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    <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>[DRIVERS-1439] Investigate changes in PM-1945: Bucket unpacking implementation for Time-series collections</title>
                <link>https://jira.mongodb.org/browse/DRIVERS-1439</link>
                <project id="10980" key="DRIVERS">Drivers</project>
                    <description>    &lt;div class=&quot;panel&quot; style=&quot;background-color: #c2d2c2;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;background-color: #239eb0;&quot;&gt;&lt;b&gt;Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #c2d2c2;&quot;&gt;
&lt;p&gt;    Specific downstream guidance  TBD.&lt;/p&gt;
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&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
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&lt;h4&gt;&lt;a name=&quot;Summary&quot;&gt;&lt;/a&gt;Summary&lt;/h4&gt;
&lt;p&gt;Add a way to unpack events from a bucketed format in a query referencing a time-series collection.&lt;/p&gt;

&lt;h4&gt;&lt;a name=&quot;Motivation&quot;&gt;&lt;/a&gt;Motivation&lt;/h4&gt;
&lt;p&gt;Time-series collection provides a user-friendly data model of one document per event. Internally, for performance and space reasons, the data is stored in a bucketed format (see Appendix: Storage format). Each query starts processing data at the bucket level, then uncompresses required fields from each bucket, and continues processing at the event level.&lt;/p&gt;

&lt;p&gt;The project belongs to the Time-series Support initiative.&lt;/p&gt;

&lt;h4&gt;&lt;a name=&quot;CastofCharacters&quot;&gt;&lt;/a&gt;Cast of Characters&lt;/h4&gt;
&lt;ul&gt;
	&lt;li&gt;Product Owner: Katya Kamenieva&lt;/li&gt;
	&lt;li&gt;Project Lead: Pawel Terlecki&lt;/li&gt;
	&lt;li&gt;Program Manager: Craig Homa&lt;/li&gt;
	&lt;li&gt;Drivers Contact: TBD&lt;/li&gt;
&lt;/ul&gt;



&lt;h4&gt;&lt;a name=&quot;Documentation&quot;&gt;&lt;/a&gt;Documentation&lt;/h4&gt;
&lt;p&gt;&lt;a href=&quot;http://tinyurl.com/yc83w3fn&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Scope Document&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://tinyurl.com/ycfyw8az&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Technical Design Document&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://tinyurl.com/yaqnru93&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Product Description&lt;/a&gt;&lt;/p&gt;
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        <key id="1543046">DRIVERS-1439</key>
            <summary>Investigate changes in PM-1945: Bucket unpacking implementation for Time-series collections</summary>
                <type id="11" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14707&amp;avatarType=issuetype">Epic</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                            <label>init-53-m1.0</label>
                    </labels>
                <created>Mon, 16 Nov 2020 14:32:29 +0000</created>
                <updated>Wed, 15 Feb 2023 23:10:55 +0000</updated>
                            <resolved>Mon, 16 Nov 2020 14:32:56 +0000</resolved>
                                                                            <votes>0</votes>
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                            <a href="https://jira.mongodb.org/browse/INIT-53">INIT-53</a> - Time Series
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