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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-71566] Skip using the legacy write block mechanism (MovePrimaryInProgress error)</title>
                <link>https://jira.mongodb.org/browse/SERVER-71566</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Before cloning the catalog data, &lt;a href=&quot;https://github.com/10gen/mongo/blob/0250aea7589466821087e7afc3735d16f606c700/src/mongo/db/s/move_primary_source_manager.cpp#L111&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the &lt;tt&gt;movePrimary&lt;/tt&gt;&lt;/a&gt; &lt;a href=&quot;https://github.com/10gen/mongo/blob/0250aea7589466821087e7afc3735d16f606c700/src/mongo/db/s/move_primary_source_manager.cpp#L111&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;operation blocks writes&lt;/a&gt; to ensure the consistency of the cloning information. To do that, &lt;a href=&quot;https://github.com/10gen/mongo/blob/0250aea7589466821087e7afc3735d16f606c700/src/mongo/db/s/database_sharding_state.h#L114-L133&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;a dedicated synchronization mechanism&lt;/a&gt; is exposed by the &lt;tt&gt;Database Sharding State&lt;/tt&gt;.&lt;/p&gt;

&lt;p&gt;Unlike the critical section, this mechanism ensures that any writes would fail with the &lt;tt&gt;MovePrimaryInProgress&lt;/tt&gt; error instead of waiting for a refresh of the database metadata (handling a &lt;tt&gt;StaleConfig&lt;/tt&gt; error). Since the critical section is already entered by the &lt;tt&gt;movePrimary&lt;/tt&gt; operation, the refresh will take a long time (mainly depending on the actual duration of the cloning of the catalog data).&lt;/p&gt;

&lt;p&gt;Once the &lt;em&gt;Online movePrimary&lt;/em&gt; project (PM-3025) will be completed, the actual time frame in which writes are blocked will be drastically reduced, and the &lt;tt&gt;movePrimary&lt;/tt&gt; implementation could adopt the critical section as a mechanism to block writes.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2192857">SERVER-71566</key>
            <summary>Skip using the legacy write block mechanism (MovePrimaryInProgress error)</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="backlog-server-sharding-emea">[DO NOT USE] Backlog - Sharding EMEA</assignee>
                                    <reporter username="antonio.fuschetto@mongodb.com">Antonio Fuschetto</reporter>
                        <labels>
                    </labels>
                <created>Wed, 23 Nov 2022 09:16:25 +0000</created>
                <updated>Mon, 27 Nov 2023 11:51:18 +0000</updated>
                            <resolved>Thu, 1 Jun 2023 17:36:30 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5905284" author="xgen-internal-githook" created="Mon, 27 Nov 2023 11:51:18 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Antonio Fuschetto&apos;, &apos;email&apos;: &apos;antonio.fuschetto@mongodb.com&apos;, &apos;username&apos;: &apos;afuschetto&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-77715&quot; title=&quot;Complete TODO listed in SERVER-71566&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-77715&quot;&gt;&lt;del&gt;SERVER-77715&lt;/del&gt;&lt;/a&gt; Complete TODO listed in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-71566&quot; title=&quot;Skip using the legacy write block mechanism (MovePrimaryInProgress error)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-71566&quot;&gt;&lt;del&gt;SERVER-71566&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4610b1aea19c41b124ad78e8fa83d6617807d84e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4610b1aea19c41b124ad78e8fa83d6617807d84e&lt;/a&gt;&lt;/p&gt;</comment>
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