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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-44126] Make AsyncResultsMerger only swallow retriable errors</title>
                <link>https://jira.mongodb.org/browse/SERVER-44126</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When allowPartialResults is true, establishCursors (i.e. the find command) only swallows&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/0d740a44335d3835ad0e947115c6fc8cf5e2122f/src/mongo/s/query/establish_cursors.cpp#L98-L113&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;RetriableError and&#160;FailedToSatisfyReadPreference errors&lt;/a&gt;. However, it looks like AsyncResultsMerger (i.e. the getMore command) swallows &lt;a href=&quot;https://github.com/mongodb/mongo/blob/0d740a44335d3835ad0e947115c6fc8cf5e2122f/src/mongo/s/query/async_results_merger.cpp#L579&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;all kinds of errors&lt;/a&gt;. It should be changed to swallow only retriable errors.&lt;/p&gt;</description>
                <environment></environment>
        <key id="974213">SERVER-44126</key>
            <summary>Make AsyncResultsMerger only swallow retriable errors</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="bernard.gorman@mongodb.com">Bernard Gorman</assignee>
                                    <reporter username="cheahuychou.mao@mongodb.com">Cheahuychou Mao</reporter>
                        <labels>
                    </labels>
                <created>Mon, 21 Oct 2019 14:17:41 +0000</created>
                <updated>Wed, 6 Nov 2019 02:44:04 +0000</updated>
                            <resolved>Wed, 6 Nov 2019 02:43:26 +0000</resolved>
                                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2519297" author="bernard.gorman" created="Wed, 6 Nov 2019 02:43:12 +0000"  >&lt;p&gt;I don&apos;t think this change makes sense. The reason we only swallow retriable errors (or &lt;tt&gt;FailedToSatisfyReadPreference&lt;/tt&gt;) in &lt;tt&gt;establishCursors&lt;/tt&gt; is that they indicate a transient failure; we automatically retry on seeing these exceptions, and only surface them in &lt;tt&gt;establishCursors&lt;/tt&gt; when we have exhausted our maximum retry attempts. These are exceptions like &lt;tt&gt;HostUnreachable&lt;/tt&gt;, &lt;tt&gt;NetworkTimeout&lt;/tt&gt; etc that are mostly only relevant when attempting to establish an initial connection. But since we aren&apos;t going to try to re-establish a connection that&apos;s dropped by the ARM, limiting &lt;tt&gt;allowPartialResults&apos;&lt;/tt&gt; tolerance to only retriable errors doesn&apos;t make sense here. We should continue to observe &lt;tt&gt;allowPartialResults&lt;/tt&gt; regardless of what caused us to disconnect.&lt;/p&gt;</comment>
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                                                                <inwardlinks description="is related to">
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            <issuekey id="375687">SERVER-28874</issuekey>
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