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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-36101] Replication should not depend on the presence of lastStableCheckpointTimestamp in status reports to identify recoverable rollback capable nodes</title>
                <link>https://jira.mongodb.org/browse/SERVER-36101</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This might require surfacing some other indicator in the storage engine up into replication. Also replication test infrastructure changes.&lt;/p&gt;</description>
                <environment></environment>
        <key id="571002">SERVER-36101</key>
            <summary>Replication should not depend on the presence of lastStableCheckpointTimestamp in status reports to identify recoverable rollback capable nodes</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="13201">Fixed</resolution>
                                        <assignee username="dianna.hohensee@mongodb.com">Dianna Hohensee</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                    </labels>
                <created>Thu, 12 Jul 2018 20:11:47 +0000</created>
                <updated>Sun, 29 Oct 2023 22:29:52 +0000</updated>
                            <resolved>Thu, 26 Jul 2018 14:48:26 +0000</resolved>
                                                    <fixVersion>4.1.2</fixVersion>
                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1956686" author="xgen-internal-githook" created="Wed, 25 Jul 2018 20:12:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Dianna Hohensee&apos;, &apos;email&apos;: &apos;dianna.hohensee@10gen.com&apos;, &apos;username&apos;: &apos;DiannaHohensee&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36101&quot; title=&quot;Replication should not depend on the presence of lastStableCheckpointTimestamp in status reports to identify recoverable rollback capable nodes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36101&quot;&gt;&lt;del&gt;SERVER-36101&lt;/del&gt;&lt;/a&gt; Replication should not depend on the presence of lastStableCheckpointTimestamp in status reports to identify recoverable rollback capable nodes&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e7c2cbf88bc07549d634613049358214dbbaac4b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e7c2cbf88bc07549d634613049358214dbbaac4b&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1949417" author="dianna.hohensee" created="Tue, 17 Jul 2018 18:09:17 +0000"  >&lt;p&gt;New approach. Deprecating exposure of &lt;a href=&quot;https://docs.mongodb.com/manual/reference/command/replSetGetStatus/#replSetGetStatus.lastStableCheckpointTimestamp&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;lastStableCheckpointTimestamp&lt;/a&gt; and adding a replacement field lastStableRecoveryTimestamp, to provide a generic interface that storage engines can choose how to implement.&lt;/p&gt;</comment>
                            <comment id="1946184" author="dianna.hohensee" created="Thu, 12 Jul 2018 21:54:47 +0000"  >&lt;p&gt;It looks like replSetGetStatus already returns stableTimestamp in the guise of &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a9e1b69204e7999d5f31013532cc5c9842371f78/src/mongo/shell/replsettest.js#L1317&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;res.optimes.readConcernMajorityOpTime.ts here&lt;/a&gt;, so I could just add checking for a non-zero value of that to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a9e1b69204e7999d5f31013532cc5c9842371f78/src/mongo/shell/replsettest.js#L1326&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this check&lt;/a&gt;. Then the shell helper function will act accordingly and be satisfied.&lt;/p&gt;

&lt;p&gt;For reference, because I was curious, the requires_persistence tag protects inMemory from running with tests that restarts server nodes, so awaitLastStableCheckpointTimestamp() just needs to await a stable timestamp in the inMemory scenario.&lt;/p&gt;

&lt;p&gt;Then &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a9e1b69204e7999d5f31013532cc5c9842371f78/buildscripts/resmokelib/testing/hooks/periodic_kill_secondaries.py#L270-L271&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;periodic_kill_secondaries.py&lt;/a&gt; and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a9e1b69204e7999d5f31013532cc5c9842371f78/buildscripts/resmokelib/testing/fixtures/replicaset.py#L304&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;replicaset.py&lt;/a&gt; need to be updated. replicaset.py would change similarly to the above. periodic_kill_secondaries.py needs the replSetTest command to return a stable timestamp.&lt;/p&gt;</comment>
                            <comment id="1946057" author="judah.schvimer" created="Thu, 12 Jul 2018 20:29:09 +0000"  >&lt;p&gt;It might be okay to just surface the &apos;stableTimestamp&apos; as well as the &apos;lastStableCheckpointTimestamp&apos; and non-durable storage engines can just wait on the former rather than the latter.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10320">
                    <name>Documented</name>
                                                                <inwardlinks description="is documented by">
                                        <issuelink>
            <issuekey id="579536">DOCS-11924</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10020">
                    <name>Gantt Dependency</name>
                                            <outwardlinks description="has to be done before">
                                        <issuelink>
            <issuekey id="573377">SERVER-36194</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="has to be done after">
                                        <issuelink>
            <issuekey id="564268">SERVER-35805</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="493927">SERVER-33165</issuekey>
        </issuelink>
                            </outwardlinks>
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