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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-34032] Add tests of resuming a change stream after an &quot;invalidate&quot; change</title>
                <link>https://jira.mongodb.org/browse/SERVER-34032</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This is a gap in our test coverage. I think it should fail.&lt;/p&gt;</description>
                <environment></environment>
        <key id="514486">SERVER-34032</key>
            <summary>Add tests of resuming a change stream after an &quot;invalidate&quot; change</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="ian.boros@mongodb.com">Ian Boros</assignee>
                                    <reporter username="charlie.swanson@mongodb.com">Charlie Swanson</reporter>
                        <labels>
                    </labels>
                <created>Wed, 21 Mar 2018 14:13:16 +0000</created>
                <updated>Sun, 29 Oct 2023 22:33:30 +0000</updated>
                            <resolved>Mon, 30 Apr 2018 15:29:04 +0000</resolved>
                                                    <fixVersion>4.0.0-rc0</fixVersion>
                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1881085" author="xgen-internal-githook" created="Wed, 2 May 2018 21:35:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;ian.boros@10gen.com&apos;, &apos;name&apos;: &apos;Ian Boros&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34032&quot; title=&quot;Add tests of resuming a change stream after an &amp;quot;invalidate&amp;quot; change&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34032&quot;&gt;&lt;del&gt;SERVER-34032&lt;/del&gt;&lt;/a&gt; part 2: Relax tests which attempt to resume a change stream after invalidate&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a54e19b6d2e4c027057c9c7bbb6fa76ec60364fc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a54e19b6d2e4c027057c9c7bbb6fa76ec60364fc&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1878512" author="charlie.swanson" created="Mon, 30 Apr 2018 21:36:28 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=spencer&quot; class=&quot;user-hover&quot; rel=&quot;spencer&quot;&gt;spencer&lt;/a&gt; let&apos;s talk in person when you have a second.&lt;/p&gt;</comment>
                            <comment id="1878494" author="spencer" created="Mon, 30 Apr 2018 21:22:37 +0000"  >&lt;p&gt;Woah, why are we allowing resuming after an &apos;invalidate&apos;?&#160; This is a major design change for changeStreams.&#160; &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=david.storch&quot; class=&quot;user-hover&quot; rel=&quot;david.storch&quot;&gt;david.storch&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=asya&quot; class=&quot;user-hover&quot; rel=&quot;asya&quot;&gt;asya&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=charlie.swanson&quot; class=&quot;user-hover&quot; rel=&quot;charlie.swanson&quot;&gt;charlie.swanson&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1877921" author="xgen-internal-githook" created="Mon, 30 Apr 2018 15:28:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;ian.boros@10gen.com&apos;, &apos;name&apos;: &apos;Ian Boros&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34032&quot; title=&quot;Add tests of resuming a change stream after an &amp;quot;invalidate&amp;quot; change&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34032&quot;&gt;&lt;del&gt;SERVER-34032&lt;/del&gt;&lt;/a&gt; add tests for resuming using an &quot;invalidate&quot; resumeToken&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3d43d9420c12c2f47d614fc6f2546cf80742817e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3d43d9420c12c2f47d614fc6f2546cf80742817e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1859707" author="charlie.swanson" created="Mon, 9 Apr 2018 21:04:59 +0000"  >&lt;p&gt;Until &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34181&quot; title=&quot;Expose the &amp;quot;ts&amp;quot; value from oplog entries in the changestream as &amp;quot;clusterTime&amp;quot;&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34181&quot;&gt;&lt;del&gt;SERVER-34181&lt;/del&gt;&lt;/a&gt; there will be no exposed cluster time. After that, I believe they could resume using that cluster time. This is all untested though, hence this ticket.&lt;/p&gt;

&lt;p&gt;Change streams were not designed to be able to resume after an invalidation, so if implemented correctly I believe the current machinery will disallow resuming after an invalidation.&lt;/p&gt;</comment>
                            <comment id="1859601" author="asya" created="Mon, 9 Apr 2018 20:52:46 +0000"  >&lt;p&gt;&amp;gt; I think it should fail.&lt;/p&gt;

&lt;p&gt;But then how do they resume?  (if it&apos;s on db, for instance)?  Can they open a new change stream with cluster time from the last entry they had?&lt;/p&gt;</comment>
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