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    <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-84092] Support LOGV2 serialization for RuntimeEnvironment and PlanStageData</title>
                <link>https://jira.mongodb.org/browse/SERVER-84092</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently classed PlanStageData and RuntimeEnvironment have debugString() methods:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blame/2ce7d457434f2b81924c32ead1fefce7d9e3a949/src/mongo/db/query/sbe_stage_builder_plan_data.h#L299&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blame/2ce7d457434f2b81924c32ead1fefce7d9e3a949/src/mongo/db/query/sbe_stage_builder_plan_data.h#L299&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/exec/sbe/expressions/runtime_environment.h#L193&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/master/src/mongo/db/exec/sbe/expressions/runtime_environment.h#L193&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;However, they have different signatures:&lt;/p&gt;

&lt;p&gt;std::string debugString() and&#160;&lt;/p&gt;

&lt;p&gt;void debugString(StringBuilder*).&lt;/p&gt;

&lt;p&gt;RuntimeEnvironment is accepting StringBuilder to avoid extra allocations when serializing it in PlanStageData::debugString().&lt;/p&gt;

&lt;p&gt;What we should do is:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Add serialize(fmt::memory_buffer&amp;amp;) method to both functions. This way they can be serialized to already existing buffer, avoiding allocations and this signature is supported by LOGV2: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/logv2/attribute_storage.h#L173&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/master/src/mongo/logv2/attribute_storage.h#L173&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;Add std::string debugString() to both classes, implementing it via serialize(). This way we can keep old signature.&lt;/li&gt;
&lt;/ol&gt;
</description>
                <environment></environment>
        <key id="2522619">SERVER-84092</key>
            <summary>Support LOGV2 serialization for RuntimeEnvironment and PlanStageData</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="ivan.fefer@mongodb.com">Ivan Fefer</reporter>
                        <labels>
                            <label>neweng</label>
                    </labels>
                <created>Tue, 12 Dec 2023 14:10:14 +0000</created>
                <updated>Wed, 13 Dec 2023 01:01:41 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>4</watches>
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