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From "Kim van der Riet (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (QPID-6043) [linearstore] Add a configuration option to overwrite files returned to the EFP
Date Tue, 04 Nov 2014 14:54:34 GMT

     [ https://issues.apache.org/jira/browse/QPID-6043?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Kim van der Riet closed QPID-6043.

> [linearstore] Add a configuration option to overwrite files returned to the EFP
> -------------------------------------------------------------------------------
>                 Key: QPID-6043
>                 URL: https://issues.apache.org/jira/browse/QPID-6043
>             Project: Qpid
>          Issue Type: Improvement
>          Components: C++ Broker
>            Reporter: Kim van der Riet
>            Assignee: Kim van der Riet
> The linearstore returns used files to the Empty File Pool when they are no longer in
use in a journal. Under normal use, the header of the file is reset (partly overwritten so
that it cannot again be used with any journal), and a new header written when the file is
once again used in a journal. However, the data within the journal remains. The header structure,
particularly the use of serial numbers in the file and record headers, and the use of record
checksums guarantee that old data can never be recovered as part of a newer journal.
> However, as an added security feature, an option which will completely erase the data
content of the file would be useful. This comes with a performance penalty, which will have
to be quantified when a solution is proposed.
> The proposed linearstore option is:
> {noformat}--overwrite-before-return [true|false|yes|no|1|0]{noformat}

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