition, it has also failed with an IOException:
- April 1, 10.10 branch: 10.10.1.2 - (1463364), ibm 1.5:
  
http://people.apache.org/~myrnavl/derby_test_results/v10_10/windows/testlog/ibm15/1463364-suites.All_diff.txt


                
> nightly regression test failure: 
> cs_FailedStreamInsertCharBufferBoundaries(org.apache.derbyTesting.functionTests.tests.jdbcapi.Derby2017LayerATest)java.io.IOException
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-6143
>                 URL: https://issues.apache.org/jira/browse/DERBY-6143
>             Project: Derby
>          Issue Type: Bug
>          Components: Test
>    Affects Versions: 10.10.1.2
>         Environment: windows, ibm15, 10.10 candidate branch
>            Reporter: Mike Matrigali
>            Assignee: Myrna van Lunteren
>
> windows, ibm15, 10.10 candidate branch
> http://people.apache.org/~myrnavl/derby_test_results/v10_10/windows/testlog/ibm15/1463364-suites.All_diff.txt
> There was 1 error:
> 1) 
> cs_FailedStreamInsertCharBufferBoundaries(org.apache.derbyTesting.functionTests.tests.jdbcapi.Derby2017LayerATest)java.io.IOException
>       at org.apache.derby.client.am.ClobLocatorReader.readCharacters(Unknown 
> Source)
>       at org.apache.derby.client.am.ClobLocatorReader.read(Unknown Source)
>       at java.io.BufferedReader.fill(BufferedReader.java:157)
>       at java.io.BufferedReader.read(BufferedReader.java:178)
>       at 
> org.apache.derbyTesting.junit.BaseTestCase.assertEquals(BaseTestCase.java:430)
>       at 
> org.apache.derbyTesting.functionTests.tests.jdbcapi.Derby2017LayerATest.doInsertTest(Derby2017LayerATest.java:575)
>       at 
> org.apache.derbyTesting.functionTests.tests.jdbcapi.Derby2017LayerATest.cs_FailedStreamInsertCharBufferBoundaries(Derby2017LayerATest.java:166)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at 
> org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:117)
>       at 
> org.apache.derbyTesting.junit.BaseJDBCTestCase.runBareOverridable(BaseJDBCTestCase.java:424)
>       at 
> org.apache.derbyTesting.junit.BaseJDBCTestCase.runBare(BaseJDBCTestCase.java:441)
>       at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
>       at junit.extensions.TestSetup$1.protect(TestSetup.java:21)
>       at junit.extensions.TestSetup.run(TestSetup.java:25)
>       at 
> org.apache.derbyTesting.junit.BaseTestSetup.run(BaseTestSetup.java:57)
>       at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
>       at junit.extensions.TestSetup$1.protect(TestSetup.java:21)
>       at junit.extensions.TestSetup.run(TestSetup.java:25)
> Caused by: org.apache.derby.client.am.DisconnectException: A communications 
> error has been detected: Connection reset.
>       at 
> org.apache.derby.client.net.NetAgent.throwCommunicationsFailure(Unknown 
> Source)
>       at org.apache.derby.client.net.Reply.fill(Unknown Source)
>       at org.apache.derby.client.net.Reply.ensureALayerDataInBuffer(Unknown 
> Source)
>       at org.apache.derby.client.net.Reply.readDssHeader(Unknown Source)
>       at org.apache.derby.client.net.Reply.startSameIdChainParse(Unknown 
> Source)
>       at 
> org.apache.derby.client.net.NetStatementReply.readExecuteCall(Unknown Source)
>       at org.apache.derby.client.net.StatementReply.readExecuteCall(Unknown 
> Source)
>       at org.apache.derby.client.net.NetStatement.readExecuteCall_(Unknown 
> Source)
>       at org.apache.derby.client.am.Statement.readExecuteCall(Unknown Source)
>       at org.apache.derby.client.am.PreparedStatement.flowExecute(Unknown 
> Source)
>       at org.apache.derby.client.am.PreparedStatement.executeX(Unknown Source)
>       at 
> org.apache.derby.client.am.CallableLocatorProcedures.clobGetLength(Unknown 
> Source)
>       at org.apache.derby.client.am.Clob.getLocatorLength(Unknown Source)
>       at org.apache.derby.client.am.Lob.sqlLength(Unknown Source)
>       ... 42 more
> Caused by: java.net.SocketException: Connection reset
>       at java.net.SocketInputStream.read(SocketInputStream.java:197)
>       ... 55 more
> FAILURES!!!
> Tests run: 15048,  Failures: 0,  Errors: 1

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