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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-2464] master slave inconsistencies when running master in dur mode and restarting</title>
                <link>https://jira.mongodb.org/browse/SERVER-2464</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If there is heavy write locking on the master, the slave may receive data from the oplog before it is committed on the master.&lt;/p&gt;

&lt;p&gt;1) Some data which is lost by the master on restart (because it was not committed) may be present on slave.  I have observed this in testing.&lt;br/&gt;
2) The slave may record a syncedTo point that is uncommitted on the master.  On restart the master will not return the expected op time to the slave and the slave will generate a sync exception forcing the need to reclone.  I haven&apos;t seen this in testing, but it may be possible.&lt;/p&gt;</description>
                <environment></environment>
        <key id="14396">SERVER-2464</key>
            <summary>master slave inconsistencies when running master in dur mode and restarting</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="dwight@mongodb.com">Dwight Merriman</assignee>
                                    <reporter username="aaron">Aaron Staple</reporter>
                        <labels>
                    </labels>
                <created>Wed, 2 Feb 2011 01:18:34 +0000</created>
                <updated>Tue, 31 Jan 2012 22:42:10 +0000</updated>
                            <resolved>Tue, 31 Jan 2012 22:42:10 +0000</resolved>
                                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="23472" author="aaron" created="Wed, 9 Feb 2011 15:37:39 +0000"  >&lt;p&gt;Haven&apos;t analyzed the repl sets or sharding cases at all.  Can do that if you want.&lt;/p&gt;</comment>
                            <comment id="23465" author="dwight_10gen" created="Wed, 9 Feb 2011 14:05:22 +0000"  >&lt;p&gt;we can wait to replicate perhaps until the data is committed for master/slave (only, not for repl sets)&lt;/p&gt;

&lt;p&gt;but we shouldn&apos;t make that change until we do some other optimizations that reduce the group commit latency.&lt;/p&gt;</comment>
                            <comment id="23464" author="dwight_10gen" created="Wed, 9 Feb 2011 14:00:51 +0000"  >&lt;p&gt;so i suppose with replica sets, it&apos;s ok as the secondary having fresher data, it will take over?&lt;/p&gt;

&lt;p&gt;so the problem is class master/slave only. (right?)&lt;/p&gt;</comment>
                            <comment id="23412" author="aaron" created="Tue, 8 Feb 2011 21:33:09 +0000"  >&lt;p&gt;Here is the script I used to trigger this.&lt;/p&gt;</comment>
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            <issuekey id="14612">SERVER-2506</issuekey>
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                            <attachment id="10792" name="test.js" size="528" author="aaron" created="Tue, 8 Feb 2011 21:33:09 +0000"/>
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