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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-49076] Add rollback fuzzer suites to resumable index build variant</title>
                <link>https://jira.mongodb.org/browse/SERVER-49076</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48476&quot; title=&quot;resumable index build should use majority read cursor for collection scan&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48476&quot;&gt;&lt;del&gt;SERVER-48476&lt;/del&gt;&lt;/a&gt; is adding a wait during index builds that can cause a hang in some tests that use the rollback test fixture (which include the rollback fuzzer) when resumable index builds are enabled. As a part of this ticket, we should resolve these hangs.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1389497">SERVER-49076</key>
            <summary>Add rollback fuzzer suites to resumable index build variant</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="gregory.noma@mongodb.com">Gregory Noma</assignee>
                                    <reporter username="samy.lanka@mongodb.com">Samyukta Lanka</reporter>
                        <labels>
                    </labels>
                <created>Wed, 24 Jun 2020 20:51:31 +0000</created>
                <updated>Sun, 29 Oct 2023 22:06:33 +0000</updated>
                            <resolved>Tue, 25 Aug 2020 15:53:50 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                                    <component>Index Maintenance</component>
                    <component>Testing Infrastructure</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3358058" author="xgen-internal-githook" created="Tue, 25 Aug 2020 15:52:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Noma&apos;, &apos;email&apos;: &apos;gregory.noma@gmail.com&apos;, &apos;username&apos;: &apos;gregorynoma&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-49076&quot; title=&quot;Add rollback fuzzer suites to resumable index build variant&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49076&quot;&gt;&lt;del&gt;SERVER-49076&lt;/del&gt;&lt;/a&gt; Add rollback fuzzer suites to resumable index builds variant&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c8b7857db7d31c5b80dba7dd012223a108a95cfd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c8b7857db7d31c5b80dba7dd012223a108a95cfd&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3349966" author="benety.goh" created="Thu, 20 Aug 2020 21:18:49 +0000"  >&lt;p&gt;This ticket may not be feasible for the same reasons that resulting in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45001&quot; title=&quot;enable commit quorum for two phase index builds by default&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45001&quot;&gt;&lt;del&gt;SERVER-45001&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://github.com/mongodb/mongo/commit/cde28e2ab957bd4a27ef240dfbfeea3cc8a70b74#diff-71ccc9b828b2d68dab47c8be07ab6f96R4854&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;configuring the rollback fuzzers to opt out of the commit quorum&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;There is work on the backlog in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-50108&quot; title=&quot;remove enableIndexBuildCommitQuorum server parameter&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-50108&quot;&gt;SERVER-50108&lt;/a&gt; to remove the opt-out flag for commit quorum.&lt;/p&gt;</comment>
                            <comment id="3223003" author="samy.lanka" created="Wed, 24 Jun 2020 22:29:44 +0000"  >&lt;p&gt;One cause of hangs in the rollback test fixture happens when replication is stopped on the tiebreaker node and the rollback node has completed rollback. The test fixture waits for the rollback node to catch up to the primary &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ba18ad9536295e1f8ff9a4e90701f271e38e6b19/jstests/replsets/libs/rollback_test.js#L360&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;. However, the rollback node is stuck while applying a &lt;tt&gt;commitIndexBuild&lt;/tt&gt; oplog entry because the wait added by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48476&quot; title=&quot;resumable index build should use majority read cursor for collection scan&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48476&quot;&gt;&lt;del&gt;SERVER-48476&lt;/del&gt;&lt;/a&gt; during &lt;tt&gt;startIndexBuild&lt;/tt&gt; has not completed (because the majority commit point cannot advance until the tiebreaker node &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ba18ad9536295e1f8ff9a4e90701f271e38e6b19/jstests/replsets/libs/rollback_test.js#L368-L371&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;reconnects to the primary and replication is restarted&lt;/a&gt;). See &lt;a href=&quot;https://logkeeper.mongodb.org/lobster/build/e0c8f411abac700fce056b7d39d644cb/test/5ef27a8b54f2482a8c74f47d#bookmarks=0%2C323%2C346%2C718%2C1151%2C2323%2C2405%2C2728%2C2865%2C3267%2C3362%2C8585%2C8719%2C8726%2C8727%2C8732%2C8734%2C8761%2C8790%2C1085731&amp;amp;l=1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;these logs&lt;/a&gt; for more details.&lt;/p&gt;</comment>
                    </comments>
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                                            <outwardlinks description="depends on">
                                        <issuelink>
            <issuekey id="1448741">SERVER-50446</issuekey>
        </issuelink>
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            <issuekey id="1040340">SERVER-45001</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1365795">SERVER-48476</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1416035">SERVER-49774</issuekey>
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            <issuelink>
            <issuekey id="1429868">SERVER-50108</issuekey>
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