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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-5937) File handle is leaked when a Slave replication is shutdown with failover=true
Date Wed, 10 Oct 2012 14:01:03 GMT

     [ https://issues.apache.org/jira/browse/DERBY-5937?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Knut Anders Hatlen updated DERBY-5937:
--------------------------------------

    Attachment: backport-10.9.diff

The regression test case uses a helper method, TestConfiguration.getDatabasePath(), which
is not available on the 10.9 branch. The attached backport-10.9.diff patch is a backport of
the three commits that went into trunk, with the missing method added manually. All the regression
tests ran cleanly on the 10.9 branch with this patch.
                
> File handle is leaked when a Slave replication is shutdown with failover=true
> -----------------------------------------------------------------------------
>
>                 Key: DERBY-5937
>                 URL: https://issues.apache.org/jira/browse/DERBY-5937
>             Project: Derby
>          Issue Type: Bug
>          Components: Replication
>    Affects Versions: 10.8.2.2
>         Environment: Windows 7
>            Reporter: Glenn McGregor
>            Assignee: Knut Anders Hatlen
>              Labels: derby_triage10_10
>             Fix For: 10.10.0.0
>
>         Attachments: backport-10.9.diff, d5937-1a-test.diff, d5937-2a-close.diff, d5937-3a-test-datasource.diff
>
>
> As part of our use of derby replication, we shut the slave down if we detect reachability
issues with the master. Normally we shut it down, and bring it back up as a regular database
in read-only mode.  Then when the master can, it tries to push a fresh copy back to the slave
system. However, during the failover=true shutdown on the slave, the log file  ".../name/log/log1.dat"
is still open. 
> Because of this open file, at least on Windows, it's impossible to move the database
file out of the way, and to install a fresh copy from the master.

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