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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4432) Memory leak when attempting to boot non-existing database with the in-memory back end
Date Tue, 10 Nov 2009 10:46:28 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12775372#action_12775372

Kristian Waagan commented on DERBY-4432:

Regression tests ran cleanly on trunk with patch 1a.
Committed patch 1a to trunk with revision 834418.

Will check if it is suited for back-port and rerun tests on the 10.5 branch if that is the

> Memory leak when attempting to boot non-existing database with the in-memory back end
> -------------------------------------------------------------------------------------
>                 Key: DERBY-4432
>                 URL: https://issues.apache.org/jira/browse/DERBY-4432
>             Project: Derby
>          Issue Type: Bug
>          Components: Store
>    Affects Versions:,
>         Environment: In-memory back end and large amount of boot attempts of non-existing
>            Reporter: Kristian Waagan
>            Assignee: Kristian Waagan
>             Fix For:
>         Attachments: derby-4432-1a-mem_leak_fix.diff, derby-4432-1a-mem_leak_fix.stat
> When attempting to boot a non-existing database with the in-memory back end, a DataStore
is created and referenced by a map. Since the database doesn't exist, Derby won't use the
DataStore again and it will hang around indefinitely in VFMemoryStorageFactory (or until the
same database is actually created, in which case the data store will be used).
> FYI, storage factory instances are instantiated liberally, including for the same service
(i.e. six instances of VFMemoryStorageFactory may be created to boot "jdbc:derby:memory:myDB").

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