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Posted to derby-dev@db.apache.org by "Knut Anders Hatlen (JIRA)" <ji...@apache.org> on 2007/05/31 13:32:20 UTC
[jira] Created: (DERBY-2734) LOB finalizers may close the
underlying container while there are open streams
LOB finalizers may close the underlying container while there are open streams
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Key: DERBY-2734
URL: https://issues.apache.org/jira/browse/DERBY-2734
Project: Derby
Issue Type: Bug
Components: JDBC, Regression Test Failure, Store
Affects Versions: 10.3.0.0
Reporter: Knut Anders Hatlen
Priority: Minor
Seen in the Tinderbox: http://dbtg.thresher.com/derby/test/tinderbox_trunk16/jvm1.6/testing/testlog/SunOS-5.10_i86pc-i386/542818-org.apache.derbyTesting.functionTests.suites.All_diff.txt
The code in LobStreamsTest that failed, looks like this:
InputStream lStream = rs3.getClob(1).getAsciiStream();
assertTrue("FAIL - Clob and file contents do not match",
compareLob2File(fStream, lStream));
I think the problem is that the Clob object is garbage collected before the stream has been exhausted, and EmbedClob.finalize() closes the container. I think this affects earlier releases as well, but I'm only marking it as a 10.3 issue for now since I haven't verified it.
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[jira] Resolved: (DERBY-2734) LOB finalizers may close the
underlying container while there are open streams
Posted by "Kristian Waagan (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/DERBY-2734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kristian Waagan resolved DERBY-2734.
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Fix Version/s: 10.3.2.1
Resolution: Fixed
Resolving as fixed.
I think the issue got fixed as part of DERBY-2646 ("Cleanup of Clob control/support structures"), where the finalizer was removed.
> LOB finalizers may close the underlying container while there are open streams
> ------------------------------------------------------------------------------
>
> Key: DERBY-2734
> URL: https://issues.apache.org/jira/browse/DERBY-2734
> Project: Derby
> Issue Type: Bug
> Components: JDBC, Store
> Affects Versions: 10.3.1.4
> Reporter: Knut Anders Hatlen
> Priority: Minor
> Fix For: 10.3.2.1
>
>
> Seen in the Tinderbox: http://dbtg.thresher.com/derby/test/tinderbox_trunk16/jvm1.6/testing/testlog/SunOS-5.10_i86pc-i386/542818-org.apache.derbyTesting.functionTests.suites.All_diff.txt
> The code in LobStreamsTest that failed, looks like this:
> InputStream lStream = rs3.getClob(1).getAsciiStream();
> assertTrue("FAIL - Clob and file contents do not match",
> compareLob2File(fStream, lStream));
> I think the problem is that the Clob object is garbage collected before the stream has been exhausted, and EmbedClob.finalize() closes the container. I think this affects earlier releases as well, but I'm only marking it as a 10.3 issue for now since I haven't verified it.
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[jira] Commented: (DERBY-2734) LOB finalizers may close the
underlying container while there are open streams
Posted by "Kristian Waagan (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/DERBY-2734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12501931 ]
Kristian Waagan commented on DERBY-2734:
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If you see this error again, please tell!
The code that might have caused this error has been rewritten, but I do not know if the problem has been solved for sure.
At least the finalizer no longer exists.
> LOB finalizers may close the underlying container while there are open streams
> ------------------------------------------------------------------------------
>
> Key: DERBY-2734
> URL: https://issues.apache.org/jira/browse/DERBY-2734
> Project: Derby
> Issue Type: Bug
> Components: JDBC, Regression Test Failure, Store
> Affects Versions: 10.3.0.0
> Reporter: Knut Anders Hatlen
> Priority: Minor
>
> Seen in the Tinderbox: http://dbtg.thresher.com/derby/test/tinderbox_trunk16/jvm1.6/testing/testlog/SunOS-5.10_i86pc-i386/542818-org.apache.derbyTesting.functionTests.suites.All_diff.txt
> The code in LobStreamsTest that failed, looks like this:
> InputStream lStream = rs3.getClob(1).getAsciiStream();
> assertTrue("FAIL - Clob and file contents do not match",
> compareLob2File(fStream, lStream));
> I think the problem is that the Clob object is garbage collected before the stream has been exhausted, and EmbedClob.finalize() closes the container. I think this affects earlier releases as well, but I'm only marking it as a 10.3 issue for now since I haven't verified it.
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