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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-31232] remove retrying on stale shardVersion errors from cluster_aggregate.cpp</title>
                <link>https://jira.mongodb.org/browse/SERVER-31232</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30025&quot; title=&quot;for sharded read with empty query, target only shards that own data for the collection instead of all shards&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30025&quot;&gt;&lt;del&gt;SERVER-30025&lt;/del&gt;&lt;/a&gt; will make the scatterGather*() methods throw a StaleConfigException on seeing a stale shardVersion error in a response from a shard.&lt;/p&gt;

&lt;p&gt;This StaleConfigException is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.5.13/src/mongo/s/commands/strategy.cpp#L274-L296&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;caught at the top of mongos in generic command processing&lt;/a&gt;, and the command gets retried from the beginning.&lt;/p&gt;

&lt;p&gt;So, a command need not intercept stale shardVersion errors and perform any complicated retry logic itself.&lt;/p&gt;

&lt;p&gt;This will fix a bug in aggregation, where if a sharded collection is dropped and recreated as a view, the view definition response was not handled by &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.5.13/src/mongo/s/commands/cluster_aggregate.cpp#L483-L553&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the aggregation code on mongos&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="431172">SERVER-31232</key>
            <summary>remove retrying on stale shardVersion errors from cluster_aggregate.cpp</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">[DO NOT USE] Backlog - Sharding Team</assignee>
                                    <reporter username="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                    </labels>
                <created>Fri, 22 Sep 2017 22:03:46 +0000</created>
                <updated>Tue, 6 Dec 2022 03:51:21 +0000</updated>
                            <resolved>Wed, 3 Oct 2018 17:39:23 +0000</resolved>
                                    <version>3.5.13</version>
                                                    <component>Aggregation Framework</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="2022524" author="esha.maharishi@10gen.com" created="Wed, 3 Oct 2018 17:39:23 +0000"  >&lt;p&gt;Great, closing as a dupe &lt;img class=&quot;emoticon&quot; src=&quot;https://jira.mongodb.org/images/icons/emoticons/smile.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;</comment>
                            <comment id="2022519" author="nicholas.zolnierz" created="Wed, 3 Oct 2018 17:37:05 +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; yep this was done as part of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34695&quot; title=&quot;Move aggregation retry logic to command processing layer&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34695&quot;&gt;&lt;del&gt;SERVER-34695&lt;/del&gt;&lt;/a&gt;, I don&apos;t believe there are any lingering spots where we handle stale version exceptions in the agg layer. Sorry didn&apos;t realize this ticket existed at the time of creating &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34695&quot; title=&quot;Move aggregation retry logic to command processing layer&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34695&quot;&gt;&lt;del&gt;SERVER-34695&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="2022511" author="esha.maharishi@10gen.com" created="Wed, 3 Oct 2018 17:33:09 +0000"  >&lt;p&gt;Maybe &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=nicholas.zolnierz&quot; class=&quot;user-hover&quot; rel=&quot;nicholas.zolnierz&quot;&gt;nicholas.zolnierz&lt;/a&gt; or &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=charlie.swanson&quot; class=&quot;user-hover&quot; rel=&quot;charlie.swanson&quot;&gt;charlie.swanson&lt;/a&gt; can confirm - I agree at least some of the stale version exceptions are now bubbled up to the top-level retry loop, but I&apos;m not sure if there are any branches in agg that still catch them.&lt;/p&gt;</comment>
                            <comment id="2022495" author="david.storch" created="Wed, 3 Oct 2018 17:21:18 +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;, if I&apos;m not mistaken, this work has been completed under a different ticket.&lt;/p&gt;</comment>
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            <issuekey id="401216">SERVER-30025</issuekey>
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