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    <title>MongoDB Jira</title>
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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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            <title>[DOCS-14384] Increase visibility for ephemeralForTest engine</title>
                <link>https://jira.mongodb.org/browse/DOCS-14384</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;
&lt;p&gt;I recently discovered that MongoDB offers a `ephemeralForTest` engine.&lt;/p&gt;

&lt;p&gt;This discovery followed issues my team experienced when upgrading the MongoDB instance used by our tests suite to v4.4, since we had to switch to `wiredTiger` as the engine.&lt;/p&gt;

&lt;p&gt;Suddenly, our test suite was running considerably slower, causing delays in our development.&lt;/p&gt;

&lt;p&gt;After days of tries to get this solved, from using `tmpfs` to disabling indexes and more, a member of our team finally found a reference to the `ephemeralForTest` engine.&lt;/p&gt;

&lt;p&gt;I would have expected this engine to be mentioned in the &lt;a href=&quot;https://docs.mongodb.com/manual/core/storage-engines/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Storage Engines&lt;/a&gt;&#160;page, but instead it is only mentioned in the v3.2 release notes.&lt;/p&gt;

&lt;p&gt;Since this engine definitely solved our issue, I&apos;d suggest it should be listed, or at least mentioned, in the Storage Engines page, to save other teams some precious time when they face this issue&lt;/p&gt;

&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;
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                <environment></environment>
        <key id="1692606">DOCS-14384</key>
            <summary>Increase visibility for ephemeralForTest engine</summary>
                <type id="12510" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Feedback</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>
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                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="mattia.giuffrida@sensortower.com">Mattia Giuffrida</reporter>
                        <labels>
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                <created>Tue, 27 Apr 2021 08:51:38 +0000</created>
                <updated>Fri, 30 Apr 2021 15:37:11 +0000</updated>
                            <resolved>Fri, 30 Apr 2021 15:37:11 +0000</resolved>
                                                                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3748982" author="jeffrey.allen" created="Fri, 30 Apr 2021 15:37:11 +0000"  >&lt;p&gt;Thanks &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=mattia.giuffrida%40sensortower.com&quot; class=&quot;user-hover&quot; rel=&quot;mattia.giuffrida@sensortower.com&quot;&gt;mattia.giuffrida@sensortower.com&lt;/a&gt;, closing this one.&lt;/p&gt;</comment>
                            <comment id="3740552" author="JIRAUSER1259772" created="Tue, 27 Apr 2021 08:53:54 +0000"  >&lt;p&gt;Sorry about this duplicate, JIRA&apos;s UI was hanging with the &quot;Create Ticket&quot; popup opened and I wasn&apos;t sure if this had been saved correctly.&lt;/p&gt;

&lt;p&gt;This ticket can be safely deleted in favour of &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-14383&quot; title=&quot;Increase visibility for ephemeralForTest engine&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-14383&quot;&gt;&lt;del&gt;DOCS-14383&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
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