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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>[SERVER-34553] dropCollection does not free up storage on Secondary</title>
                <link>https://jira.mongodb.org/browse/SERVER-34553</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We dropped a giant collection in a database. It certainly released the storage on the master but all the slaves still has the collection data file xxxxx.wt still lingering on the slaves. There is no replication lag and the logs on the secondary clearly show the drop did went thru the slaves.&lt;br/&gt;
2018-04-18T11:25:12.394-0500 I COMMAND  &lt;span class=&quot;error&quot;&gt;&amp;#91;repl writer worker 7&amp;#93;&lt;/span&gt; CMD: drop &amp;lt; my big collection name here &amp;gt;&lt;/p&gt;

&lt;p&gt;The version of MongoDB we are using is 3.2.19. Please advice.&lt;/p&gt;</description>
                <environment></environment>
        <key id="530557">SERVER-34553</key>
            <summary>dropCollection does not free up storage on Secondary</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="3">Duplicate</resolution>
                                        <assignee username="kelsey.schubert@mongodb.com">Kelsey Schubert</assignee>
                                    <reporter username="manan@indeed.com">Manan Shah</reporter>
                        <labels>
                    </labels>
                <created>Wed, 18 Apr 2018 19:39:40 +0000</created>
                <updated>Tue, 24 Apr 2018 23:57:05 +0000</updated>
                            <resolved>Thu, 19 Apr 2018 21:36:32 +0000</resolved>
                                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1869523" author="manan@indeed.com" created="Thu, 19 Apr 2018 21:59:24 +0000"  >&lt;p&gt;Oh yes this is in 3.2.12 and not 3.2.19.&lt;br/&gt;
Thanks for the recommendation.&lt;/p&gt;</comment>
                            <comment id="1869493" author="thomas.schubert" created="Thu, 19 Apr 2018 21:36:21 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=manan%40indeed.com&quot; class=&quot;user-hover&quot; rel=&quot;manan@indeed.com&quot;&gt;manan@indeed.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;I believe you&apos;re encountering &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-31101&quot; title=&quot;WT table not dropped after collection is dropped due to long-running OperationContext&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-31101&quot;&gt;&lt;del&gt;SERVER-31101&lt;/del&gt;&lt;/a&gt;. From the diangostic.data you&apos;ve uploaded it appears that you are running MongoDB 3.2.12 rather than 3.2.19, which contains this fix. I&apos;d recommend upgrading to a more recent version of MongoDB to resolve this issue.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Kelsey&lt;/p&gt;</comment>
                            <comment id="1869321" author="manan@indeed.com" created="Thu, 19 Apr 2018 19:54:18 +0000"  >&lt;p&gt;Just to update, we had to restart the Secondary instances in order to gain the space back. There were open file handles for the lingering xxxx.wt data file in the OS. Do you know the reason why and if that is a bug, in what version is that resolved?&lt;/p&gt;</comment>
                            <comment id="1868172" author="manan@indeed.com" created="Wed, 18 Apr 2018 20:47:22 +0000"  >&lt;p&gt;Thanks Kelsey. All files finished uploading to the portal.&lt;/p&gt;</comment>
                            <comment id="1868162" author="thomas.schubert" created="Wed, 18 Apr 2018 20:38:43 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=manan%40indeed.com&quot; class=&quot;user-hover&quot; rel=&quot;manan@indeed.com&quot;&gt;manan@indeed.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;I believe the JIRA upload limit is currently configured at 150mb, but I&apos;ve gone ahead and created a secure &lt;a href=&quot;https://10gen-httpsupload.s3.amazonaws.com/upload_forms/31a087c2-73fe-4459-9f2a-6f92876200d5.html&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;upload portal&lt;/a&gt; for you to use. Files uploaded to this portal are only visible to MongoDB employees investigating this issue and are routinely deleted after some time.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Kelsey&lt;/p&gt;</comment>
                            <comment id="1868149" author="manan@indeed.com" created="Wed, 18 Apr 2018 20:30:39 +0000"  >&lt;p&gt;Sure, even the zipped version is 104M. Basically, zip or gzip didn&apos;t help on the diagnostic.data folder. Is it ok to upload 100M file to JIRA or do you prefer some other way of sending you the files?&lt;/p&gt;</comment>
                            <comment id="1868066" author="thomas.schubert" created="Wed, 18 Apr 2018 19:45:36 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=manan%40indeed.com&quot; class=&quot;user-hover&quot; rel=&quot;manan@indeed.com&quot;&gt;manan@indeed.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for reporting this issue. So we can investigate, would you please upload an archive of the &lt;tt&gt;diagnostic.data&lt;/tt&gt; from the dbpath of an affected secondary?&lt;/p&gt;

&lt;p&gt;Thank you,&lt;br/&gt;
Kelsey&lt;/p&gt;</comment>
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