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https://issues.apache.org/jira/browse/DERBY-5937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13463156#comment-13463156
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Knut Anders Hatlen commented on DERBY-5937:
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I just tried the above steps with OpenJDK on FreeBSD, and verified with lsof 
that log1.dat indeed is still open.
                
> 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
>
> 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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