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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-44791] Abort index builds by interrupting the OperationContext of the builder thread</title>
                <link>https://jira.mongodb.org/browse/SERVER-44791</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The current mechanism for aborting index builds through the IndexBuildsCoordinator is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/c72849fb005cfcba272eb53b6024d5fd31c3ec9c/src/mongo/db/catalog/multi_index_block.cpp#L872&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;to set a flag on the MultiIndexBlock&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;During the index build process we check if this flag has been set a few times. For example, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/c72849fb005cfcba272eb53b6024d5fd31c3ec9c/src/mongo/db/catalog/multi_index_block.cpp#L619&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;at the begining of each drain phases&lt;/a&gt;, of which there are only 3 calls.&lt;/p&gt;

&lt;p&gt;This makes it difficult and unreliable to abort index builds because the window between aborting an index build and it actually tearing down is potentially very wide for large indexes.&lt;/p&gt;

&lt;p&gt;In part because of the deadlock described by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44722&quot; title=&quot;3 way deadlock can happen between hybrid index build, prepared transactions and stepdown thread on primary that runs index build via coordinator.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44722&quot;&gt;&lt;del&gt;SERVER-44722&lt;/del&gt;&lt;/a&gt;, it would be better to actually interrupt the operation context of the index builder thread. Lock acquisitions or explicit calls to checkForInterrupt() should throw and immediately abort the index build.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1020506">SERVER-44791</key>
            <summary>Abort index builds by interrupting the OperationContext of the builder thread</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="3">Duplicate</resolution>
                                        <assignee username="louis.williams@mongodb.com">Louis Williams</assignee>
                                    <reporter username="louis.williams@mongodb.com">Louis Williams</reporter>
                        <labels>
                    </labels>
                <created>Fri, 22 Nov 2019 17:53:41 +0000</created>
                <updated>Fri, 10 Apr 2020 14:20:29 +0000</updated>
                            <resolved>Fri, 10 Apr 2020 14:20:29 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3034804" author="louis.williams" created="Fri, 10 Apr 2020 14:20:29 +0000"  >&lt;p&gt;This work was completed by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-46560&quot; title=&quot;Make Abort index build logic deterministic.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-46560&quot;&gt;&lt;del&gt;SERVER-46560&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="2923457" author="louis.williams" created="Mon, 2 Mar 2020 19:03:44 +0000"  >&lt;p&gt;I&apos;m not sure this is going to be possible now that &lt;a href=&quot;https://github.com/mongodb/mongo/blob/e29b8e770f26bfd3f9f4529ed139fcd19cfd2b2d/src/mongo/db/index_builds_coordinator.cpp#L1888-L1890&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;index build threads ignore interrupts&lt;/a&gt;.&lt;/p&gt;</comment>
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            <issuekey id="1009935">SERVER-44722</issuekey>
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            <issuekey id="1135193">SERVER-46012</issuekey>
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            <issuekey id="1217885">SERVER-46595</issuekey>
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            <issuekey id="1135193">SERVER-46012</issuekey>
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            <issuekey id="710411">SERVER-39976</issuekey>
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