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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-30617] Re-enable support for array values in idempotency checker for update sequences</title>
                <link>https://jira.mongodb.org/browse/SERVER-30617</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The test cases added as part of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-29944&quot; title=&quot;Implement a basic idempotency checker for testing oplog idempotency&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-29944&quot;&gt;&lt;del&gt;SERVER-29944&lt;/del&gt;&lt;/a&gt; explicitly prevent array values from being generated by the &lt;tt&gt;DocumentStructureEnumerator&lt;/tt&gt; and the &lt;tt&gt;UpdateSequenceGenerator&lt;/tt&gt; by setting &lt;tt&gt;skipSubArrs=true&lt;/tt&gt; and &lt;tt&gt;arrProbability=0.0&lt;/tt&gt;, respectively. There are ambiguities that arise when using paths such as &quot;a.0&quot; since it could refer to the first element of an array &lt;em&gt;or&lt;/em&gt; a field within a document called &quot;0&quot;. While they do not lead to idempotency issues directly, they do require the generation of update sequences to be more intelligent by ensuring that the sequence of update operations is something that a primary would have written to its oplog.&lt;/p&gt;

&lt;p&gt;If the starting document isn&apos;t ever observed by calling &lt;tt&gt;IdempotencyTest::runOp()&lt;/tt&gt; for each operation, then a final update should be append to the end of the sequence that &lt;tt&gt;$set&lt;/tt&gt;&apos;s the fields in the document to the appropriate value and &lt;tt&gt;$unset&lt;/tt&gt;&apos;s any other fields in the document not present in the starting document. This ensures that the starting document can be considered a valid state for the document in some snapshot (as would happen during initial sync&apos;s cloning process).&lt;/p&gt;</description>
                <environment></environment>
        <key id="415512">SERVER-30617</key>
            <summary>Re-enable support for array values in idempotency checker for update sequences</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-tig">DO NOT USE - Backlog - Test Infrastructure Group (TIG)</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                            <label>close</label>
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                <created>Fri, 11 Aug 2017 15:45:51 +0000</created>
                <updated>Thu, 27 Sep 2018 22:23:54 +0000</updated>
                            <resolved>Thu, 27 Sep 2018 22:23:54 +0000</resolved>
                                                                    <component>Replication</component>
                    <component>Testing Infrastructure</component>
                                        <votes>0</votes>
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