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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-47065] Remove &apos;use44SortKeys&apos; flag from QueryRequest and AggregationRequest in 4.7 </title>
                <link>https://jira.mongodb.org/browse/SERVER-47065</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The serialization format for sort keys changed between 4.2 and 4.4. In order to ensure that this did not disrupt the upgrade or downgrade process between 4.2 and 4.4, we introduced a new &lt;tt&gt;use44SortKeys&lt;/tt&gt; flag on the aggregate command, as well as a similar &lt;tt&gt;_use44SortKeys&lt;/tt&gt; flag on the find command.&lt;/p&gt;

&lt;p&gt;These flags are no longer necessary in 4.6, since a 4.6 node does not need to remain compatible with 4.2. Most of the relevant code related to the 4.2/4.4 upgrade will be deleted under related ticket &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43361&quot; title=&quot;Remove compatibility for 4.2 $sortKey format&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43361&quot;&gt;&lt;del&gt;SERVER-43361&lt;/del&gt;&lt;/a&gt;. However, a 4.6 node still needs to be able to accept find and agg commands with the &lt;tt&gt;use44SortKeys&lt;/tt&gt; flag. During upgrade, a 4.4 mongos or mongod might send this flag to a 4.6 mongod. Therefore, a 4.6 will tolerate the presence of the flag, but can completely ignore its value.&lt;/p&gt;

&lt;p&gt;In 4.7 development, we can finally remove all remaining traces of &lt;tt&gt;use44SortKeys&lt;/tt&gt;, since a 4.8 node should never receive a command with this flag set.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1287641">SERVER-47065</key>
            <summary>Remove &apos;use44SortKeys&apos; flag from QueryRequest and AggregationRequest in 4.7 </summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="adi.agrawal@mongodb.com">Adi Agrawal</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                            <label>qexec-team</label>
                    </labels>
                <created>Mon, 23 Mar 2020 22:40:50 +0000</created>
                <updated>Sun, 29 Oct 2023 22:10:25 +0000</updated>
                            <resolved>Wed, 25 Aug 2021 13:20:38 +0000</resolved>
                                                    <fixVersion>5.1.0-rc0</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4108022" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:54:37 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="4021551" author="kyle.suarez" created="Wed, 25 Aug 2021 13:20:38 +0000"  >&lt;p&gt;Closing this as it appears to be merged into master. &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=eric.cox&quot; class=&quot;user-hover&quot; rel=&quot;eric.cox&quot;&gt;eric.cox&lt;/a&gt;, please reopen if I&apos;m missing something here.&lt;/p&gt;</comment>
                            <comment id="4011400" author="xgen-internal-githook" created="Thu, 19 Aug 2021 23:14:23 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Adityavardhan Agrawal&apos;, &apos;email&apos;: &apos;adi.agrawal@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47065&quot; title=&quot;Remove &amp;#39;use44SortKeys&amp;#39; flag from QueryRequest and AggregationRequest in 4.7 &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47065&quot;&gt;&lt;del&gt;SERVER-47065&lt;/del&gt;&lt;/a&gt; remove use44SortKeys&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e9ebf0db9011d7335339ab671c57b318d66eeb49&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e9ebf0db9011d7335339ab671c57b318d66eeb49&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3906085" author="eric.cox" created="Mon, 28 Jun 2021 20:21:27 +0000"  >&lt;p&gt;Marking this as blocked on&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56366&quot; title=&quot;Update FCV constants in server code base following 5.0 branch&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56366&quot;&gt;&lt;del&gt;SERVER-56366&lt;/del&gt;&lt;/a&gt; due to the shell not being updated yet to point last-lts to 5.0.&lt;/p&gt;</comment>
                            <comment id="2993341" author="david.storch" created="Mon, 23 Mar 2020 22:42:54 +0000"  >&lt;p&gt;The proper fixVersion for this ticket is &quot;4.7 Required&quot;, but that fixVersion doesn&apos;t exist yet. I&apos;ve temporarily marked it as &quot;4.5 Required&quot; so that we remember to move this into the &quot;4.7 Required&quot; bucket once the latter fixVersion becomes available.&lt;/p&gt;</comment>
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