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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-12151] Improve slaveDelay behavior during transition from initial sync to steady state</title>
                <link>https://jira.mongodb.org/browse/SERVER-12151</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;After performing an initial sync, a node will transition to secondary/primary. Transitioning to a readable state (secondary/primary/etc) does not observe/respect the slaveDelay which may lead to user confusion if the node is queried with the expectation that the data is not newer than the expected delay.&lt;/p&gt;

&lt;p&gt;Due to the way replication works (that we are copying live data during initial sync, which may be after slaveDelay line) we cannot get to a consistent and valid state without current data.&lt;/p&gt;</description>
                <environment></environment>
        <key id="102996">SERVER-12151</key>
            <summary>Improve slaveDelay behavior during transition from initial sync to steady state</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="9">Done</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="matt.dannenberg">Matt Dannenberg</reporter>
                        <labels>
                            <label>PM248</label>
                    </labels>
                <created>Tue, 17 Dec 2013 22:29:30 +0000</created>
                <updated>Tue, 6 Dec 2022 05:13:50 +0000</updated>
                            <resolved>Thu, 3 May 2018 15:51:01 +0000</resolved>
                                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1881828" author="spencer" created="Thu, 3 May 2018 15:51:01 +0000"  >&lt;p&gt;The goal of initial sync is to get you joined into the cluster at a consistent state.&#160; I think if the moment you come out of initial sync you are more caught up than your slaveDelay, that&apos;s fine.&#160; The point of slaveDelay is to have a node to query against in the case of user error corrupting the primary, but the slaveDelayed node is useless for that if it&apos;s not consistent.&#160; I think becoming secondary and only then delaying oplog application is the desired behavior.&lt;/p&gt;</comment>
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