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    <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-25765] Commands should wait for write concern even if they throw an exception</title>
                <link>https://jira.mongodb.org/browse/SERVER-25765</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Discovered while working on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25001&quot; title=&quot;Wire new _configsvrSplitChunk command into Shard-&amp;gt;ConfigServer pathway&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25001&quot;&gt;&lt;del&gt;SERVER-25001&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Even when a command fails or results in a no-op, if that failure was due to the state of the data files at that moment, and the command came with a w:majority write concern, we need to wait for the most recent optime to become committed, so that the data that caused the command to error will be visible on a subsequent majority read.  We &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a213f8aaf6b47054e7c204e3507b9ae2dc59ba46/src/mongo/db/commands/dbcommands.cpp#L1509&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;already do this&lt;/a&gt; properly when a command returns a failure by returning false, but if the command throws an exception we don&apos;t.  This can lead to subtle problems with the maintenance of the config server optime, as well as leading to confusing behavior for users using readConcern:majority reads&lt;/p&gt;</description>
                <environment></environment>
        <key id="311342">SERVER-25765</key>
            <summary>Commands should wait for write concern even if they throw an exception</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="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="9">Done</resolution>
                                        <assignee username="spencer@mongodb.com">Spencer Brody</assignee>
                                    <reporter username="spencer@mongodb.com">Spencer Brody</reporter>
                        <labels>
                            <label>writeconcern</label>
                    </labels>
                <created>Tue, 23 Aug 2016 21:09:42 +0000</created>
                <updated>Tue, 11 Jan 2022 17:14:12 +0000</updated>
                            <resolved>Thu, 20 Apr 2017 20:09:44 +0000</resolved>
                                                    <fixVersion>3.4.6</fixVersion>
                    <fixVersion>3.5.7</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1599480" author="xgen-internal-githook" created="Fri, 16 Jun 2017 17:52:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;stbrody&apos;, u&apos;name&apos;: u&apos;Spencer T Brody&apos;, u&apos;email&apos;: u&apos;spencer@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25765&quot; title=&quot;Commands should wait for write concern even if they throw an exception&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25765&quot;&gt;&lt;del&gt;SERVER-25765&lt;/del&gt;&lt;/a&gt; Commands should wait for write concern even if they throw an exception&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 5bdd2f49c02e5fe2812ccc6f21502799fa5a3268)&lt;br/&gt;
Branch: v3.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/471020b727192e4067a27bcae29db21a59901568&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/471020b727192e4067a27bcae29db21a59901568&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1554070" author="xgen-internal-githook" created="Thu, 20 Apr 2017 20:09:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;stbrody&apos;, u&apos;name&apos;: u&apos;Spencer T Brody&apos;, u&apos;email&apos;: u&apos;spencer@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25765&quot; title=&quot;Commands should wait for write concern even if they throw an exception&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25765&quot;&gt;&lt;del&gt;SERVER-25765&lt;/del&gt;&lt;/a&gt; Commands should wait for write concern even if they throw an exception&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5bdd2f49c02e5fe2812ccc6f21502799fa5a3268&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5bdd2f49c02e5fe2812ccc6f21502799fa5a3268&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1365708" author="spencer" created="Tue, 23 Aug 2016 21:18:37 +0000"  >&lt;p&gt;I think this should be as straightforward as moving the waiting for write concern code to be in an ON_BLOCK_EXIT set up right before running the command.&lt;/p&gt;</comment>
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            <issuekey id="332329">SERVER-27067</issuekey>
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            <issuekey id="534182">SERVER-34679</issuekey>
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