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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-36961] createIndexes command should check if index already exists with weak lock</title>
                <link>https://jira.mongodb.org/browse/SERVER-36961</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently createIndexes command takes the locks it needs to actual create an index.&#160; If the index already exists (as is the case in a lot of scenarios where &quot;just in case&quot; createIndex is sent periodically or before running some process) concurrency could benefit significantly from checking if the index already exists under a weak lock.&lt;/p&gt;

&lt;p&gt;This would benefit cases where the index exists as is (success returned) or the index exists but with different options (failure returned) - neither of these would contribute to command requiring a strong lock.&lt;/p&gt;</description>
                <environment></environment>
        <key id="598164">SERVER-36961</key>
            <summary>createIndexes command should check if index already exists with weak lock</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="2" iconUrl="https://jira.mongodb.org/images/icons/priorities/critical.svg">Critical - P2</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="louis.williams@mongodb.com">Louis Williams</assignee>
                                    <reporter username="asya.kamsky@mongodb.com">Asya Kamsky</reporter>
                        <labels>
                    </labels>
                <created>Fri, 31 Aug 2018 17:10:10 +0000</created>
                <updated>Sun, 29 Oct 2023 22:28:30 +0000</updated>
                            <resolved>Tue, 18 Sep 2018 15:11:05 +0000</resolved>
                                                    <fixVersion>3.6.9</fixVersion>
                    <fixVersion>4.0.3</fixVersion>
                    <fixVersion>4.1.4</fixVersion>
                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>14</watches>
                                                                                                                <comments>
                            <comment id="2029465" author="xgen-internal-githook" created="Wed, 10 Oct 2018 20:08:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Louis Williams&apos;, &apos;email&apos;: &apos;louis.williams@mongodb.com&apos;, &apos;username&apos;: &apos;louiswilliams&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36961&quot; title=&quot;createIndexes command should check if index already exists with weak lock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36961&quot;&gt;&lt;del&gt;SERVER-36961&lt;/del&gt;&lt;/a&gt; createIndexes command should check if indexes already exist with weak lock&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 44c1dcf0e962bda6c37c02c9e8bebcc4fa6e447e)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f6aab22aec3bd04f0a28cfa2dfb55c6911321a99&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f6aab22aec3bd04f0a28cfa2dfb55c6911321a99&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2027590" author="milkie" created="Tue, 9 Oct 2018 12:12:50 +0000"  >&lt;p&gt;It looks like the backport will be clean so I&apos;ll approve it.&lt;/p&gt;</comment>
                            <comment id="2025275" author="blake.oler" created="Fri, 5 Oct 2018 17:08:56 +0000"  >&lt;p&gt;Requesting a 3.6 backport via JIRA. This should be treated with the same priority as the original ticket so that the LogicalSessionCache can be stabilized on 3.6. CC &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=milkie&quot; class=&quot;user-hover&quot; rel=&quot;milkie&quot;&gt;milkie&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2023052" author="blake.oler" created="Wed, 3 Oct 2018 23:31:52 +0000"  >&lt;p&gt;It&apos;d be great if we could backport this to 3.6. That would help us prevent lock timeout issues in the LogicalSessionCache. Is this possible &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=louis.williams&quot; class=&quot;user-hover&quot; rel=&quot;louis.williams&quot;&gt;louis.williams&lt;/a&gt;?&lt;/p&gt;</comment>
                            <comment id="2010573" author="xgen-internal-githook" created="Fri, 21 Sep 2018 16:28:48 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Louis Williams&apos;, &apos;email&apos;: &apos;louis.williams@mongodb.com&apos;, &apos;username&apos;: &apos;louiswilliams&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36961&quot; title=&quot;createIndexes command should check if index already exists with weak lock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36961&quot;&gt;&lt;del&gt;SERVER-36961&lt;/del&gt;&lt;/a&gt; createIndexes command should check if indexes already exist with weak lock&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 44c1dcf0e962bda6c37c02c9e8bebcc4fa6e447e)&lt;br/&gt;
Branch: v4.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/135950154d1d319217cd544ea3e3f067213f9645&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/135950154d1d319217cd544ea3e3f067213f9645&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2006543" author="xgen-internal-githook" created="Tue, 18 Sep 2018 15:09:42 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Louis Williams&apos;, &apos;email&apos;: &apos;louis.williams@mongodb.com&apos;, &apos;username&apos;: &apos;louiswilliams&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36961&quot; title=&quot;createIndexes command should check if index already exists with weak lock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36961&quot;&gt;&lt;del&gt;SERVER-36961&lt;/del&gt;&lt;/a&gt; createIndexes command should check if indexes already exist with weak lock&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/44c1dcf0e962bda6c37c02c9e8bebcc4fa6e447e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/44c1dcf0e962bda6c37c02c9e8bebcc4fa6e447e&lt;/a&gt;&lt;/p&gt;</comment>
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                                        <issuelink>
            <issuekey id="597268">SERVER-36921</issuekey>
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            <issuekey id="1301720">SERVER-47268</issuekey>
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            <issuekey id="597929">SERVER-36954</issuekey>
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