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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <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>[DOCS-4594] Journal files behaviour description is misleading</title>
                <link>https://jira.mongodb.org/browse/DOCS-4594</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;&lt;a href=&quot;http://docs.mongodb.org/manual/core/journaling/#journal-files&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/core/journaling/#journal-files&lt;/a&gt;&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;Journal files are append-only files and have file names prefixed with j._. When a journal file holds 1 gigabyte of data, MongoDB creates a new journal file. &lt;b&gt;Once MongoDB applies all the write operations in a particular journal file to the database data files, it deletes the file, as it is no longer needed for recovery purposes.&lt;/b&gt; Unless you write many bytes of data per second, the journal directory should contain only two or three journal files.&lt;/p&gt;&lt;/blockquote&gt;
&lt;p&gt;MongoDB does not actively delete the journal files as the highlighted phrasing suggests. Instead, old journal files lie around until a new one is required. Given that the current one is guaranteed to still be in use at the time a new one is needed, at least two will persist at all times on any instance that has seen reasonable activity in it&apos;s current running lifetime.&lt;/p&gt;

&lt;p&gt;The two latest journal files will stay around &lt;b&gt;forever&lt;/b&gt; while the mongod is running even if you stop all writes. Only when a new journal file is required, are old ones (that are available) recycled for use as the new one.&lt;/p&gt;</description>
                <environment></environment>
        <key id="176629">DOCS-4594</key>
            <summary>Journal files behaviour description is misleading</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="9">Done</resolution>
                                        <assignee username="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="andrew.ryder@mongodb.com">Andrew Ryder</reporter>
                        <labels>
                    </labels>
                <created>Thu, 1 Jan 2015 23:34:09 +0000</created>
                <updated>Mon, 30 Oct 2023 22:31:08 +0000</updated>
                            <resolved>Mon, 7 Dec 2015 04:49:16 +0000</resolved>
                                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="1097141" author="xgen-internal-githook" created="Tue, 24 Nov 2015 15:16:34 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kay-kim&apos;, u&apos;name&apos;: u&apos;kay&apos;, u&apos;email&apos;: u&apos;kay.kim@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4594&quot; title=&quot;Journal files behaviour description is misleading&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4594&quot;&gt;&lt;del&gt;DOCS-4594&lt;/del&gt;&lt;/a&gt; journal file reuse&lt;br/&gt;
Branch: v3.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/199443bd10ea165302613cf8e41d105788192636&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/199443bd10ea165302613cf8e41d105788192636&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1097075" author="xgen-internal-githook" created="Tue, 24 Nov 2015 14:30:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kay-kim&apos;, u&apos;name&apos;: u&apos;kay&apos;, u&apos;email&apos;: u&apos;kay.kim@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4594&quot; title=&quot;Journal files behaviour description is misleading&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4594&quot;&gt;&lt;del&gt;DOCS-4594&lt;/del&gt;&lt;/a&gt; journal file reuse&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/bd89cebbc863db660c53826adf40705e070f31dd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/bd89cebbc863db660c53826adf40705e070f31dd&lt;/a&gt;&lt;/p&gt;</comment>
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