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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-64215] Interrupt OplogBufferMock::waitForData on shutdown</title>
                <link>https://jira.mongodb.org/browse/SERVER-64215</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/repl/tenant_oplog_applier_test.cpp&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;tenant_oplog_applier_test&lt;/a&gt; takes ~36 seconds to run. This slowness is due to the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/078acc6b8f55faa58ad794021b40ee47a528c035/src/mongo/db/repl/tenant_oplog_applier_test.cpp#L385-L386&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;shutdown &amp;amp; join of the TenantOplogApplier that is done at the end of every test case&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;In particular as part of the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/078acc6b8f55faa58ad794021b40ee47a528c035/src/mongo/db/repl/tenant_oplog_applier.cpp#L150-L162&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;shutdown of the TenantOplogApplier &lt;/a&gt; we shutdown also the underlying &lt;tt&gt;_oplogBatcher&lt;/tt&gt;.&lt;/p&gt;

&lt;p&gt;The problem is that when we shutdown the TenantOplogBatcher, the batcher won&apos;t actually move to the kComplete state &lt;a href=&quot;https://github.com/mongodb/mongo/blob/078acc6b8f55faa58ad794021b40ee47a528c035/src/mongo/db/repl/tenant_oplog_batcher.cpp#L158-L164&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;until the last call to _oplogBuffer-&amp;gt;waitForData(Seconds(1)) complete&lt;/a&gt;.&lt;br/&gt;
 So practically every time a test case end it will block 1 seconds waiting to join the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/078acc6b8f55faa58ad794021b40ee47a528c035/src/mongo/db/repl/tenant_oplog_applier.cpp#L150-L162&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;TenantOplogApplier.&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;In order to reduce this delay we should shutdown the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/078acc6b8f55faa58ad794021b40ee47a528c035/src/mongo/db/repl/tenant_oplog_applier_test.cpp#L185&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;oplogBuffer&lt;/a&gt; before to join the TenantOplogApplier that is using it and make that this shoutdown interrupts also the waiForData function.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;With the proposed changes the test run time drop from ~36 seconds to ~2 seconds.&lt;/b&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1994791">SERVER-64215</key>
            <summary>Interrupt OplogBufferMock::waitForData on shutdown</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="13201">Fixed</resolution>
                                        <assignee username="tommaso.tocci@mongodb.com">Tommaso Tocci</assignee>
                                    <reporter username="tommaso.tocci@mongodb.com">Tommaso Tocci</reporter>
                        <labels>
                            <label>testing</label>
                    </labels>
                <created>Fri, 4 Mar 2022 16:48:39 +0000</created>
                <updated>Sun, 29 Oct 2023 21:41:36 +0000</updated>
                            <resolved>Sat, 5 Mar 2022 19:18:25 +0000</resolved>
                                                    <fixVersion>6.0.0-rc0</fixVersion>
                    <fixVersion>5.0.10</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4632516" author="xgen-internal-githook" created="Wed, 22 Jun 2022 15:24:36 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Tommaso Tocci&apos;, &apos;email&apos;: &apos;tommaso.tocci@mongodb.com&apos;, &apos;username&apos;: &apos;toto-dev&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64215&quot; title=&quot;Interrupt OplogBufferMock::waitForData on shutdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64215&quot;&gt;&lt;del&gt;SERVER-64215&lt;/del&gt;&lt;/a&gt; Interrupt OplogBufferMock::waitForData on shutdown&lt;/p&gt;

&lt;p&gt;(cherry picked from commit a66c6e95cda3a4bdb8a3ab2e5f253c4635a6dd5b)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4ea21c1a749099fca07cad1fa5d76c0acaa4b030&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4ea21c1a749099fca07cad1fa5d76c0acaa4b030&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4614450" author="matthew.russotto" created="Tue, 14 Jun 2022 14:24:52 +0000"  >&lt;p&gt;The oplog buffer changes (allowing shutdown to interrupt oplog buffer wais) were backported to make &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65723&quot; title=&quot;Add tunable parameter to improve batching on secondaries&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65723&quot;&gt;&lt;del&gt;SERVER-65723&lt;/del&gt;&lt;/a&gt; backport cleanly.&lt;/p&gt;</comment>
                            <comment id="4392406" author="xgen-internal-githook" created="Fri, 4 Mar 2022 19:59:24 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Tommaso Tocci&apos;, &apos;email&apos;: &apos;tommaso.tocci@mongodb.com&apos;, &apos;username&apos;: &apos;toto-dev&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64215&quot; title=&quot;Interrupt OplogBufferMock::waitForData on shutdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64215&quot;&gt;&lt;del&gt;SERVER-64215&lt;/del&gt;&lt;/a&gt; Interrupt OplogBufferMock::waitForData on shutdown&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a66c6e95cda3a4bdb8a3ab2e5f253c4635a6dd5b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a66c6e95cda3a4bdb8a3ab2e5f253c4635a6dd5b&lt;/a&gt;&lt;/p&gt;</comment>
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