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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>[DOCS-16119] [Server] Re-enable agg_merge_when_not_matched_insert.js in config_fuzzer passthrough suites</title>
                <link>https://jira.mongodb.org/browse/DOCS-16119</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>    &lt;div class=&quot;panel&quot; style=&quot;background-color: #c2d2c2;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;background-color: #239eb0;&quot;&gt;&lt;b&gt;Original Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;/div&gt;
&lt;p&gt;    This has changed the `maxCatchUpPercentageBeforeBlockingWrites` parameter to be settable both at startup (as before) and at runtime (new). We should update the server parameters doc section about this parameter. Here is the link to the doc in question: &lt;a href=&quot;https://www.mongodb.com/docs/manual/reference/parameters/#mongodb-parameter-param.maxCatchUpPercentageBeforeBlockingWrites&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://www.mongodb.com/docs/manual/reference/parameters/#mongodb-parameter-param.maxCatchUpPercentageBeforeBlockingWrites&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;We should replace the line:&lt;br/&gt;
&quot;You cannot change &lt;br/&gt;
maxCatchUpPercentageBeforeBlockingWrites&lt;br/&gt;
 during runtime.&quot;&lt;br/&gt;
With:&lt;br/&gt;
&quot;During runtime, you can also set the parameter with the setParameter command:&lt;/p&gt;

&lt;p&gt;db.adminCommand( &lt;/p&gt;
{ setParameter: 1, maxCatchUpPercentageBeforeBlockingWrites: 20}
&lt;p&gt; )&quot;&lt;/p&gt;

&lt;p&gt;Similar to the last two sentences in this section: &lt;a href=&quot;https://www.mongodb.com/docs/manual/reference/parameters/#mongodb-parameter-param.enableShardedIndexConsistencyCheck&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://www.mongodb.com/docs/manual/reference/parameters/#mongodb-parameter-param.enableShardedIndexConsistencyCheck&lt;/a&gt;.&lt;br/&gt;
Though we should specify that this is only settable at runtime from 7.1.&lt;/p&gt;

&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    The test (which performs concurrent user writes an chunk migrations)is currently &lt;a href=&quot;https://github.com/mongodb/mongo/blob/188549516c293b65c2c3cba5ae05a573b2eab460/jstests/concurrency/fsm_workloads/agg_merge_when_not_matched_insert.js#L14-L15&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;blacklisted&lt;/a&gt; from config fuzzer passthrough suites because it is sensitive to specific values of a threshold parameter (details described &lt;a href=&quot;https://jira.mongodb.org/browse/BF-27441?focusedCommentId=5126647&amp;amp;page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-5126647&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;here&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;In order to re-enable it, we can either tolerate timeout errors or exclude the execution of migration when the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/188549516c293b65c2c3cba5ae05a573b2eab460/src/mongo/db/s/sharding_runtime_d_params.idl#L114-L125&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;server parameter&lt;/a&gt; regulating the migration goes below a threshold value (to be qualified).&lt;/p&gt;
</description>
                <environment></environment>
        <key id="2337089">DOCS-16119</key>
            <summary>[Server] Re-enable agg_merge_when_not_matched_insert.js in config_fuzzer passthrough suites</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="13201">Fixed</resolution>
                                        <assignee username="alison.huh@mongodb.com">Alison Huh</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                            <label>quick-win</label>
                    </labels>
                <created>Wed, 10 May 2023 15:05:24 +0000</created>
                <updated>Mon, 13 Nov 2023 17:32:29 +0000</updated>
                            <resolved>Wed, 12 Jul 2023 14:15:29 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                    <fixVersion>7.0.1</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5642474" author="allison.easton" created="Fri, 18 Aug 2023 09:47:46 +0000"  >&lt;p&gt;Hi! We ended up backporting &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-73866&quot; title=&quot;Re-enable agg_merge_when_not_matched_insert.js in config_fuzzer passthrough suites&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-73866&quot;&gt;&lt;del&gt;SERVER-73866&lt;/del&gt;&lt;/a&gt; to 7.0.1. This means that the docs should be updated for 7.1 as well as 7.0.1 (or at least we should change the update saying the parameter is settable at runtime on versions 7.0.1+ rather than 7.1+.&lt;/p&gt;</comment>
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                            <issuelinktype id="10320">
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            <issuekey id="2260164">SERVER-73866</issuekey>
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                            <customfieldvalue>This has changed the `maxCatchUpPercentageBeforeBlockingWrites` parameter to be settable both at startup (as before) and at runtime (new). We should update the server parameters doc section about this parameter. Here is the link to the doc in question: &lt;a href=&quot;https://www.mongodb.com/docs/manual/reference/parameters/#mongodb-parameter-param.maxCatchUpPercentageBeforeBlockingWrites&quot;&gt;https://www.mongodb.com/docs/manual/reference/parameters/#mongodb-parameter-param.maxCatchUpPercentageBeforeBlockingWrites&lt;/a&gt;&lt;br/&gt;
&lt;br/&gt;
We should replace the line:&lt;br/&gt;
&amp;quot;You cannot change &lt;br/&gt;
maxCatchUpPercentageBeforeBlockingWrites&lt;br/&gt;
&amp;nbsp;during runtime.&amp;quot;&lt;br/&gt;
With:&lt;br/&gt;
&amp;quot;During runtime, you can also set the parameter with the setParameter command:&lt;br/&gt;
&lt;br/&gt;
db.adminCommand( { setParameter: 1, maxCatchUpPercentageBeforeBlockingWrites: 20} )&amp;quot;&lt;br/&gt;
&lt;br/&gt;
Similar to the last two sentences in this section: &lt;a href=&quot;https://www.mongodb.com/docs/manual/reference/parameters/#mongodb-parameter-param.enableShardedIndexConsistencyCheck&quot;&gt;https://www.mongodb.com/docs/manual/reference/parameters/#mongodb-parameter-param.enableShardedIndexConsistencyCheck&lt;/a&gt;.&lt;br/&gt;
Though we should specify that this is only settable at runtime from 7.1.&lt;br/&gt;
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