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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-22822] Prevent mongod step down during moveChunk in balance_repl.js and sharding_rs2.js</title>
                <link>https://jira.mongodb.org/browse/SERVER-22822</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Check if either balance_repl.js or sharding_rs2.js would be affected by making their mongod secondaries unelectable so as to prevent stepdowns. Or perhaps removing the secondaries if they are unimportant.&lt;/p&gt;

&lt;p&gt;The mongod stepdown is causing moveChunk to fail, and ultimately the tests to fail, in the sharding_continous_config_stepdown suite.&lt;/p&gt;

&lt;p&gt;From the test failures, it appears that the heartbeat is received by the primary mongod, but not executed for some time, during which time the primary decides to step down because it hasn&apos;t heard from anyone. Or the secondary doesn&apos;t hear from anyone and runs for election&lt;/p&gt;</description>
                <environment></environment>
        <key id="267583">SERVER-22822</key>
            <summary>Prevent mongod step down during moveChunk in balance_repl.js and sharding_rs2.js</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="dianna.hohensee@mongodb.com">Dianna Hohensee</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                            <label>test-only</label>
                    </labels>
                <created>Tue, 23 Feb 2016 23:08:36 +0000</created>
                <updated>Fri, 18 Nov 2016 01:56:27 +0000</updated>
                            <resolved>Fri, 26 Feb 2016 18:29:36 +0000</resolved>
                                                    <fixVersion>3.2.4</fixVersion>
                    <fixVersion>3.3.3</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1186181" author="xgen-internal-githook" created="Fri, 26 Feb 2016 18:29:16 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;DiannaHohensee&apos;, u&apos;name&apos;: u&apos;Dianna Hohensee&apos;, u&apos;email&apos;: u&apos;dianna.hohensee@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-22822&quot; title=&quot;Prevent mongod step down during moveChunk in balance_repl.js and sharding_rs2.js&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-22822&quot;&gt;&lt;del&gt;SERVER-22822&lt;/del&gt;&lt;/a&gt; prevent mongod stepdown in balance_repl.js and sharding_rs2.js&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 90b12248502592281f430890c838b2834d11d1b3)&lt;br/&gt;
Branch: v3.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4f3f65608ef6223c7b97439f7fcec0e4e864cce0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4f3f65608ef6223c7b97439f7fcec0e4e864cce0&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1186150" author="dianna.hohensee" created="Fri, 26 Feb 2016 18:08:06 +0000"  >&lt;p&gt;This should be backported to v3.2 because the sharding_continuous_config_stepdown suite will eventually be enabled in v3.2.&lt;/p&gt;</comment>
                            <comment id="1186146" author="xgen-internal-githook" created="Fri, 26 Feb 2016 18:05:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;DiannaHohensee&apos;, u&apos;name&apos;: u&apos;Dianna Hohensee&apos;, u&apos;email&apos;: u&apos;dianna.hohensee@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-22822&quot; title=&quot;Prevent mongod step down during moveChunk in balance_repl.js and sharding_rs2.js&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-22822&quot;&gt;&lt;del&gt;SERVER-22822&lt;/del&gt;&lt;/a&gt; prevent mongod stepdown in balance_repl.js and sharding_rs2.js&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/90b12248502592281f430890c838b2834d11d1b3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/90b12248502592281f430890c838b2834d11d1b3&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1183696" author="spencer" created="Wed, 24 Feb 2016 21:12:46 +0000"  >&lt;p&gt;Ah I see, I was thinking it was the config server that stepped down, not the shard.&lt;/p&gt;</comment>
                            <comment id="1182610" author="schwerin" created="Wed, 24 Feb 2016 01:04:27 +0000"  >&lt;p&gt;The problem is that a shard steps down during moveChunk, but none of the&lt;br/&gt;
tests are robust to that. We could investigate making them retry moveChunk&lt;br/&gt;
on shard failure, I suppose. We&apos;d have to hit up every test, and I doubt&lt;br/&gt;
they&apos;re trying to test stepdown of a shard during migration.&lt;/p&gt;

&lt;p&gt;On Tue, Feb 23, 2016, 6:30 PM Spencer T Brody (JIRA) &amp;lt;jira@mongodb.org&amp;gt;&lt;/p&gt;
</comment>
                            <comment id="1182529" author="spencer" created="Tue, 23 Feb 2016 23:30:07 +0000"  >&lt;p&gt;I&apos;m sure those aren&apos;t the only tests that do chunk migrations - are all such tests going to have this problem?  Is the real problem a lack of retries when communicating with the config servers during chunk migration?&lt;/p&gt;</comment>
                    </comments>
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                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="269512">SERVER-22935</issuekey>
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