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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-16194] Lock manager should expose methods that separate enqueuing a lock request and waiting for it to be satisfied</title>
                <link>https://jira.mongodb.org/browse/SERVER-16194</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;To resolve &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15310&quot; title=&quot;kill all operations before attempting stepdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15310&quot;&gt;&lt;del&gt;SERVER-15310&lt;/del&gt;&lt;/a&gt; in a race-free manner, it is necessary to enqueue a request for the global shared lock, then kill all outstanding operations, then wait for the lock request to be satisfied.  This order is needed to prevent a race between killing outstanding operations and acquiring the global shared lock, during which a new operation might sneak in.&lt;/p&gt;</description>
                <environment></environment>
        <key id="169688">SERVER-16194</key>
            <summary>Lock manager should expose methods that separate enqueuing a lock request and waiting for it to be satisfied</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="schwerin@mongodb.com">Andy Schwerin</reporter>
                        <labels>
                    </labels>
                <created>Mon, 17 Nov 2014 16:42:11 +0000</created>
                <updated>Mon, 11 Jul 2016 17:17:28 +0000</updated>
                            <resolved>Wed, 19 Nov 2014 20:31:28 +0000</resolved>
                                                    <fixVersion>2.8.0-rc1</fixVersion>
                                    <component>Concurrency</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="825201" author="xgen-internal-githook" created="Mon, 9 Feb 2015 20:53:20 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;GeertBosch&apos;, u&apos;name&apos;: u&apos;Geert Bosch&apos;, u&apos;email&apos;: u&apos;geert@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-16194&quot; title=&quot;Lock manager should expose methods that separate enqueuing a lock request and waiting for it to be satisfied&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16194&quot;&gt;&lt;del&gt;SERVER-16194&lt;/del&gt;&lt;/a&gt;: Make expensive invariant into a dassert&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ead3b9df094468ed85d1e93015328cee6ec11850&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ead3b9df094468ed85d1e93015328cee6ec11850&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="768340" author="xgen-internal-githook" created="Wed, 19 Nov 2014 20:30:24 +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-16194&quot; title=&quot;Lock manager should expose methods that separate enqueuing a lock request and waiting for it to be satisfied&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16194&quot;&gt;&lt;del&gt;SERVER-16194&lt;/del&gt;&lt;/a&gt; Add a lockGlobalBegin capability for the global lock&lt;/p&gt;

&lt;p&gt;This allows replication step down to queue itself for acquiring the global&lt;br/&gt;
lock and then go and kill all owners and wait afterwards.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2304904687c5d29e228d86da95244682dc62caa1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2304904687c5d29e228d86da95244682dc62caa1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="767431" author="xgen-internal-githook" created="Tue, 18 Nov 2014 22:46:38 +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-16194&quot; title=&quot;Lock manager should expose methods that separate enqueuing a lock request and waiting for it to be satisfied&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16194&quot;&gt;&lt;del&gt;SERVER-16194&lt;/del&gt;&lt;/a&gt; Add a lockBegin/Complete capability to the Locker&lt;/p&gt;

&lt;p&gt;This allows lock requests to be posted on the Locker so that it puts the&lt;br/&gt;
requestor in line, allowing it to do other things and then wait for the&lt;br/&gt;
actual grant to happen.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2bf87c388c8c2d2956cd8e1b81cdd84ca285fa50&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2bf87c388c8c2d2956cd8e1b81cdd84ca285fa50&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="767430" author="xgen-internal-githook" created="Tue, 18 Nov 2014 22:46:37 +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-16194&quot; title=&quot;Lock manager should expose methods that separate enqueuing a lock request and waiting for it to be satisfied&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16194&quot;&gt;&lt;del&gt;SERVER-16194&lt;/del&gt;&lt;/a&gt; Use MMAP V1 locker for the perf testing benchmark&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d6427045827b5ae5dc1fea9917cba3c1dcf0d341&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d6427045827b5ae5dc1fea9917cba3c1dcf0d341&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="158979">SERVER-15310</issuekey>
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