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    <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-45126] Allow change stream to resume from the earliest oplog entry</title>
                <link>https://jira.mongodb.org/browse/SERVER-45126</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The current implementation of change stream allow a user to:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Start a change stream from the latest oplog entry&lt;/li&gt;
	&lt;li&gt;Resume after or start after a resume token&lt;/li&gt;
	&lt;li&gt;Start at a timestamp&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;If we use a token that is not in the oplog or the timestamp is outside the oplog range, the change stream will fail. &lt;/p&gt;

&lt;p&gt;Once a failure happens, the user will have to restart the change stream.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Proposition&lt;/b&gt;:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Add a method &lt;tt&gt;startAtFirst()&lt;/tt&gt; which the MongoDB cluster would interpret as &quot;start this change stream at the first oplog entry (oldest) that exists on a majority of nodes&quot;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Thanks&lt;/p&gt;
</description>
                <environment></environment>
        <key id="1052022">SERVER-45126</key>
            <summary>Allow change stream to resume from the earliest oplog entry</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="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="davenson.lombard@mongodb.com">Davenson Lombard</reporter>
                        <labels>
                    </labels>
                <created>Fri, 13 Dec 2019 15:56:17 +0000</created>
                <updated>Tue, 6 Dec 2022 02:40:13 +0000</updated>
                            <resolved>Tue, 17 Dec 2019 16:08:11 +0000</resolved>
                                                                    <component>Querying</component>
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