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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-38361] Disable BSON obj validation while creating exhaust dummy request on sync source/server.</title>
                <link>https://jira.mongodb.org/browse/SERVER-38361</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, when we create&#160;exhaust dummy request, we parse the response data over &lt;a href=&quot;https://github.com/mongodb/mongo/blob/8a7614aca8d674cac906584d3157103190ad1310/src/mongo/transport/service_state_machine.cpp#L121&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt; which validates BSON obj&#160; if&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/8a7614aca8d674cac906584d3157103190ad1310/src/mongo/rpc/object_check.h#L57&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;serverGlobalParams.objcheck &lt;/a&gt; (i.e.)&#160;&lt;a href=&quot;https://docs.mongodb.com/manual/reference/configuration-options/#net.wireObjectCheck&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;net.wireObjectCheck&lt;/a&gt; is set. And, by default serverGlobalParams.objcheck is enabled.&#160; Validating BSON obj on the initial sync sync source is just an extra overhead. So, we should add a way to avoid BSON validation when we parse a previous response to create a synthetic exhaust request.&lt;/p&gt;</description>
                <environment></environment>
        <key id="642019">SERVER-38361</key>
            <summary>Disable BSON obj validation while creating exhaust dummy request on sync source/server.</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="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="3">Duplicate</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="suganthi.mani@mongodb.com">Suganthi Mani</reporter>
                        <labels>
                            <label>InitialSyncPerformance</label>
                    </labels>
                <created>Mon, 3 Dec 2018 16:02:52 +0000</created>
                <updated>Tue, 6 Dec 2022 03:11:49 +0000</updated>
                            <resolved>Mon, 3 Jun 2019 21:39:10 +0000</resolved>
                                    <version>4.1.3</version>
                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="2269683" author="jason.chan" created="Mon, 3 Jun 2019 21:39:10 +0000"  >&lt;p&gt;Closing this ticket in favor of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41481&quot; title=&quot;Return dbResponse object stored with exhaustNS and exhaustCursorId in receivedCommands&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41481&quot;&gt;&lt;del&gt;SERVER-41481&lt;/del&gt;&lt;/a&gt; and &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41482&quot; title=&quot;makeExhaustMessage should no longer call OpMsg::parse&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41482&quot;&gt;&lt;del&gt;SERVER-41482&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2176937" author="milkie" created="Mon, 11 Mar 2019 14:00:22 +0000"  >&lt;p&gt;I tried clarifying the description.&lt;/p&gt;</comment>
                            <comment id="2176932" author="milkie" created="Mon, 11 Mar 2019 13:59:00 +0000"  >&lt;p&gt;I understand now.  (The code itself refers to &quot;synthentic requests&quot; instead of dummy requests.)&lt;/p&gt;</comment>
                            <comment id="2176913" author="tess.avitabile" created="Mon, 11 Mar 2019 13:50:48 +0000"  >&lt;p&gt;No, validation of the previous response should never be performed when constructing the next dummy request for exhaust. We perform validation as part of parsing, in order to get the &lt;tt&gt;ok&lt;/tt&gt; and &lt;tt&gt;cursor&lt;/tt&gt; values. Instead, we will get the &lt;tt&gt;ok&lt;/tt&gt; and &lt;tt&gt;cursor&lt;/tt&gt; values from the previous response without performing validation.&lt;/p&gt;</comment>
                            <comment id="2176352" author="milkie" created="Fri, 8 Mar 2019 21:52:30 +0000"  >&lt;p&gt;Ah, so this ticket is to optionally allow the validation to be turned off, per request?&lt;/p&gt;</comment>
                            <comment id="2176348" author="tess.avitabile" created="Fri, 8 Mar 2019 21:49:29 +0000"  >&lt;p&gt;They are in use for any exhaust cursor.&lt;/p&gt;</comment>
                            <comment id="2176346" author="milkie" created="Fri, 8 Mar 2019 21:47:30 +0000"  >&lt;p&gt;Are &quot;exhaust dummy requests&quot; only generated for initial sync, or are they in use for any exhaust cursor?&lt;/p&gt;</comment>
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