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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <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-25468] Using DBDirectClient trips invariant failure about lock state in ReplicationCoordinatorImpl::waitUntilOpTimeForRead()</title>
                <link>https://jira.mongodb.org/browse/SERVER-25468</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The &lt;a href=&quot;https://github.com/mongodb/mongo/commit/7c67f3a6fd52ea4933c23ce89f1cc5da62628ec4#diff-0309ac14fcb79e4e7df819103ab23254R1064&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;invariant(!txn-&amp;gt;lockState()-&amp;gt;isLocked())&lt;/tt&gt;&lt;/a&gt; was introduced as part of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24858&quot; title=&quot;Tighten assertions around waiting for write concern&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24858&quot;&gt;&lt;del&gt;SERVER-24858&lt;/del&gt;&lt;/a&gt;. This issue &lt;b&gt;does not&lt;/b&gt; affect the 3.2 branch.&lt;/p&gt;</description>
                <environment></environment>
        <key id="307091">SERVER-25468</key>
            <summary>Using DBDirectClient trips invariant failure about lock state in ReplicationCoordinatorImpl::waitUntilOpTimeForRead()</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="kaloian.manassiev@mongodb.com">Kaloian Manassiev</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                    </labels>
                <created>Sun, 7 Aug 2016 01:24:50 +0000</created>
                <updated>Tue, 11 Apr 2017 22:39:10 +0000</updated>
                            <resolved>Sat, 13 Aug 2016 14:42:11 +0000</resolved>
                                    <version>3.3.10</version>
                                    <fixVersion>3.3.12</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="1356202" author="xgen-internal-githook" created="Sat, 13 Aug 2016 14:39:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kaloianm&apos;, u&apos;name&apos;: u&apos;Kaloian Manassiev&apos;, u&apos;email&apos;: u&apos;kaloian.manassiev@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25468&quot; title=&quot;Using DBDirectClient trips invariant failure about lock state in ReplicationCoordinatorImpl::waitUntilOpTimeForRead()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25468&quot;&gt;&lt;del&gt;SERVER-25468&lt;/del&gt;&lt;/a&gt; Fail commands scheduled through &apos;eval&apos; which wait for replication&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f210923e76fa101ca417a085dd370219221cdda0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f210923e76fa101ca417a085dd370219221cdda0&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1350115" author="kaloian.manassiev" created="Mon, 8 Aug 2016 14:37:41 +0000"  >&lt;p&gt;This is an actual bug because waiting for read concern is attempted while holding the global X lock. This will deadlock, because while the lock is held the replication subsystem will not be able to advance the optime.&lt;/p&gt;

&lt;p&gt;We can make the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/read_concern.cpp#L77&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;waitForReadConcern&lt;/tt&gt;&lt;/a&gt; method uassert if it is called with any lock. This ticket should be on the replication team, so I will move it out of platform.&lt;/p&gt;</comment>
                            <comment id="1349608" author="max.hirschhorn@10gen.com" created="Sun, 7 Aug 2016 21:28:29 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=acm&quot; class=&quot;user-hover&quot; rel=&quot;acm&quot;&gt;acm&lt;/a&gt;, it&apos;s a bit tenuous, but I assigned this ticket to the platforms team based on the particular manifestation of the invariant failure. I also CC&apos;d Kal because it appears this invariant is too stringent and perhaps he can comment on what his expectations were for callers from &lt;tt&gt;DBDirectClient&lt;/tt&gt;. It isn&apos;t clear to me what the semantics of waiting for a read concern when using &lt;tt&gt;DBDirectClient&lt;/tt&gt; should be. My understanding is that we wait once at the start of running a command, so it&apos;s kind of peculiar to end up waiting multiple times. Since you have more experience with things that are &quot;internal client&quot;-related, I figured that you might have some thoughts on this.&lt;/p&gt;</comment>
                            <comment id="1349597" author="acm" created="Sun, 7 Aug 2016 20:29:35 +0000"  >&lt;p&gt;Max, can you add a little context for why this belongs on the platforms backlog? It isn&apos;t immediately obvious to me.&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="373172">SERVER-28746</issuekey>
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            <issuekey id="297859">SERVER-24858</issuekey>
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