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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-50507] Avoid race conditions during recoverRefreshShardVersion</title>
                <link>https://jira.mongodb.org/browse/SERVER-50507</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, there is no warranty that a collection state is not going to change after &lt;a href=&quot;https://github.com/mongodb/mongo/blob/0439b7a1bf50e7dadb57da6497b4baede1974147/src/mongo/db/s/shard_filtering_metadata_refresh.cpp#L120&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;refreshing its filtering metadata&lt;/a&gt; and before &lt;a href=&quot;https://github.com/mongodb/mongo/blob/0439b7a1bf50e7dadb57da6497b4baede1974147/src/mongo/db/s/shard_filtering_metadata_refresh.cpp#L103-L107&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;acquiring the lock&lt;/a&gt; to cleanup the recover/refresh future.&lt;/p&gt;

&lt;p&gt;The &lt;em&gt;forceShardFilteringMetadataRefresh&lt;/em&gt; call should ideally be replaced by a method not acquiring locks, in order to not serialize other collection operations on it.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1451493">SERVER-50507</key>
            <summary>Avoid race conditions during recoverRefreshShardVersion</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="13201">Fixed</resolution>
                                        <assignee username="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</assignee>
                                    <reporter username="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</reporter>
                        <labels>
                            <label>PM-1645-Milestone-1</label>
                    </labels>
                <created>Tue, 25 Aug 2020 11:58:13 +0000</created>
                <updated>Sun, 29 Oct 2023 22:04:03 +0000</updated>
                            <resolved>Fri, 4 Sep 2020 08:55:28 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3375892" author="xgen-internal-githook" created="Fri, 4 Sep 2020 00:18:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Pierlauro Sciarelli&apos;, &apos;email&apos;: &apos;pierlauro.sciarelli@mongodb.com&apos;, &apos;username&apos;: &apos;pierlauro&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-50507&quot; title=&quot;Avoid race conditions during recoverRefreshShardVersion&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-50507&quot;&gt;&lt;del&gt;SERVER-50507&lt;/del&gt;&lt;/a&gt; Avoid race conditions during recoverRefreshShardVersion&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8160b517bd20397a68384004cac3a513776fae73&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8160b517bd20397a68384004cac3a513776fae73&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3364893" author="pierlauro.sciarelli" created="Fri, 28 Aug 2020 20:05:32 +0000"  >&lt;p&gt;Depends on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-50627&quot; title=&quot;Handle nested shard key fields in ShardVersionMap construction&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-50627&quot;&gt;&lt;del&gt;SERVER-50627&lt;/del&gt;&lt;/a&gt; because now that the drop is properly serialized on a recovery/refresh, it cannot proceed in case of failed CatalogCache update.&lt;/p&gt;</comment>
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