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    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-8149] Add optional &apos;max&apos; option to db command &apos;convertToCapped&apos;</title>
                <link>https://jira.mongodb.org/browse/SERVER-8149</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;     We rely on both the &apos;size&apos; and &apos;max&apos; options for a particular capped collection in our application.  We also allow configuration changes to the &apos;max&apos; option.  When this happens, we drop and re-create the capped collection with the new &apos;max&apos; option.&lt;/p&gt;

&lt;p&gt;     The problem is that we have a lot of other programs that are &lt;b&gt;always&lt;/b&gt; inserting lots of data to this collection... so in between the drop and create, if an insert occurs, our collection is no longer capped:&lt;/p&gt;

&lt;p/&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;my $cmd = Tie::IxHash-&amp;gt;new(create =&amp;gt; &quot;Logs&quot;, capped =&amp;gt; boolean::true, size =&amp;gt; MAX_CAPPED_SIZE, max =&amp;gt; $max_msgs);&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;$db-&amp;gt;run_command(Tie::IxHash-&amp;gt;new(drop =&amp;gt; &apos;Logs&apos;));&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;$db-&amp;gt;run_command($cmd);&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;   The only solution I could find was the &apos;convertToCapped&apos; database command, which would help us by locking the collection while converting.  However, this command doesn&apos;t support the &apos;max&apos; option.&lt;/p&gt;

&lt;p&gt;   Another solution would be the ability to drop and create a collection atomically (i.e. one database command instead of two), since the &apos;create&apos; command supports the max &apos;option&apos;&lt;/p&gt;</description>
                <environment></environment>
        <key id="61713">SERVER-8149</key>
            <summary>Add optional &apos;max&apos; option to db command &apos;convertToCapped&apos;</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="schou@barracuda.com">Samuel Chou</reporter>
                        <labels>
                    </labels>
                <created>Fri, 11 Jan 2013 18:11:47 +0000</created>
                <updated>Tue, 6 Dec 2022 05:26:00 +0000</updated>
                            <resolved>Mon, 4 Mar 2019 21:36:10 +0000</resolved>
                                                                    <component>Admin</component>
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