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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-41842] Apply unit test binary collapse to tests under src/mongo/db/storage</title>
                <link>https://jira.mongodb.org/browse/SERVER-41842</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41809&quot; title=&quot;Reduce number of unit test binaries&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41809&quot;&gt;&lt;del&gt;SERVER-41809&lt;/del&gt;&lt;/a&gt;, we collapsed the unit tests on a per-directory basis in order to improve the build time for the statically linked unit tests, particularly on Windows. However, the collapse was not applied under &lt;tt&gt;src/mongo/db/storage&lt;/tt&gt;, since those tests have specialized setup that renders them incompatible with living together within one binary.&lt;/p&gt;

&lt;p&gt;We should investigate how much additional build time savings would result from combining them. If there is real savings, we should undertake the work to make the unit tests compatible with collapse and collapse them.&lt;/p&gt;

&lt;p&gt;Doing so would probably also simplify the tests themselves.&lt;/p&gt;</description>
                <environment></environment>
        <key id="809646">SERVER-41842</key>
            <summary>Apply unit test binary collapse to tests under src/mongo/db/storage</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="13201">Fixed</resolution>
                                        <assignee username="xiangyu.yao@mongodb.com">Xiangyu Yao</assignee>
                                    <reporter username="andrew.morrow@mongodb.com">Andrew Morrow</reporter>
                        <labels>
                    </labels>
                <created>Thu, 20 Jun 2019 19:41:02 +0000</created>
                <updated>Sun, 29 Oct 2023 22:19:43 +0000</updated>
                            <resolved>Mon, 16 Sep 2019 13:46:39 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                                    <component>Testing Infrastructure</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="2420705" author="xgen-internal-githook" created="Mon, 16 Sep 2019 00:40:03 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;xy24&apos;, &apos;email&apos;: &apos;xiangyu.yao@mongodb.com&apos;, &apos;name&apos;: &apos;Xiangyu Yao&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41842&quot; title=&quot;Apply unit test binary collapse to tests under src/mongo/db/storage&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41842&quot;&gt;&lt;del&gt;SERVER-41842&lt;/del&gt;&lt;/a&gt; Collapse unit tests under storage&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e8a57efe63c2f40b0713e49fd7437e2d2c21cbda&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e8a57efe63c2f40b0713e49fd7437e2d2c21cbda&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2292059" author="dianna.hohensee" created="Thu, 20 Jun 2019 21:00:20 +0000"  >&lt;p&gt;From Drew on how to collapse the unit tests (without making them work, mind) to quantify the compile time gain:&lt;br/&gt;
&quot;&lt;br/&gt;
Yeah, it is very mechanical&lt;br/&gt;
Just make a new unit test binary, call it `path_to_this_dir_test`&lt;br/&gt;
Then merge in all the `_test.cpp` files from the directory as the `sources`&lt;br/&gt;
And then merge all of the `LIBDEPS` from each test into the new tests `LIBDEPS`&lt;br/&gt;
Sort and uniq those&lt;br/&gt;
Then patch queue the build time (edited) &lt;br/&gt;
&quot;&lt;/p&gt;</comment>
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