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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-66079] Make change stream jstests compatible with transactions</title>
                <link>https://jira.mongodb.org/browse/SERVER-66079</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Some change stream test cases are labelled as &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1b7212031db4acc9efe18e4e38b82066753fc711/jstests/change_streams/oplog_rewrite/change_stream_match_pushdown_to_rewrite.js#L9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;change_stream_does_not_expect_txns&lt;/a&gt;. One &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1b7212031db4acc9efe18e4e38b82066753fc711/buildscripts/resmokeconfig/suites/change_streams_multi_stmt_txn_mongos_passthrough.yml#L15..L16&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;explanation&lt;/a&gt; I found about this label is &quot;These tests make assumptions about change stream results that are no longer true once operations get bundled into &lt;span class=&quot;error&quot;&gt;&amp;#91;multi-document&amp;#93;&lt;/span&gt; transactions.&quot; So I take it the label excludes these tests from suites that involve multi-document transactions. So far so good.&lt;/p&gt;

&lt;p&gt;However we&apos;ve recently made a change (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-63047&quot; title=&quot;Make delete batches fully transactional&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-63047&quot;&gt;&lt;del&gt;SERVER-63047&lt;/del&gt;&lt;/a&gt;) that replicates multi-doc writes belonging to a single WriteUnitOfWork transactionally: these operations now generate an applyOps oplog entry. This has been a source of integration issues with tests using the change_stream_does_not_expect_txns label, likely due to the fact that these tests don&apos;t expect transaction (applyOps) oplog entries because multi-document transactions are excluded from these tests, which doesn&apos;t necessarily holds true any longer.&lt;/p&gt;

&lt;p&gt;As this new mode of operation introduced in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-63047&quot; title=&quot;Make delete batches fully transactional&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-63047&quot;&gt;&lt;del&gt;SERVER-63047&lt;/del&gt;&lt;/a&gt; is planned to become to become the preferred - if not the only - way to write to multiple documents in a WriteUnitOfWork (see &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64506&quot; title=&quot;Unify replication back-end of TransactionParticipant and WUOW&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64506&quot;&gt;SERVER-64506&lt;/a&gt; and its related project), we should consider making these change stream tests support transactions, to ease integration moving forward.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2036318">SERVER-66079</key>
            <summary>Make change stream jstests compatible with transactions</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="josef.ahmad@mongodb.com">Josef Ahmad</reporter>
                        <labels>
                            <label>quick-tech-debt</label>
                    </labels>
                <created>Fri, 29 Apr 2022 13:38:02 +0000</created>
                <updated>Tue, 6 Dec 2022 00:10:43 +0000</updated>
                                                                                                <votes>0</votes>
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