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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-50905] Add RecordId type in SBE</title>
                <link>https://jira.mongodb.org/browse/SERVER-50905</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently we use NumberInt64 as an SBE type when placing a RecordId into a slot. This practice is quite fragile. For example, if we need to filter on a RecordId type, any 64-bits numeric value can be interpreted as a valid recordId. Moreover, RecordId&apos;s can participate in arithmetic operations, which doesn&apos;t make a lot of sense too. Also, if the underlaying storage type for the RecordId is changed from a 64-bits integer to something else, a big layer of the SBE engine will have to be modified to take it into account. Should we have a dedicated RecordId type in SBE with its own semantics, such a change would be much more manageable.&lt;/p&gt;

&lt;p&gt;As part of this ticket we will need to:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Add a new RecordId type to sbe::value::TypeTags enum.&lt;/li&gt;
	&lt;li&gt;Create a&#160;isRecordId() helper function.&lt;/li&gt;
	&lt;li&gt;Create a new isRecordId() VM instruction.&lt;/li&gt;
	&lt;li&gt;Update&#160;compareValue(), numericCast(), numericConvLossless(), tagToType(),&#160;writeTagToStream(),&#160;writeValueToStream(),&#160;hashValue() to handle the new type.&lt;/li&gt;
	&lt;li&gt;Update PlanExecutorSBE &lt;a href=&quot;https://github.com/mongodb/mongo/blob/15542a4c9a523ff58ea0a0c5d40b834dee304bfa/src/mongo/db/query/plan_executor_sbe.cpp#L210&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/15542a4c9a523ff58ea0a0c5d40b834dee304bfa/src/mongo/db/query/plan_executor_sbe.cpp#L269&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt; and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/15542a4c9a523ff58ea0a0c5d40b834dee304bfa/src/mongo/db/query/plan_executor_sbe.cpp#L306&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;Update index and collection scan stages to store the RecordId using the new type (note &lt;a href=&quot;https://github.com/mongodb/mongo/blob/15542a4c9a523ff58ea0a0c5d40b834dee304bfa/src/mongo/db/exec/sbe/stages/scan.cpp#L187&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this&lt;/a&gt; check as well).&lt;/li&gt;
	&lt;li&gt;Modify generic index scan builder &lt;a href=&quot;https://github.com/mongodb/mongo/blob/15542a4c9a523ff58ea0a0c5d40b834dee304bfa/src/mongo/db/query/sbe_stage_builder_index_scan.cpp#L605&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt; and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/15542a4c9a523ff58ea0a0c5d40b834dee304bfa/src/mongo/db/query/sbe_stage_builder_index_scan.cpp#L613&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;.&lt;/li&gt;
&lt;/ol&gt;
</description>
                <environment></environment>
        <key id="1473259">SERVER-50905</key>
            <summary>Add RecordId type in SBE</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="nikita.lapkov@mongodb.com">Nikita Lapkov</assignee>
                                    <reporter username="anton.korshunov@mongodb.com">Anton Korshunov</reporter>
                        <labels>
                            <label>qexec-team</label>
                    </labels>
                <created>Mon, 14 Sep 2020 07:10:33 +0000</created>
                <updated>Sun, 29 Oct 2023 22:03:16 +0000</updated>
                            <resolved>Mon, 9 Nov 2020 13:00:54 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3481323" author="xgen-internal-githook" created="Mon, 9 Nov 2020 12:38:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Nikita Lapkov&apos;, &apos;email&apos;: &apos;nikita.lapkov@mongodb.com&apos;, &apos;username&apos;: &apos;laplab&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-50905&quot; title=&quot;Add RecordId type in SBE&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-50905&quot;&gt;&lt;del&gt;SERVER-50905&lt;/del&gt;&lt;/a&gt;: Add RecordId type in SBE&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a4c597067a26e71859ca07de33dacde98c1747f1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a4c597067a26e71859ca07de33dacde98c1747f1&lt;/a&gt;&lt;/p&gt;</comment>
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