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    <title>MongoDB Jira</title>
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    <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-43262] Devise general solution for BFs needing a higher stepdown interval in stepdown suites</title>
                <link>https://jira.mongodb.org/browse/SERVER-43262</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This ticket came out of a discussion we had on the replication team around a BF (linked) where a retryable write runs out of retries because nodes do not manage to catch-up in the amount of time given between stepdown cycles (in a heavy workload). While the solution to that specific BF could be to blacklist/downsize that workload, we hope to come up with a general solution (or policy) for what happens when the time given by stepdown cycles turns out to not be sufficient, so that we do not have to deal with that on a BF-by-BF basis. &lt;/p&gt;

&lt;p&gt;The purpose of this ticket is to serve as a place to link such BFs and to house a discussion on how we can more broadly address this class of failures.&lt;/p&gt;

&lt;p&gt;A few ideas that came up during one of our BF meetings:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Increase the stepdown interval across the board.&lt;/li&gt;
	&lt;li&gt;Make the interval configurable from one variant to another (so we can increase for slow variants).&lt;/li&gt;
	&lt;li&gt;Wait more between retries of operations in our tests and/or increase their deadlines.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Feel free to voice your opinions in the comments.&lt;/p&gt;</description>
                <environment></environment>
        <key id="922971">SERVER-43262</key>
            <summary>Devise general solution for BFs needing a higher stepdown interval in stepdown suites</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>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-stm">Backlog - Server Tooling and Methods (STM)</assignee>
                                    <reporter username="vesselina.ratcheva@mongodb.com">Vesselina Ratcheva</reporter>
                        <labels>
                            <label>shell-ipc</label>
                    </labels>
                <created>Wed, 11 Sep 2019 00:16:26 +0000</created>
                <updated>Tue, 6 Dec 2022 02:48:26 +0000</updated>
                                                                            <component>Replication</component>
                    <component>Testing Infrastructure</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="4539859" author="steven.vannelli" created="Tue, 10 May 2022 21:27:29 +0000"  >&lt;p&gt;Moving this ticket to the Backlog and removing the &quot;Backlog&quot; fixVersion as per our latest policy for using fixVersions. &lt;/p&gt;</comment>
                            <comment id="2415763" author="max.hirschhorn@10gen.com" created="Wed, 11 Sep 2019 01:41:33 +0000"  >&lt;blockquote&gt;
&lt;p&gt;Wait more between retries of operations in our tests and/or increase their deadlines.&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;If the operation is going to always take a certain amount of time to succeed, then more retries won&apos;t help because it&apos;ll keep getting interrupted by the stepdown. This is why the &lt;tt&gt;set7.js&lt;/tt&gt; and &lt;tt&gt;max_doc_size.js&lt;/tt&gt; tests were blacklisted from the &lt;tt&gt;retryable_writes_jscore_stepdown_passthrough.yml&lt;/tt&gt; test suite as part of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-37071&quot; title=&quot;Blacklist set7.js and max_doc_size.js from retryable_writes_jscore_stepdown_passthrough&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-37071&quot;&gt;&lt;del&gt;SERVER-37071&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I think the ideal (but more complex to implement) would be for the stepdown to wait the maximum of the configured interval and however long it takes for the client to succeed in its retry. We currently lack a way for the mongo shell to signal to the stepdown thread that its retry of the interrupted operation has succeeded.&lt;/p&gt;</comment>
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