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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-63586] Retry to recover the sharding state until it succeeds</title>
                <link>https://jira.mongodb.org/browse/SERVER-63586</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When a shard starts, if the sharding state&#160;recovery&#160;document indicates that were metadata change&#160;operations in flight, it contacts the primary config server in order &lt;a href=&quot;https://github.com/10gen/mongo/blob/23376f506bf0ee9cb64cdf212a618224a1184859/src/mongo/db/s/sharding_state_recovery.cpp#L260-L267&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;to retrive the most recent opTime&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;This procedure should retry until it succeeds, but there is a corner case causing the shard process to crash: when &lt;a href=&quot;https://github.com/10gen/mongo/blob/1cc5df724ab48604e19a8b2f3703563c553b1ba0/src/mongo/db/s/sharding_logging.cpp#L198&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the returned command status is &lt;/a&gt; &lt;a href=&quot;https://github.com/10gen/mongo/blob/1cc5df724ab48604e19a8b2f3703563c553b1ba0/src/mongo/db/s/sharding_logging.cpp#L198&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;NamespaceExists&lt;/tt&gt;&lt;/a&gt; (perfectly expected scenario), the logic also checks the &lt;em&gt;write concern status&lt;/em&gt;&#160;and &lt;a href=&quot;https://github.com/10gen/mongo/blob/1cc5df724ab48604e19a8b2f3703563c553b1ba0/src/mongo/db/s/sharding_logging.cpp#L202&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;possibly raises an error&lt;/a&gt;. If the primary config server stepped down, the write concerne status would be &lt;tt&gt;InterruptedDueToReplStateChange&lt;/tt&gt;, &lt;a href=&quot;https://github.com/10gen/mongo/blob/58b7a5be37e56989f015d6964cb31df073b95168/src/mongo/db/mongod_main.cpp#L684&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the error is converted to an exception by the caller&lt;/a&gt; and process crashes.&lt;br/&gt;
&#160;&lt;br/&gt;
 A possible solution would be to retry the command for the primary config server when &lt;a href=&quot;https://github.com/10gen/mongo/blob/1cc5df724ab48604e19a8b2f3703563c553b1ba0/src/mongo/db/s/sharding_logging.cpp#L197-L207&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the write conversion status is not ok and the command status is part of a specific list of errors&lt;/a&gt; (that includes &lt;tt&gt;NamespaceExists&lt;/tt&gt;).&lt;/p&gt;</description>
                <environment></environment>
        <key id="1982116">SERVER-63586</key>
            <summary>Retry to recover the sharding state until it succeeds</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="allison.easton@mongodb.com">Allison Easton</assignee>
                                    <reporter username="antonio.fuschetto@mongodb.com">Antonio Fuschetto</reporter>
                        <labels>
                            <label>sharding-wfbf-day</label>
                    </labels>
                <created>Fri, 11 Feb 2022 18:14:06 +0000</created>
                <updated>Sun, 29 Oct 2023 21:42:36 +0000</updated>
                            <resolved>Mon, 7 Mar 2022 14:42:10 +0000</resolved>
                                                    <fixVersion>6.0.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4394929" author="xgen-internal-githook" created="Mon, 7 Mar 2022 14:33:04 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Allison Easton&apos;, &apos;email&apos;: &apos;allison.easton@mongodb.com&apos;, &apos;username&apos;: &apos;allisoneaston&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-63586&quot; title=&quot;Retry to recover the sharding state until it succeeds&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-63586&quot;&gt;&lt;del&gt;SERVER-63586&lt;/del&gt;&lt;/a&gt; Retry to recover the sharding state until it succeeds&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/57e6550a16d66d503ee2402046637b00409e8a0d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/57e6550a16d66d503ee2402046637b00409e8a0d&lt;/a&gt;&lt;/p&gt;</comment>
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