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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-64571] Support executing explain on views directly against shardsvrs</title>
                <link>https://jira.mongodb.org/browse/SERVER-64571</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, shardsvrs return CommandOnShardedViewNotSupportedOnMongod for explain on a view (they expect mongos to resolve the view and re-execute the explain against the underlying collection). Note shardsvrs already support regular (non-explain) commands directly against views.&lt;/p&gt;

&lt;p&gt;This is required to upgrade Serverless&apos;s architecture to support sharding.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2003218">SERVER-64571</key>
            <summary>Support executing explain on views directly against shardsvrs</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                            <label>phase3</label>
                            <label>read-only-views</label>
                            <label>replace-atlas-proxy-w-mongoq</label>
                            <label>serverless-routing</label>
                    </labels>
                <created>Wed, 16 Mar 2022 17:22:18 +0000</created>
                <updated>Thu, 6 Apr 2023 20:29:47 +0000</updated>
                            <resolved>Thu, 6 Apr 2023 20:29:47 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="5331147" author="janna.golden" created="Thu, 6 Apr 2023 20:29:47 +0000"  >&lt;p&gt;This work will not be needed in light of the invisible sharding initiative&apos;s goal of making all clusters sharded by default in 8.0, with an embedded router. Serverless will no longer need to upgrade to an interim architecture where the client needs to talk directly to a shardsvr without a router process.&lt;/p&gt;</comment>
                            <comment id="4434911" author="kyle.suarez" created="Fri, 25 Mar 2022 13:19:25 +0000"  >&lt;p&gt;Thanks Esha, I added some dependency links to this ticket and the parent project. Since we don&apos;t need to schedule this immediately, I&apos;m moving it back to the Open state on the backlog.&lt;/p&gt;</comment>
                            <comment id="4432180" author="esha.maharishi@10gen.com" created="Thu, 24 Mar 2022 13:52:29 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kyle.suarez&quot; class=&quot;user-hover&quot; rel=&quot;kyle.suarez&quot;&gt;kyle.suarez&lt;/a&gt; sounds good. Two of the other tracks end with &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64866&quot; title=&quot;Split and merge at tenant boundaries support changing a tenant&amp;#39;s config shard&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64866&quot;&gt;SERVER-64866&lt;/a&gt; (which notably depends on PM-2290 &quot;Make dedicated config servers optional for sharded clusters&quot;) and &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64869&quot; title=&quot;Test that replica set can be converted to shardsvr/configsvr with no application downtime&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64869&quot;&gt;&lt;del&gt;SERVER-64869&lt;/del&gt;&lt;/a&gt;, which have their dependencies linked.&lt;/p&gt;

&lt;p&gt;Ultimately the timeline for this and &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64572&quot; title=&quot;Support $merge against secondaries when talking directly to shardsvrs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64572&quot;&gt;&lt;del&gt;SERVER-64572&lt;/del&gt;&lt;/a&gt; depend on when we&apos;ll upgrade the mongod layer to shardsvrs in production, which also depends on Cloud&apos;s development timelines and whether we want to wait to do the upgrade until we&apos;re ready to switch Atlas Proxy with mongoq. It sounds good to keep this on the backlog for now.&lt;/p&gt;</comment>
                            <comment id="4430735" author="kyle.suarez" created="Wed, 23 Mar 2022 20:24:46 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=esha.maharishi&quot; class=&quot;user-hover&quot; rel=&quot;esha.maharishi&quot;&gt;esha.maharishi&lt;/a&gt;, for now I am keeping it in the &quot;Phase 3&quot; epic, along with &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64572&quot; title=&quot;Support $merge against secondaries when talking directly to shardsvrs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64572&quot;&gt;&lt;del&gt;SERVER-64572&lt;/del&gt;&lt;/a&gt;. If we decide we need this work for 7.0, we can escalate the PM&apos;s priority.&lt;/p&gt;

&lt;p&gt;Could you let me know which of the other tracks of development are involved (PM tickets)? I&apos;d like to keep the dependency tracking up-to-date in JIRA.&lt;/p&gt;</comment>
                            <comment id="4430148" author="esha.maharishi@10gen.com" created="Wed, 23 Mar 2022 17:12:11 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=steve.la&quot; class=&quot;user-hover&quot; rel=&quot;steve.la&quot;&gt;steve.la&lt;/a&gt;, it may become a long tail right around 7.0 (around May next year), but I don&apos;t know for sure since there are several other tracks of development that need to happen in parallel. It might make sense to mark it as &quot;may be needed around 7.0&quot; and revisit towards the end of this year.&lt;/p&gt;</comment>
                            <comment id="4428383" author="JIRAUSER1260908" created="Tue, 22 Mar 2022 22:28:44 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=esha.maharishi&quot; class=&quot;user-hover&quot; rel=&quot;esha.maharishi&quot;&gt;esha.maharishi&lt;/a&gt; is this needed for 7.0?&lt;/p&gt;</comment>
                            <comment id="4416284" author="esha.maharishi@10gen.com" created="Wed, 16 Mar 2022 17:24:04 +0000"  >&lt;p&gt;Query team, I created this ticket to correspond to the new line item in the Serverless init plan. Please feel free to place it on your backlog; I will add it as a Serverless request for an upcoming quarter.&lt;/p&gt;</comment>
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