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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-72688] $meta aggregate expression should be marked as unstable for API Version 1</title>
                <link>https://jira.mongodb.org/browse/SERVER-72688</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;$meta mostly exposes internal server implementation details and the behavior should not be considered stable.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2229271">SERVER-72688</key>
            <summary>$meta aggregate expression should be marked as unstable for API Version 1</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="13201">Fixed</resolution>
                                        <assignee username="naama.bareket@mongodb.com">Naama Bareket</assignee>
                                    <reporter username="arun.banala@mongodb.com">Arun Banala</reporter>
                        <labels>
                            <label>auto-reverted</label>
                            <label>neweng</label>
                    </labels>
                <created>Tue, 10 Jan 2023 18:08:09 +0000</created>
                <updated>Sun, 29 Oct 2023 21:28:28 +0000</updated>
                            <resolved>Mon, 30 Jan 2023 20:19:38 +0000</resolved>
                                                    <fixVersion>6.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="5144006" author="xgen-internal-githook" created="Thu, 26 Jan 2023 19:34:06 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Naama Bareket&apos;, &apos;email&apos;: &apos;naama.bareket@mongodb.com&apos;, &apos;username&apos;: &apos;naama-bareket&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-72688&quot; title=&quot;$meta aggregate expression should be marked as unstable for API Version 1&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-72688&quot;&gt;&lt;del&gt;SERVER-72688&lt;/del&gt;&lt;/a&gt; $meta aggregate expression should be marked as unstable for API Version 1&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/20fb7faeb7f3c724440faaca1bd494e3c3c84cc8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/20fb7faeb7f3c724440faaca1bd494e3c3c84cc8&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5142136" author="xgen-buildbaron-user" created="Thu, 26 Jan 2023 10:30:11 +0000"  >&lt;p&gt;Ticket re-opened due to revert. &lt;a href=&quot;https://evergreen.mongodb.com/task/mongodb_mongo_master_linux_64_debug_required_jsCore_auth_2264da942fe2e4cbd0ee10742ce14758bd8303ef_23_01_25_23_57_49&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;jsCore_auth&lt;/a&gt; began a consistent failure of jstests/core/query/find/find_projection_meta_errors.js&lt;/p&gt;</comment>
                            <comment id="5142134" author="xgen-internal-githook" created="Thu, 26 Jan 2023 10:25:43 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;auto-revert-processor&apos;, &apos;email&apos;: &apos;dev-prod-dag@mongodb.com&apos;, &apos;username&apos;: &apos;&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-72688&quot; title=&quot;$meta aggregate expression should be marked as unstable for API Version 1&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-72688&quot;&gt;&lt;del&gt;SERVER-72688&lt;/del&gt;&lt;/a&gt; $meta aggregate expression should be marked as unstable for API Version 1&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 2264da942fe2e4cbd0ee10742ce14758bd8303ef.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/cc0dc721042c7ffa2d00a0f414d65c650f646918&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/cc0dc721042c7ffa2d00a0f414d65c650f646918&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5141585" author="xgen-internal-githook" created="Wed, 25 Jan 2023 23:57:53 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Naama Bareket&apos;, &apos;email&apos;: &apos;naama.bareket@mongodb.com&apos;, &apos;username&apos;: &apos;naama-bareket&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-72688&quot; title=&quot;$meta aggregate expression should be marked as unstable for API Version 1&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-72688&quot;&gt;&lt;del&gt;SERVER-72688&lt;/del&gt;&lt;/a&gt; $meta aggregate expression should be marked as unstable for API Version 1&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2264da942fe2e4cbd0ee10742ce14758bd8303ef&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2264da942fe2e4cbd0ee10742ce14758bd8303ef&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5112492" author="david.storch" created="Fri, 13 Jan 2023 18:27:56 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=arun.banala%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;arun.banala@mongodb.com&quot;&gt;arun.banala@mongodb.com&lt;/a&gt;, oh, I didn&apos;t realize that &lt;tt&gt;$text&lt;/tt&gt; and &lt;tt&gt;$search&lt;/tt&gt; are excluded from API version 1! In that case, agreed that we can just remove &lt;tt&gt;$meta&lt;/tt&gt; entirely from API version 1. If we introduce a new user-facing meta-projection, we can decide at that point whether it should be explicitly included in API v1.&lt;/p&gt;</comment>
                            <comment id="5111983" author="david.storch" created="Fri, 13 Jan 2023 15:50:18 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=arun.banala%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;arun.banala@mongodb.com&quot;&gt;arun.banala@mongodb.com&lt;/a&gt; if I understand this ticket correctly, then I think it should be closed as &quot;Won&apos;t Do&quot;. There are various &lt;tt&gt;$meta&lt;/tt&gt; projections that are absolutely user-facing, and therefore seem to belong in API Version 1:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;&quot;textScore&quot;&lt;/li&gt;
	&lt;li&gt;&quot;searchScore&quot;&lt;/li&gt;
	&lt;li&gt;&quot;searchHighlights&quot;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;I suppose we could also try to change things so that the &lt;tt&gt;$meta&lt;/tt&gt;-projections that are intended to be internal (e.g. &quot;randVal&quot; or &quot;recordId&quot;) are excluded from API Version 1 whereas the user-facing &lt;tt&gt;$meta&lt;/tt&gt;-projections I listed above are included in API Version 1.&lt;/p&gt;</comment>
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