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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-163] GridFS clean method Interrupted GridFS inserts leave unlinked entries in the .chunks collection - Some way to clean those up would be helpful</title>
                <link>https://jira.mongodb.org/browse/SERVER-163</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If, while performing a GridFS insert, the connection between the server and the client fails, the database ends up with a bunch of unlinked entries in the .chunks collection with no linked entry in .files. A simple way to prune these entries would be helpful for housekeeping purposes. At the very least, an example of how to do it in the MongoDB Shell would be extremely useful.&lt;/p&gt;</description>
                <environment></environment>
        <key id="10312">SERVER-163</key>
            <summary>GridFS clean method Interrupted GridFS inserts leave unlinked entries in the .chunks collection - Some way to clean those up would be helpful</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="ratdesang">Christopher</reporter>
                        <labels>
                    </labels>
                <created>Fri, 17 Jul 2009 12:14:20 +0000</created>
                <updated>Fri, 15 Jan 2010 01:34:46 +0000</updated>
                            <resolved>Wed, 28 Oct 2009 18:00:25 +0000</resolved>
                                                                    <component>Usability</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="11003" author="redbeard0531" created="Wed, 28 Oct 2009 18:00:25 +0000"  >&lt;p&gt;There is no safe way to do this server-side. I&apos;ll add some docs once 1.1.3 is out but here is a good method to do this if you can guarantee that no file are currently being added:&lt;/p&gt;

&lt;p&gt;var ids = db.fs.chunks.distinct(&quot;files_id&quot;);&lt;br/&gt;
var file_ids = db.fs.files.distinct(&quot;_id&quot;);&lt;br/&gt;
var bad_ids = (find ids not in file_ids);&lt;br/&gt;
db.fs.chunks.remove({&apos;file_ids&apos;: {&apos;$nin&apos;: bad_ids}})&lt;/p&gt;

&lt;p&gt;If you can&apos;t find a time when no files are being updated then store ids each night and remove anything still there after 1 day.&lt;/p&gt;</comment>
                            <comment id="10886" author="eliot" created="Wed, 14 Oct 2009 15:52:59 +0000"  >&lt;p&gt;we should add &quot;cleangridfs&quot; command&lt;br/&gt;
would be efficient if we did a query on both sorted by _id on files, and files_id on chunks, and just looked for files_id that didn&apos;t appear in  files&lt;/p&gt;</comment>
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