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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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            <title>[SERVER-67665] Disable oplog rewrites if featureFlagTimeSeriesChangeStreams is enabled</title>
                <link>https://jira.mongodb.org/browse/SERVER-67665</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-67666&quot; title=&quot;Allow watching system.buckets collections in full cluster change streams&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-67666&quot;&gt;&lt;del&gt;SERVER-67666&lt;/del&gt;&lt;/a&gt;, when we create a change stream on a single timeseries collection, we will change the namespace to the underlying bucket collection under the hood, and everything can proceed as normal. &lt;/p&gt;

&lt;p&gt;However, in this scenario, the oplog rewrites will all be wrong. Therefore, we need to disable oplog rewrites on timeseries collections if this feature flag is enabled.&lt;/p&gt;

&lt;p&gt;If we&apos;re creating a change stream on a whole database or a whole cluster, then the change stream will involve multiple collections, which potentially includes regular collections as well as timeseries collections. To account for both, we need to selectively enable oplog rewrites for non-timeseries change streams.&#160;&lt;/p&gt;

&lt;p&gt;To do this, we need to add a &lt;tt&gt;buildTimeseriesOperationFilter&lt;/tt&gt; branch in the oplog filter that allows all operations on timeseries collections through. They will be filtered post-transformation.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2079848">SERVER-67665</key>
            <summary>Disable oplog rewrites if featureFlagTimeSeriesChangeStreams is enabled</summary>
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                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="1" iconUrl="https://jira.mongodb.org/images/icons/statuses/open.png" description="">Open</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="jennifer.peshansky@mongodb.com">Jennifer Peshansky</reporter>
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                <created>Wed, 29 Jun 2022 19:34:21 +0000</created>
                <updated>Tue, 6 Jun 2023 17:38:06 +0000</updated>
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