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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3655) errror in nightly regression test: LobStreamsTest:encryptedjunit.framework.AssertionFailedError: f:\jartest\JarResults.2008-04-29\ibm16_suites.All\system\singleUse\oneuse1e\tmp\lob6165.tmp
Date Thu, 02 Oct 2008 17:57:44 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12636411#action_12636411
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Knut Anders Hatlen commented on DERBY-3655:
-------------------------------------------

I lean slightly towards clearing it, I think. If an EmbedConnection instantiates a set in
one transaction, it is probably more likely to use it in the subsequent transactions too,
so clearing and reusing the object makes sense. We don't save that much memory by nulling
it out in the situations where it's not reused, so it shouldn't hurt. But I think the performance
penalty of overflowing to a temporary file is so high that the cost of allocating a new HashSet
is negligible, and therefore either approach would be fine.

> errror in nightly regression test: LobStreamsTest:encryptedjunit.framework.AssertionFailedError:
f:\jartest\JarResults.2008-04-29\ibm16_suites.All\system\singleUse\oneuse1e\tmp\lob6165.tmp
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3655
>                 URL: https://issues.apache.org/jira/browse/DERBY-3655
>             Project: Derby
>          Issue Type: Bug
>          Components: Regression Test Failure
>    Affects Versions: 10.3.3.0, 10.4.2.0
>         Environment: OS: Windows, Test: v10_4 branch insane jars, ibm16 jvm
> OS: Windows, Test: v10_3 branch insane jars, ibm142 jvm
>            Reporter: Mike Matrigali
>            Assignee: Kathey Marsden
>         Attachments: derby-3655_diff.txt, derby-3655_diff2.txt, derby-3655_diff3.txt
>
>
> There was 1 failure:
> 1) LobStreamsTest:encryptedjunit.framework.AssertionFailedError: f:\jartest\JarResults.2008-04-29\ibm16_suites.All\system\singleUse\oneuse1e\tmp\lob6165.tmp
> 	at org.apache.derbyTesting.junit.DropDatabaseSetup.removeDir(DropDatabaseSetup.java:130)
> 	at org.apache.derbyTesting.junit.DropDatabaseSetup.removeDir(DropDatabaseSetup.java:128)
> 	at org.apache.derbyTesting.junit.DropDatabaseSetup.access$000(DropDatabaseSetup.java:35)
> 	at org.apache.derbyTesting.junit.DropDatabaseSetup$1.run(DropDatabaseSetup.java:105)
> 	at java.security.AccessController.doPrivileged(AccessController.java:202)
> 	at org.apache.derbyTesting.junit.DropDatabaseSetup.removeDirectory(DropDatabaseSetup.java:102)
> 	at org.apache.derbyTesting.junit.DropDatabaseSetup.removeDirectory(DropDatabaseSetup.java:98)
> 	at org.apache.derbyTesting.junit.DropDatabaseSetup.removeDatabase(DropDatabaseSetup.java:91)
> 	at org.apache.derbyTesting.junit.DropDatabaseSetup.tearDown(DropDatabaseSetup.java:77)
> 	at junit.extensions.TestSetup$1.protect(TestSetup.java:20)
> 	at junit.extensions.TestSetup.run(TestSetup.java:23)
> 	at org.apache.derbyTesting.junit.BaseTestSetup.run(BaseTestSetup.java:57)
> 	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:22)
> 	at junit.extensions.TestSetup$1.protect(TestSetup.java:19)
> 	at junit.extensions.TestSetup.run(TestSetup.java:23)

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