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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-49155] MultiIndexBlock::init() does not clear _indexes upon a WCE</title>
                <link>https://jira.mongodb.org/browse/SERVER-49155</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;There was a build failure where this &lt;a href=&quot;https://github.com/mongodb/mongo/blob/862243472b2eb68564672ee8e2eb98b534b04a85/src/mongo/db/catalog/multi_index_block.cpp#L186&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;invariant failed&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;This happened because the IndexBuildsManager::setUpIndexBuild() function &lt;a href=&quot;https://github.com/mongodb/mongo/blob/862243472b2eb68564672ee8e2eb98b534b04a85/src/mongo/db/catalog/index_builds_manager.cpp#L110-L112&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;will retry calling&lt;/a&gt; MultiIndexBlock::init() in a write conflict retry loop.&lt;br/&gt;
But because the MultiIndexBlock::init() function does not clean up its state on a WCE, the second attempt will invariant. Adding a onRollback() hook to clear _indexes should do the trick.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1393315">SERVER-49155</key>
            <summary>MultiIndexBlock::init() does not clear _indexes upon a WCE</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="13201">Fixed</resolution>
                                        <assignee username="gregory.wlodarek@mongodb.com">Gregory Wlodarek</assignee>
                                    <reporter username="gregory.wlodarek@mongodb.com">Gregory Wlodarek</reporter>
                        <labels>
                    </labels>
                <created>Fri, 26 Jun 2020 20:44:59 +0000</created>
                <updated>Sun, 29 Oct 2023 22:06:22 +0000</updated>
                            <resolved>Tue, 14 Jul 2020 17:04:28 +0000</resolved>
                                    <version>4.5.1</version>
                    <version>4.4.0-rc11</version>
                                    <fixVersion>4.4.0-rc14</fixVersion>
                    <fixVersion>4.7.0</fixVersion>
                                    <component>Index Maintenance</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="3289104" author="xgen-internal-githook" created="Fri, 17 Jul 2020 05:23:48 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;username&apos;: &apos;GWlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-49155&quot; title=&quot;MultiIndexBlock::init() does not clear _indexes upon a WCE&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49155&quot;&gt;&lt;del&gt;SERVER-49155&lt;/del&gt;&lt;/a&gt; Remove mock objects from MultiIndexBlockTest and test the onRollback() commit handler for MultiIndexBlock::init()&lt;/p&gt;

&lt;p&gt;(cherry picked from commit aaeb549ed1e6804e229c1db09fc60260bfd82a62)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f55c432ba68ef32a430ba3a92cd1f564c0105c20&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f55c432ba68ef32a430ba3a92cd1f564c0105c20&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3289103" author="xgen-internal-githook" created="Fri, 17 Jul 2020 05:23:46 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;username&apos;: &apos;GWlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-49155&quot; title=&quot;MultiIndexBlock::init() does not clear _indexes upon a WCE&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49155&quot;&gt;&lt;del&gt;SERVER-49155&lt;/del&gt;&lt;/a&gt; MultiIndexBlock::init() should clear _indexes on a WriteConflictException&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 5878325f0d8d49fdc7b9a41f5e24617e3f5febf9)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b29c1758d425a73daddda6256d677add47683c59&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b29c1758d425a73daddda6256d677add47683c59&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3284713" author="xgen-internal-githook" created="Tue, 14 Jul 2020 17:04:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;username&apos;: &apos;GWlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-49155&quot; title=&quot;MultiIndexBlock::init() does not clear _indexes upon a WCE&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49155&quot;&gt;&lt;del&gt;SERVER-49155&lt;/del&gt;&lt;/a&gt; Remove mock objects from MultiIndexBlockTest and test the onRollback() commit handler for MultiIndexBlock::init()&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/aaeb549ed1e6804e229c1db09fc60260bfd82a62&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/aaeb549ed1e6804e229c1db09fc60260bfd82a62&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3284712" author="xgen-internal-githook" created="Tue, 14 Jul 2020 17:03:58 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;username&apos;: &apos;GWlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-49155&quot; title=&quot;MultiIndexBlock::init() does not clear _indexes upon a WCE&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49155&quot;&gt;&lt;del&gt;SERVER-49155&lt;/del&gt;&lt;/a&gt; Fix typo in MultiIndexBlock::init()&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5d787e11adfab43295fc7e4b72449cc1bec81594&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5d787e11adfab43295fc7e4b72449cc1bec81594&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3284711" author="xgen-internal-githook" created="Tue, 14 Jul 2020 17:03:55 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;username&apos;: &apos;GWlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-49155&quot; title=&quot;MultiIndexBlock::init() does not clear _indexes upon a WCE&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49155&quot;&gt;&lt;del&gt;SERVER-49155&lt;/del&gt;&lt;/a&gt; MultiIndexBlock::init() should clear _indexes on a WriteConflictException&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5878325f0d8d49fdc7b9a41f5e24617e3f5febf9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5878325f0d8d49fdc7b9a41f5e24617e3f5febf9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3226456" author="gregory.wlodarek" created="Fri, 26 Jun 2020 20:50:30 +0000"  >&lt;p&gt;It looks like v4.2 is not affected, as the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/21184efa95bdb654726b9ad516621965d2581976/src/mongo/db/catalog/multi_index_block.cpp#L307&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;onRollback() hook&lt;/a&gt; cleared _indexes.&lt;/p&gt;</comment>
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            <issuekey id="1865814">SERVER-59738</issuekey>
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