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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-39942] Extract transaction library from catalog_raii library</title>
                <link>https://jira.mongodb.org/browse/SERVER-39942</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, the transaction code is part of the&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/217588a5eff6d4c4d2621a03a0cee1b4566e00f1/src/mongo/db/SConscript#L713-L715&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;catalog_raii&lt;/a&gt; target in &lt;tt&gt;src/mongo/db/SConscript&lt;/tt&gt;. We should evaluate whether it makes sense to keep the transaction code in &lt;tt&gt;catalog_raii&lt;/tt&gt; in order to reduce the possibility of encountering circular dependencies in the future.&lt;/p&gt;

&lt;p&gt;Initially, the transaction code used to live inside &lt;tt&gt;session.cpp&lt;/tt&gt; but was refactored out into &lt;tt&gt;transaction_participant.cpp&lt;/tt&gt;. There exists a dependency between &lt;tt&gt;TransactionParticipant&lt;/tt&gt; and &lt;tt&gt;LockManager&lt;/tt&gt; where we need to be able to know whether a read command is inside a transaction in order to decide whether to acquire a mode IS or mode IX lock. It would be helpful to investigate these dependencies in greater detail in order to prevent more tech debt.&lt;/p&gt;</description>
                <environment></environment>
        <key id="709002">SERVER-39942</key>
            <summary>Extract transaction library from catalog_raii library</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="siyuan.zhou@mongodb.com">Siyuan Zhou</assignee>
                                    <reporter username="jason.chan@mongodb.com">Jason Chan</reporter>
                        <labels>
                    </labels>
                <created>Mon, 4 Mar 2019 19:20:15 +0000</created>
                <updated>Sun, 29 Oct 2023 22:23:19 +0000</updated>
                            <resolved>Fri, 22 Mar 2019 23:25:50 +0000</resolved>
                                                    <fixVersion>4.1.10</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="2189416" author="xgen-internal-githook" created="Fri, 22 Mar 2019 23:20:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;siyuan.zhou@mongodb.com&apos;, &apos;name&apos;: &apos;Siyuan Zhou&apos;, &apos;username&apos;: &apos;visualzhou&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-39942&quot; title=&quot;Extract transaction library from catalog_raii library&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-39942&quot;&gt;&lt;del&gt;SERVER-39942&lt;/del&gt;&lt;/a&gt; Make dependencies on transaction library private.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b5f3dc8f510bf9ba5e3ea5e5c0e6e2adcff66174&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b5f3dc8f510bf9ba5e3ea5e5c0e6e2adcff66174&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2182006" author="xgen-internal-githook" created="Fri, 15 Mar 2019 17:59:40 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;siyuan.zhou@mongodb.com&apos;, &apos;name&apos;: &apos;Siyuan Zhou&apos;, &apos;username&apos;: &apos;visualzhou&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-39942&quot; title=&quot;Extract transaction library from catalog_raii library&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-39942&quot;&gt;&lt;del&gt;SERVER-39942&lt;/del&gt;&lt;/a&gt; Extract transaction library from catalog_raii library.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c346f2db39f1ddae16ecf8643041e19a31a83d84&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c346f2db39f1ddae16ecf8643041e19a31a83d84&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2181068" author="siyuan.zhou@10gen.com" created="Thu, 14 Mar 2019 18:47:32 +0000"  >&lt;p&gt;This is blocking the change stream work in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-39675&quot; title=&quot;Look up prepared transaction when a Change Stream encounters its commit&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-39675&quot;&gt;&lt;del&gt;SERVER-39675&lt;/del&gt;&lt;/a&gt;, so I&apos;m prioritizing it. CC &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=tess.avitabile&quot; class=&quot;user-hover&quot; rel=&quot;tess.avitabile&quot;&gt;tess.avitabile&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="2171443" author="jason.chan" created="Tue, 5 Mar 2019 18:32:45 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=william.schultz&quot; class=&quot;user-hover&quot; rel=&quot;william.schultz&quot;&gt;william.schultz&lt;/a&gt; mentioned that we have a tool called &lt;a href=&quot;https://github.com/mongodb/mongo/blob/bf895a8f816b9bae68eb22f349b45e1d1d5f2da7/site_scons/site_tools/dagger/dagger.py&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Dagger&lt;/a&gt; that is able to track the build dependency data for the mongoDB project and output the graph into a json file. It may be worth it to investigate incorporating some visualization tools to output the graph into something more readable. &lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="685747">SERVER-39441</issuekey>
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