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    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-60565] Ensure newly created time-series buckets do not contain problematic mixed-schema data</title>
                <link>https://jira.mongodb.org/browse/SERVER-60565</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently buckets are allowed to contain measurement with arbitrarily mixed schema. This can lead to complicated type-comparison semantics (as seen in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-59505&quot; title=&quot;Time-series query on mixed, nested measurements can miss some events&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-59505&quot;&gt;&lt;del&gt;SERVER-59505&lt;/del&gt;&lt;/a&gt;). In order to facilitate indexing, we need to maintain certain invariants about what types of data can co-exist within a single bucket.&lt;/p&gt;

&lt;p&gt;This will require changes to the time-series insert path. Namely, our current MinMax structure for maintaining the control summary data will be retrofitted to determine if an incoming measurement contains an incompatible schema relative to the measurements which have already landed in a given bucket. If so, we will close the bucket and open a new one for the new measurement.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1893804">SERVER-60565</key>
            <summary>Ensure newly created time-series buckets do not contain problematic mixed-schema data</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="9">Done</resolution>
                                        <assignee username="dan.larkin-york@mongodb.com">Dan Larkin-York</assignee>
                                    <reporter username="dan.larkin-york@mongodb.com">Dan Larkin-York</reporter>
                        <labels>
                    </labels>
                <created>Fri, 8 Oct 2021 14:47:36 +0000</created>
                <updated>Wed, 11 Oct 2023 19:51:11 +0000</updated>
                            <resolved>Wed, 27 Oct 2021 17:38:47 +0000</resolved>
                                                    <fixVersion>5.2.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4152307" author="xgen-internal-githook" created="Wed, 27 Oct 2021 17:37:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Dan Larkin-York&apos;, &apos;email&apos;: &apos;dan.larkin-york@mongodb.com&apos;, &apos;username&apos;: &apos;dhly-etc&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-60565&quot; title=&quot;Ensure newly created time-series buckets do not contain problematic mixed-schema data&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60565&quot;&gt;&lt;del&gt;SERVER-60565&lt;/del&gt;&lt;/a&gt; Ensure newly created time-series buckets do not contain problematic mixed-schema data&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/dd8c32c66cbb401af315364e8d6843e521d96e72&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/dd8c32c66cbb401af315364e8d6843e521d96e72&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="1908788">SERVER-60978</issuekey>
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