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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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            <title>[SERVER-79888] find/getMore timeouts triggered by Fetcher always reported as NetworkInterfaceExceededTimeLimit</title>
                <link>https://jira.mongodb.org/browse/SERVER-79888</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The constructor of Fetcher accepts two timeout values: findNetworkTimeout and getMoreNetworkTimeout. Despite their names, these timeouts govern the entire find/getMore command invocations, not just the network portions. In at least a few cases, these timeouts are derived from a maxTimeMS value, but because they are passed to the Fetcher on their own and not attached to an opCtx, they lose their identities as maxTimeMS values. As a result, if either timeout is hit during the fetching process, a NetworkInterfaceExceededTimeLimit error will be returned (the default defined on RemoteCommandRequest) rather than a MaxTimeMSExpired error, as expected. A potential negative side effect of this would be a process&apos; replica set monitor marking the host as unreachable, when in reality a fetching query just took longer than expected.&lt;/p&gt;

&lt;p&gt;An example of this issue can be seen in ShardRemote::_runExhaustiveCursorCommand, which manually extracts the remaining maxTimeMS value from the opCtx and then passes it into a Fetcher.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/s/client/shard_remote.cpp#L303-L310&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/r7.0.0/src/mongo/s/client/shard_remote.cpp#L303-L310&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/client/fetcher.cpp#L200-L201&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/r7.0.0/src/mongo/client/fetcher.cpp#L200-L201&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2413471">SERVER-79888</key>
            <summary>find/getMore timeouts triggered by Fetcher always reported as NetworkInterfaceExceededTimeLimit</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="3" iconUrl="https://jira.mongodb.org/images/icons/statuses/inprogress.png" description="This issue is being actively worked on at the moment by the assignee.">In Progress</status>
                    <statusCategory id="4" key="indeterminate" colorName="inprogress"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="janna.golden@mongodb.com">Janna Golden</assignee>
                                    <reporter username="patrick.freed@mongodb.com">Patrick Freed</reporter>
                        <labels>
                            <label>sharding-nyc-subteam2</label>
                    </labels>
                <created>Wed, 9 Aug 2023 19:41:45 +0000</created>
                <updated>Mon, 5 Feb 2024 17:32:58 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>3</watches>
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            <issuekey id="2459683">SERVER-81877</issuekey>
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