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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-54714] Concurrency workloads for queries on time-series collections</title>
                <link>https://jira.mongodb.org/browse/SERVER-54714</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Create concurrency workloads for time-series collections that exercise the following interesting behaviors:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Queries that use bounded collection scans (i.e. no indexes are available and query by time)&lt;/li&gt;
	&lt;li&gt;Queries that use both metadata and time indexes&lt;/li&gt;
	&lt;li&gt;Index create/drop for metadata indexes and time indexes&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="1630050">SERVER-54714</key>
            <summary>Concurrency workloads for queries on time-series collections</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="dianna.hohensee@mongodb.com">Dianna Hohensee</assignee>
                                    <reporter username="louis.williams@mongodb.com">Louis Williams</reporter>
                        <labels>
                    </labels>
                <created>Mon, 22 Feb 2021 20:56:38 +0000</created>
                <updated>Sun, 29 Oct 2023 21:57:09 +0000</updated>
                            <resolved>Fri, 23 Apr 2021 01:31:32 +0000</resolved>
                                                    <fixVersion>5.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3734643" author="xgen-internal-githook" created="Fri, 23 Apr 2021 01:21:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Dianna Hohensee&apos;, &apos;email&apos;: &apos;dianna.hohensee@mongodb.com&apos;, &apos;username&apos;: &apos;DiannaHohensee&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-54714&quot; title=&quot;Concurrency workloads for queries on time-series collections&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-54714&quot;&gt;&lt;del&gt;SERVER-54714&lt;/del&gt;&lt;/a&gt; Concurrency workloads for queries on time-series collection indexes&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3f96a89c6275fcb59b306c1a68fc1b2d244ca4c7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3f96a89c6275fcb59b306c1a68fc1b2d244ca4c7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3708148" author="dianna.hohensee" created="Thu, 8 Apr 2021 16:06:40 +0000"  >&lt;p&gt;Notes:&lt;/p&gt;

&lt;p&gt;can use &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/jstests/concurrency/fsm_workloads/insert_ttl_timeseries.js&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/master/jstests/concurrency/fsm_workloads/insert_ttl_timeseries.js&lt;/a&gt; as a template for time-series workload tips&lt;/p&gt;

&lt;p&gt;initialize collection with 10 documents, say.&lt;br/&gt;
8 states, 4 for creating indexes, 4 for queries&lt;/p&gt;

&lt;p&gt;4 index states:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;create time index&lt;/li&gt;
	&lt;li&gt;create meta index&lt;/li&gt;
	&lt;li&gt;drop time index&lt;/li&gt;
	&lt;li&gt;drop meta index&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;4 query states:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;query all documents by meta&lt;/li&gt;
	&lt;li&gt;query all documents by time&lt;/li&gt;
	&lt;li&gt;query subset of documents by meta&lt;/li&gt;
	&lt;li&gt;query subset of documents by time&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Whether a query uses an index or not cannot be certain, but the documents returned should be consistent either way.&lt;/p&gt;</comment>
                    </comments>
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                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="1639908">SERVER-54966</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1915127">SERVER-61178</issuekey>
        </issuelink>
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