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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-70196] The DocumentSourceMerge should contain a ShardVersion, not a ChunkVersion</title>
                <link>https://jira.mongodb.org/browse/SERVER-70196</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The document source merge &lt;a href=&quot;https://github.com/mongodb/mongo/blob/11351f564502a065049bb5aa062fd8a1b8ebff9a/src/mongo/db/pipeline/document_source_merge.h#L227&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;contains a chunk version&lt;/a&gt; currently. It uses this version in the shardsvr_process_interface to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/11351f564502a065049bb5aa062fd8a1b8ebff9a/src/mongo/db/pipeline/process_interface/shardsvr_process_interface.cpp#L70-L98&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;check that the epoch is up to date&lt;/a&gt;. In this check, the catalog cache time in store is advanced. Here, we should be using a ShardVersion so that a stale index cache will also be advanced.&lt;/p&gt;

&lt;p&gt;As part of this ticket, we should either talk to query or request their review to ensure this is behavior is alright.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2151082">SERVER-70196</key>
            <summary>The DocumentSourceMerge should contain a ShardVersion, not a ChunkVersion</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="allison.easton@mongodb.com">Allison Easton</reporter>
                        <labels>
                            <label>PM-2583-Milestone-3</label>
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                <created>Tue, 4 Oct 2022 09:03:36 +0000</created>
                <updated>Tue, 7 Feb 2023 15:02:25 +0000</updated>
                            <resolved>Tue, 7 Feb 2023 15:02:24 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5174132" author="allison.easton" created="Tue, 7 Feb 2023 15:02:25 +0000"  >&lt;p&gt;Since the target collection version in the document source merge is only used to check the epoch of the collection, we don&apos;t need to store the index version here.&lt;/p&gt;</comment>
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