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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 Sat, 27 Sep 2008 09:45:46 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12635123#action_12635123
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Knut Anders Hatlen commented on DERBY-3655:
-------------------------------------------

My thought was to have one instance per database since it sounds too heavy to create one per
transaction. It might be that it's too complex to be worth it, though.

Another idea is to just add a list/set of file objects (either LOBFile or RandomAccessFile)
in EmbedConnection. Each time LOBStreamControl creates a temporary file, it is added to the
list/set, and each time LOBStreamControl closes a temporary file, it is removed. Since there
are no references from LOBFile/RandomAccessFile to Embed[BC]lob, this list won't prevent the
lob objects in the WeakHashMap from being gc'ed. And if an object has been gc'ed and removed
from the WeakHashMap, and finalization is still pending, a reference to the file is accessible
from EmbedConnection on the transaction boundary so that it can be closed.

> 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
>
> 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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