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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-41180] Rename &apos;MergingLogic&apos; to &apos;DistributedPlanLogic&apos; to avoid confusion with $merge</title>
                <link>https://jira.mongodb.org/browse/SERVER-41180</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;During development of the $merge stage we realized that the existing concept of &lt;a href=&quot;https://github.com/mongodb/mongo/blob/06c7e27f2e7a668d81baf02d89f422cdda205fce/src/mongo/db/pipeline/document_source.h#L222&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;DocumentSource::MergingLogic&lt;/tt&gt;&lt;/a&gt; now had the potential to be confused with something specific to the $merge stage or with similarly named types we&apos;re introducing, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/06c7e27f2e7a668d81baf02d89f422cdda205fce/src/mongo/db/pipeline/document_source_merge.h#L84&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;MergeStrategyDescriptor&lt;/tt&gt;&lt;/a&gt; and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/06c7e27f2e7a668d81baf02d89f422cdda205fce/src/mongo/db/pipeline/document_source_merge.h#L90&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;MergeStrategy&lt;/tt&gt;&lt;/a&gt;. &lt;/p&gt;

&lt;p&gt;This ticket proposes renaming &apos;MergingLogic&apos; and &apos;mergingLogic()&apos; to be &apos;DistributedPlanLogic&apos; and &apos;distributedPlanLogic()&apos; to make the distinction more clear.&lt;/p&gt;</description>
                <environment></environment>
        <key id="769757">SERVER-41180</key>
            <summary>Rename &apos;MergingLogic&apos; to &apos;DistributedPlanLogic&apos; to avoid confusion with $merge</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="arun.banala@mongodb.com">Arun Banala</assignee>
                                    <reporter username="charlie.swanson@mongodb.com">Charlie Swanson</reporter>
                        <labels>
                    </labels>
                <created>Thu, 16 May 2019 14:49:47 +0000</created>
                <updated>Sun, 29 Oct 2023 22:20:58 +0000</updated>
                            <resolved>Mon, 27 May 2019 09:47:33 +0000</resolved>
                                                    <fixVersion>4.1.12</fixVersion>
                                    <component>Aggregation Framework</component>
                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="2259113" author="xgen-internal-githook" created="Fri, 24 May 2019 13:27:34 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Arun Banala&apos;, &apos;email&apos;: &apos;arun.banala@mongodb.com&apos;, &apos;username&apos;: &apos;banarun&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41180&quot; title=&quot;Rename &amp;#39;MergingLogic&amp;#39; to &amp;#39;DistributedPlanLogic&amp;#39; to avoid confusion with $merge&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41180&quot;&gt;&lt;del&gt;SERVER-41180&lt;/del&gt;&lt;/a&gt; Rename &apos;MergingLogic&apos; to &apos;DistributedPlanLogic&apos; to avoid confusion with $merge&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7536959e9afa7e5dd0ef7bc807630630e48d5706&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7536959e9afa7e5dd0ef7bc807630630e48d5706&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2259107" author="xgen-internal-githook" created="Fri, 24 May 2019 13:22:05 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;arun.banala@mongodb.com&apos;, &apos;name&apos;: &apos;Arun Banala&apos;, &apos;username&apos;: &apos;banarun&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41180&quot; title=&quot;Rename &amp;#39;MergingLogic&amp;#39; to &amp;#39;DistributedPlanLogic&amp;#39; to avoid confusion with $merge&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41180&quot;&gt;&lt;del&gt;SERVER-41180&lt;/del&gt;&lt;/a&gt; Rename &apos;MergingLogic&apos; to &apos;DistributedPlanLogic&apos; to avoid confusion with $merge&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/10gen/mongo-enterprise-modules/commit/a090adccbb88462a5d37397ba19e5b2e5f20ec98&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/mongo-enterprise-modules/commit/a090adccbb88462a5d37397ba19e5b2e5f20ec98&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2256871" author="bernard.gorman" created="Wed, 22 May 2019 19:49:44 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=david.storch&quot; class=&quot;user-hover&quot; rel=&quot;david.storch&quot;&gt;david.storch&lt;/a&gt; I agree that this doesn&apos;t eliminate the potential for future confusion, but it will certainly eliminate the strongest point of confusion - within the &lt;tt&gt;DocumentSourceMerge&lt;/tt&gt; class itself, where we currently have &lt;tt&gt;MergeStrategyDescriptor&lt;/tt&gt;, &lt;tt&gt;MergeStrategy&lt;/tt&gt;, &lt;tt&gt;MergeMode&lt;/tt&gt; and &lt;tt&gt;MergingLogic&lt;/tt&gt;. I also think that &lt;tt&gt;DistributedPlanLogic&lt;/tt&gt; captures the intent of this struct better than &lt;tt&gt;MergingLogic&lt;/tt&gt;, since the struct defines not only what we do on the merging side of the splitpoint but also on the shards side.&lt;/p&gt;</comment>
                            <comment id="2254379" author="david.storch" created="Tue, 21 May 2019 16:36:11 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=charlie.swanson&quot; class=&quot;user-hover&quot; rel=&quot;charlie.swanson&quot;&gt;charlie.swanson&lt;/a&gt;, we definitely have a concept of a &quot;merging pipeline&quot; to distinguish the merging part from the shards part. I don&apos;t think we should do away with that terminology entirely, so we may just have to live with the risk of confusing the &lt;tt&gt;$merge&lt;/tt&gt; feature with a merging pipeline / $mergeCursors. I&apos;m not necessarily opposed to this particular renaming, but I don&apos;t think it necessarily eliminates the possibility for future confusion.&lt;/p&gt;</comment>
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