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    <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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            <title>[SERVER-61981] supporting_unique_index_check_is_versioned.js assumes that a refresh always reads from the primary node of the CSRS</title>
                <link>https://jira.mongodb.org/browse/SERVER-61981</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The test wrongly assumes that &lt;a href=&quot;https://github.com/mongodb/mongo/blob/80b2c2a100cb4925f02a603333cec26803187536/jstests/sharding/supporting_unique_index_check_is_versioned.js#L171-L174&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the &lt;tt&gt;moveChunk&lt;/tt&gt; command issued by a completely fresh &lt;tt&gt;mongos&lt;/tt&gt; always succeeds.&lt;/a&gt; This is not always true: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/80b2c2a100cb4925f02a603333cec26803187536/src/mongo/s/commands/cluster_move_chunk_cmd.cpp#L102-L104&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this refresh&lt;/a&gt; at the beginning of the &lt;tt&gt;moveChunk&lt;/tt&gt; command in the &lt;tt&gt;mongos&lt;/tt&gt; might not see that &lt;a href=&quot;https://github.com/mongodb/mongo/blob/80b2c2a100cb4925f02a603333cec26803187536/jstests/sharding/supporting_unique_index_check_is_versioned.js#L166&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the collection was already sharded&lt;/a&gt; and throw an exception: the reason is that the &lt;tt&gt;CatalogCache&lt;/tt&gt;&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/80b2c2a100cb4925f02a603333cec26803187536/src/mongo/s/catalog/sharding_catalog_client_impl.cpp#L333-L339&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;reads from the config server&lt;/a&gt; with &lt;a href=&quot;https://github.com/mongodb/mongo/blob/80b2c2a100cb4925f02a603333cec26803187536/src/mongo/s/catalog/sharding_catalog_client_impl.cpp#L91&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;Nearest&lt;/tt&gt;&lt;/a&gt; read preference so it might end up reading the majority committed information from a secondary node of the CSRS that hasn&apos;t replicated the&#160;&lt;tt&gt;shardCollection&lt;/tt&gt; operation yet.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1946465">SERVER-61981</key>
            <summary>supporting_unique_index_check_is_versioned.js assumes that a refresh always reads from the primary node of the CSRS</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="3">Duplicate</resolution>
                                        <assignee username="backlog-server-sharding-emea">[DO NOT USE] Backlog - Sharding EMEA</assignee>
                                    <reporter username="sergi.mateo-bellido@mongodb.com">Sergi Mateo Bellido</reporter>
                        <labels>
                    </labels>
                <created>Fri, 10 Dec 2021 14:17:56 +0000</created>
                <updated>Tue, 6 Dec 2022 00:44:26 +0000</updated>
                            <resolved>Thu, 16 Dec 2021 12:42:19 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
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