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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-9100] add ability to repair or compact individual databases</title>
                <link>https://jira.mongodb.org/browse/SERVER-9100</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We have the ability to compact individual collections, or all the databases, but we don&apos;t have the ability to compact individual databases.  &lt;/p&gt;

&lt;p&gt;It takes us about a week and a half to repair all the databases; this is more time than we have available on our oplog.  As a workaround, we&apos;ve been compacting all of the collections individually.&lt;/p&gt;

&lt;p&gt;Unfortunately, we&apos;ve found that for databases where lots of collections have been deleted, performance can actually degrade when we compact all of the collections because it opens up a lot of holes.  We start to get warnings in the mongodb.log like:&lt;/p&gt;

&lt;p&gt;Sat Mar 23 01:24:30 &lt;span class=&quot;error&quot;&gt;&amp;#91;repl writer worker 16&amp;#93;&lt;/span&gt; warning: newExtent 179497 scanned&lt;/p&gt;

&lt;p&gt;... and a query will grab the write lock for up to 2 minutes.&lt;/p&gt;

&lt;p&gt;As a workaround, we have been taking a secondary offline and doing a mongodump and mongorestore of individual databases in order to compact them.  This is really cumbersome though, and it would be much better if we could simply tell it to compact one database at a time.&lt;/p&gt;</description>
                <environment></environment>
        <key id="69480">SERVER-9100</key>
            <summary>add ability to repair or compact individual databases</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="9">Done</resolution>
                                        <assignee username="rassi">J Rassi</assignee>
                                    <reporter username="charity@parse.com">charity majors</reporter>
                        <labels>
                    </labels>
                <created>Sat, 23 Mar 2013 01:26:02 +0000</created>
                <updated>Wed, 10 Dec 2014 23:10:27 +0000</updated>
                            <resolved>Sat, 23 Mar 2013 02:01:57 +0000</resolved>
                                    <version>2.2.3</version>
                                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="296331" author="charity@parse.com" created="Sat, 23 Mar 2013 01:54:31 +0000"  >&lt;p&gt;ah!  yep, that does it.  I&apos;ve read that doc many times, but somehow missed the &quot;limited to only the current database&quot; part of it.  Thanks!&lt;/p&gt;</comment>
                            <comment id="296325" author="rassi@10gen.com" created="Sat, 23 Mar 2013 01:37:02 +0000"  >&lt;p&gt;This is the function of the db.repairDatabase() shell helper &amp;#8211; perhaps you haven&apos;t come across it.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://docs.mongodb.org/manual/reference/method/db.repairDatabase/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/reference/method/db.repairDatabase/&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Does it fit your use?&lt;/p&gt;</comment>
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