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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-70850] Replication signalDrainComplete is stuck in catalog shard POC</title>
                <link>https://jira.mongodb.org/browse/SERVER-70850</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Reproduced with jstests/sharding/delete_range_deletion_tasks_on_stepup_after_drop_collection.js.&lt;/p&gt;

&lt;p&gt;The test is doing step down and up on catalog shard, while doing a chunk migration that is supposed to fail. After step up, the former primary becomes primary again, and ReplicationCoordinatorImpl::signalDrainComplete() is invoked and never completes until the test ends. &lt;/p&gt;

&lt;p&gt;The side-effect of this is that the _makeHelloResponse() will always return &quot;i am secondary&quot;, which makes the Hello reply consumer to drop it. &lt;/p&gt;

&lt;p&gt;There is a logical deadlock during the chunk migration logic resuming on step up:&lt;br/&gt;
1. ReplicationCoordinatorExternalStateImpl::onTransitionToPrimary&lt;br/&gt;
2. ReplicationCoordinatorExternalStateImpl::_shardingOnTransitionToPrimaryHook()&lt;br/&gt;
3. ShardingStateRecovery::recover()&lt;br/&gt;
4.     // Need to fetch the latest uptime from the config server, so do a logging write&lt;br/&gt;
    ShardingLogging::get(opCtx)-&amp;gt;logChangeChecked(..., kMajorityWriteConcern)&lt;br/&gt;
at this point it should be clear that majority write concern during step up before the writes are allowed will not work...&lt;br/&gt;
5. ShardingLogging::_log()&lt;br/&gt;
6. Grid::get(opCtx) &amp;#45;&amp;gt;catalogClient()-&amp;gt;insertConfigDocument(..., kMajorityWriteConcern)&lt;br/&gt;
7. ShardLocal::_runCommand()&lt;/p&gt;

&lt;p&gt;My opinion the step 4 to write the recoveryDoc and fetch the latest uptime cannot use the majority. Just do the local write if you are a primary.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2166951">SERVER-70850</key>
            <summary>Replication signalDrainComplete is stuck in catalog shard POC</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="andrew.shuvalov@mongodb.com">Andrew Shuvalov</assignee>
                                    <reporter username="andrew.shuvalov@mongodb.com">Andrew Shuvalov</reporter>
                        <labels>
                    </labels>
                <created>Tue, 25 Oct 2022 21:21:45 +0000</created>
                <updated>Sun, 29 Oct 2023 21:31:28 +0000</updated>
                            <resolved>Thu, 27 Oct 2022 22:05:16 +0000</resolved>
                                                                                        <votes>0</votes>
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