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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-56191] Integrate SBE Debugger into the codebase</title>
                <link>https://jira.mongodb.org/browse/SERVER-56191</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, it is quite tricky for the developer to debug SBE plans. While we have some existing solutions like SBE plan debug print and execution stats, it is not possible to accurately reconstruct history of plan execution from them.&lt;/p&gt;

&lt;p&gt;As a Skunkworks project, &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=nikita.lapkov&quot; class=&quot;user-hover&quot; rel=&quot;nikita.lapkov&quot;&gt;nikita.lapkov&lt;/a&gt; developed a tool to solve this problem, SBE Flight Recorder. This tool allows the developer to view history of SBE plan execution and inspect:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;returned &lt;tt&gt;PlanState&lt;/tt&gt; s from &lt;tt&gt;PlanStages&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;values of slots and expressions&lt;/li&gt;
	&lt;li&gt;state of SBE VM stack during instruction execution&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;After the presentation of the solution, SBE team agreed that this tool would be useful for the debugging of SBE plans in the future. We should integrate SBE Flight Recorder into our codebase. Currently, the code for it is stored in a separate branch: &lt;a href=&quot;https://github.com/laplab/mongo/tree/flight-recorder&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/laplab/mongo/tree/flight-recorder&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1683736">SERVER-56191</key>
            <summary>Integrate SBE Debugger into the codebase</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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>
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                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="nikita.lapkov@mongodb.com">Nikita Lapkov</reporter>
                        <labels>
                    </labels>
                <created>Tue, 20 Apr 2021 11:29:36 +0000</created>
                <updated>Tue, 6 Dec 2022 01:23:48 +0000</updated>
                            <resolved>Thu, 25 Nov 2021 10:52:15 +0000</resolved>
                                                                                        <votes>0</votes>
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