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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-30414] Many callers of PlanExecutor::restoreState() ignore the return value</title>
                <link>https://jira.mongodb.org/browse/SERVER-30414</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.5.10/src/mongo/db/query/plan_executor.h#L283&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;PlanExecutor::restoreState()&lt;/tt&gt;&lt;/a&gt; returns a boolean indicating whether it&apos;s safe to use. If a WriteConflictException is encountered while restoring, we may need to yield to recover. If this is the case, some event like a collection drop could invalidate the PlanExecutor. It seems like maybe it&apos;s safe to continue after this happens, since most callers immediately call PlanExecutor::getNext afterwards, which checks if it was killed and will return PlanExecutor::DEAD immediately.&lt;/p&gt;

&lt;p&gt;We should either make all callers handle the return value, or change it to return void if it&apos;s safe. It seems better to handle it - since calling restoreState() might leave you in a state where you have no locks.&lt;/p&gt;</description>
                <environment></environment>
        <key id="409786">SERVER-30414</key>
            <summary>Many callers of PlanExecutor::restoreState() ignore the return value</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="charlie.swanson@mongodb.com">Charlie Swanson</assignee>
                                    <reporter username="charlie.swanson@mongodb.com">Charlie Swanson</reporter>
                        <labels>
                    </labels>
                <created>Fri, 28 Jul 2017 20:01:35 +0000</created>
                <updated>Fri, 12 Jan 2018 16:51:55 +0000</updated>
                            <resolved>Thu, 11 Jan 2018 17:56:00 +0000</resolved>
                                                                    <component>Aggregation Framework</component>
                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1771794" author="charlie.swanson" created="Thu, 11 Jan 2018 17:56:00 +0000"  >&lt;p&gt;Indeed this was resolved by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30410&quot; title=&quot;Make sure PlanExecutor is saved when leaving DocumentSourceCursor::loadBatch()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30410&quot;&gt;&lt;del&gt;SERVER-30410&lt;/del&gt;&lt;/a&gt;. As part of that work, we changed the method to return a Status, which causes a compile error if it is ignored. Resolving this ticket as a duplicate.&lt;/p&gt;</comment>
                            <comment id="1639864" author="charlie.swanson" created="Thu, 3 Aug 2017 15:50:07 +0000"  >&lt;p&gt;Pulling this into the current sprint since I think it will be resolved by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30410&quot; title=&quot;Make sure PlanExecutor is saved when leaving DocumentSourceCursor::loadBatch()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30410&quot;&gt;&lt;del&gt;SERVER-30410&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
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