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    <link>https://jira.mongodb.org</link>
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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-34496] Await all operations committed in ShardingTest::checkUUIDsConsistent hook (lookup.js)</title>
                <link>https://jira.mongodb.org/browse/SERVER-34496</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;tt&gt;jstests/aggregation/sources/lookup/lookup.js&lt;/tt&gt; &lt;a href=&quot;https://github.com/mongodb/mongo/blob/99c220e/jstests/aggregation/sources/lookup/lookup.js#L1095&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;manually creates a ShardingTest&lt;/a&gt;, and because it can run in a read concern majority passthrough, the checkUUIDs hook can be overriden to run with majority read concern, which it does not support because the metadata collections it reads from are written with local write concern. &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33876&quot; title=&quot;Change ShardingTest to start shards as single-node replica sets&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33876&quot;&gt;&lt;del&gt;SERVER-33876&lt;/del&gt;&lt;/a&gt; made ShardingTest default to 1 node replica sets instead of standalone nodes, which exposes this problem because now locally written data is not guaranteed to be immediately seen by majority reads.&lt;/p&gt;

&lt;p&gt;The checkUUIDs hook should await all operations to be committed before checking the shard metadata collections.&lt;/p&gt;</description>
                <environment></environment>
        <key id="528659">SERVER-34496</key>
            <summary>Await all operations committed in ShardingTest::checkUUIDsConsistent hook (lookup.js)</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="blake.oler@mongodb.com">Blake Oler</assignee>
                                    <reporter username="jack.mulrow@mongodb.com">Jack Mulrow</reporter>
                        <labels>
                    </labels>
                <created>Mon, 16 Apr 2018 17:05:40 +0000</created>
                <updated>Sun, 29 Oct 2023 22:32:40 +0000</updated>
                            <resolved>Fri, 20 Apr 2018 15:03:20 +0000</resolved>
                                                    <fixVersion>3.7.6</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1870078" author="xgen-internal-githook" created="Fri, 20 Apr 2018 15:01:04 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;, &apos;name&apos;: &apos;Blake Oler&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34496&quot; title=&quot;Await all operations committed in ShardingTest::checkUUIDsConsistent hook (lookup.js)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34496&quot;&gt;&lt;del&gt;SERVER-34496&lt;/del&gt;&lt;/a&gt; Await all operations committed in ShardingTest::checkUUIDsConsistent hook&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ebfdd0f68c1c9477cf5795bd07256d596fea62c5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ebfdd0f68c1c9477cf5795bd07256d596fea62c5&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1870072" author="max.hirschhorn@10gen.com" created="Fri, 20 Apr 2018 14:58:07 +0000"  >&lt;p&gt;Would we want to instead change the &lt;tt&gt;set_read_and_write_concerns.js&lt;/tt&gt; override method to not inject a read concern or write concern when the connection is to a mongos process and the operation is against the &quot;admin&quot; or &quot;config&quot; databases? We had changed the &lt;tt&gt;set_read_preference_secondary.js&lt;/tt&gt; override method to behave this way in &lt;a href=&quot;https://github.com/mongodb/mongo/commit/fe88a7402503f76b43c7ee71ef45b4ac0b9e3db7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;fe88a74&lt;/a&gt; as part of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32920&quot; title=&quot;Avoid overriding read preference for the config server in passthrough tests.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32920&quot;&gt;&lt;del&gt;SERVER-32920&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Edit&lt;/b&gt;: Nevermind, I like the idea of having the data consistency check wait for replication in order to ensure the data is visible at any read concern.&lt;/p&gt;</comment>
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