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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-71278] Remove retry for SnapshotUnavailable error in global indexes code</title>
                <link>https://jira.mongodb.org/browse/SERVER-71278</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Remove the sleep in the catalog cache added by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-71168&quot; title=&quot;Indexes on config server global indexes collections should be created during first FCV stage&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-71168&quot;&gt;&lt;del&gt;SERVER-71168&lt;/del&gt;&lt;/a&gt;, designed to allow time for the config time to advance beyond the creation time of config.csrs.indexes.&lt;/p&gt;

&lt;p&gt;Context:&lt;/p&gt;

&lt;p&gt;During FCV upgrade when enabling the&#160;&lt;br/&gt;
gGlobalIndexesShardingCatalog feature flag, we are &lt;a href=&quot;https://github.com/mongodb/mongo/blob/baec3c777441b2332fb199737fd8b76616e4a6f3/src/mongo/db/s/sharding_util.cpp#L186-L215&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;creating a new collection on the config server - config.csrs.indexes&lt;/a&gt;. The mongoS is also running an aggregation on this collection &lt;a href=&quot;https://github.com/mongodb/mongo/blob/baec3c777441b2332fb199737fd8b76616e4a6f3/src/mongo/s/catalog_cache.cpp#L939&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;with snapshot read concern&lt;/a&gt;. Since the mongoS has no concept of FCV, it will start sending the aggregation to the config server as soon as the binary is changed to one with the feature flag enabled, regardless of the FCV of the config server. We have encountered the SnapshotUnavailable error after creating the collection and its indexes but before the journal flush happens.&lt;br/&gt;
Once this project finishes, presumably the aggregation will return NamespaceNotFound at the previous config time sent in the aggregation rather than SnapshotUnavailable, and the sleep to allow for journaling to complete can be removed.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2182214">SERVER-71278</key>
            <summary>Remove retry for SnapshotUnavailable error in global indexes code</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="gregory.wlodarek@mongodb.com">Gregory Wlodarek</assignee>
                                    <reporter username="allison.easton@mongodb.com">Allison Easton</reporter>
                        <labels>
                            <label>techdebt</label>
                    </labels>
                <created>Fri, 11 Nov 2022 14:39:03 +0000</created>
                <updated>Sun, 29 Oct 2023 21:30:44 +0000</updated>
                            <resolved>Fri, 19 May 2023 00:39:30 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5436356" author="xgen-internal-githook" created="Thu, 18 May 2023 21:16:53 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;username&apos;: &apos;GWlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-71278&quot; title=&quot;Remove retry for SnapshotUnavailable error in global indexes code&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-71278&quot;&gt;&lt;del&gt;SERVER-71278&lt;/del&gt;&lt;/a&gt; Remove retry for SnapshotUnavailable error in global indexes code&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4e246edc4364f389f36af9367b3109da7e4c8013&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4e246edc4364f389f36af9367b3109da7e4c8013&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2068715">SERVER-67289</issuekey>
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