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From "Andreas Korneliussen (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-1564) wisconsin.sql test failed in DerbyNet framework, VM for network server got OutOfMemoryError
Date Thu, 27 Jul 2006 15:25:14 GMT
    [ http://issues.apache.org/jira/browse/DERBY-1564?page=comments#action_12423858 ] 
Andreas Korneliussen commented on DERBY-1564:

I think experimenting with different heap-sizes is slightly off-track, since all it may prove
is that derby 10.2 may use more memory than derby 10.1 (then excluding the fact that the test
has changed). 

This error was seen in a very specific environment: new VMs (JVM 1.5 and JVM 1.6), and on
Sparc platform (real multi CPU) and in Solaris Zones environment (which will affect timing).
This test has previously had timing issues.  Would it be possible to run the test in the same
environment as it failed using the derbyTesting.jar from 10.2, against Derby jar files from
10.1 ? If the error is reproduced, it indicates that this is not a regression, however still
it may be a serious bug.

The tests have been changed in DERBY-937. One change was to allow the optimizer to use as
much time as it want in order to find the perfect query plan. The other change was to run
compress on the tables.  This happens before the test starts running the sql script which
gives output. To me, this indicates, that the added compress may have played a part of the
issue (since it did not give any output).

> wisconsin.sql test failed in DerbyNet framework, VM for network server got OutOfMemoryError
> -------------------------------------------------------------------------------------------
>                 Key: DERBY-1564
>                 URL: http://issues.apache.org/jira/browse/DERBY-1564
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Server, Test
>    Affects Versions:
>         Environment: Solaris Sparc, Java 6, running in a Solaris Zone. DerbyNet framework.
>            Reporter: Andreas Korneliussen
>            Priority: Critical
>         Attachments: wisconsin.tar.gz
> The wisconsin test failed when running it in DerbyNet framework. No output in the outfile.
The DerbyNet.err file has one message:
> Exception in thread "Thread-2" java.lang.OutOfMemoryError: Java heap space
> The test was run against snapshot release.

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