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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-76299] Report writeConflicts in serverStatus on secondaries</title>
                <link>https://jira.mongodb.org/browse/SERVER-76299</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Primary &lt;a href=&quot;https://github.com/mongodb/mongo/blob/983d4ca5e0c50d644c64be42bd59df481dee0a57/src/mongo/db/curop_metrics.cpp#L68-L69&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;records the number of writeConflicts in serverStatus&lt;/a&gt; by calling &lt;a href=&quot;https://github.com/mongodb/mongo/blob/983d4ca5e0c50d644c64be42bd59df481dee0a57/src/mongo/db/curop_metrics.cpp#L51&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;recordCurOpMetrics()&lt;/a&gt; in the write path, however secondaries never do that. It is helpful to show writeConflicts counter in serverStatus on secondaries since it can help identify issues during secondary oplog application. For example, we saw a problem on secondary that due to the transaction size exceeding cache threshold, the oplog application got stuck in the writeConflict retry loop. Not recording writeConflicts on secondaries made it hard to confirm the issue and we had to rely on other indirect evidences.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2318827">SERVER-76299</key>
            <summary>Report writeConflicts in serverStatus on secondaries</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="13201">Fixed</resolution>
                                        <assignee username="wenbin.zhu@mongodb.com">Wenbin Zhu</assignee>
                                    <reporter username="wenbin.zhu@mongodb.com">Wenbin Zhu</reporter>
                        <labels>
                            <label>repl-shortlist</label>
                    </labels>
                <created>Wed, 19 Apr 2023 16:39:06 +0000</created>
                <updated>Sun, 29 Oct 2023 21:22:48 +0000</updated>
                            <resolved>Fri, 14 Jul 2023 15:41:45 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                    <fixVersion>7.0.1</fixVersion>
                    <fixVersion>4.4.24</fixVersion>
                    <fixVersion>5.0.20</fixVersion>
                    <fixVersion>6.0.9</fixVersion>
                                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="5639156" author="xgen-internal-githook" created="Wed, 16 Aug 2023 21:26:28 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Wenbin Zhu&apos;, &apos;email&apos;: &apos;wenbin.zhu@mongodb.com&apos;, &apos;username&apos;: &apos;WenbinZhu&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76299&quot; title=&quot;Report writeConflicts in serverStatus on secondaries&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76299&quot;&gt;&lt;del&gt;SERVER-76299&lt;/del&gt;&lt;/a&gt; Report writeConflicts in serverStatus on secondaries.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 251dfc8c42679cd1c3527943bc641214cfcf1c1f)&lt;br/&gt;
Branch: v7.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d6f6546f16481afc0e8f8aedaaacbbdff40d7639&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d6f6546f16481afc0e8f8aedaaacbbdff40d7639&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5610864" author="xgen-internal-githook" created="Thu, 3 Aug 2023 16:36:10 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Wenbin Zhu&apos;, &apos;email&apos;: &apos;wenbin.zhu@mongodb.com&apos;, &apos;username&apos;: &apos;WenbinZhu&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76299&quot; title=&quot;Report writeConflicts in serverStatus on secondaries&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76299&quot;&gt;&lt;del&gt;SERVER-76299&lt;/del&gt;&lt;/a&gt; Report writeConflicts in serverStatus on secondaries.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 251dfc8c42679cd1c3527943bc641214cfcf1c1f)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f3271a9de99f2efd8da1bced95c7b15360110b4a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f3271a9de99f2efd8da1bced95c7b15360110b4a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5608996" author="xgen-internal-githook" created="Wed, 2 Aug 2023 21:59:56 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Wenbin Zhu&apos;, &apos;email&apos;: &apos;wenbin.zhu@mongodb.com&apos;, &apos;username&apos;: &apos;WenbinZhu&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76299&quot; title=&quot;Report writeConflicts in serverStatus on secondaries&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76299&quot;&gt;&lt;del&gt;SERVER-76299&lt;/del&gt;&lt;/a&gt; Report writeConflicts in serverStatus on secondaries.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 251dfc8c42679cd1c3527943bc641214cfcf1c1f)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/33f72c76817fe2527d86117da0b0ef89319e369d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/33f72c76817fe2527d86117da0b0ef89319e369d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5608562" author="xgen-internal-githook" created="Wed, 2 Aug 2023 19:21:18 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Wenbin Zhu&apos;, &apos;email&apos;: &apos;wenbin.zhu@mongodb.com&apos;, &apos;username&apos;: &apos;WenbinZhu&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76299&quot; title=&quot;Report writeConflicts in serverStatus on secondaries&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76299&quot;&gt;&lt;del&gt;SERVER-76299&lt;/del&gt;&lt;/a&gt; Report writeConflicts in serverStatus on secondaries.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 251dfc8c42679cd1c3527943bc641214cfcf1c1f)&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/862a176a63f316a0316963b6b459848e5cdd4366&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/862a176a63f316a0316963b6b459848e5cdd4366&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5565923" author="xgen-internal-githook" created="Fri, 14 Jul 2023 05:44:02 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Wenbin Zhu&apos;, &apos;email&apos;: &apos;wenbin.zhu@mongodb.com&apos;, &apos;username&apos;: &apos;WenbinZhu&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76299&quot; title=&quot;Report writeConflicts in serverStatus on secondaries&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76299&quot;&gt;&lt;del&gt;SERVER-76299&lt;/del&gt;&lt;/a&gt; Report writeConflicts in serverStatus on secondaries.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/251dfc8c42679cd1c3527943bc641214cfcf1c1f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/251dfc8c42679cd1c3527943bc641214cfcf1c1f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5361540" author="louis.williams" created="Thu, 20 Apr 2023 08:11:03 +0000"  >&lt;p&gt;A general improvement for both primaries and secondaries would be to increment the global writeConflict counter immediately without waiting until recordCurOpMetrics is called.&lt;/p&gt;</comment>
                            <comment id="5360006" author="JIRAUSER1258790" created="Wed, 19 Apr 2023 18:03:02 +0000"  >&lt;p&gt;Note: this is mostly based on code inspection, implementer should probably double check this behavior first.&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="2391652">SERVER-78972</issuekey>
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                                        <issuelink>
            <issuekey id="2330548">SERVER-76774</issuekey>
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            <issuekey id="2331547">SERVER-76818</issuekey>
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