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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-77826] Consider hashing eventIdentifier in resume token</title>
                <link>https://jira.mongodb.org/browse/SERVER-77826</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The &lt;tt&gt;eventIdentifier&lt;/tt&gt; field in a change stream resume token is currently encoded as the raw &lt;tt&gt;documentKey&lt;/tt&gt; or &lt;tt&gt;operationDescription&lt;/tt&gt; of the associated event. It is therefore of indeterminate size, and since resume tokens are repeated several times in a batch of results (&lt;tt&gt;_id&lt;/tt&gt;, sort key, &lt;tt&gt;postBatchResumeToken&lt;/tt&gt;) this places some constraints on the maximum size of an event.&lt;/p&gt;

&lt;p&gt;For the telemetry and query settings projects, we have opted to encode query shape as a SHA-256 hash, considering this sufficient to avoid collisions. We should consider doing the same for &lt;tt&gt;eventIdentifier&lt;/tt&gt;.&lt;/p&gt;</description>
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        <key id="2359351">SERVER-77826</key>
            <summary>Consider hashing eventIdentifier in resume token</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>
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                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="bernard.gorman@mongodb.com">Bernard Gorman</reporter>
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                <created>Tue, 6 Jun 2023 08:45:02 +0000</created>
                <updated>Wed, 7 Jun 2023 01:00:49 +0000</updated>
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