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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-83114] Default timeseries options may lead to false error reporting for create in v7.0</title>
                <link>https://jira.mongodb.org/browse/SERVER-83114</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-75818&quot; title=&quot;Fix time-series options when sharding a collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-75818&quot;&gt;&lt;del&gt;SERVER-75818&lt;/del&gt;&lt;/a&gt; slightly changed the &lt;tt&gt;_shardsvrCreateCollection&lt;/tt&gt; command in v7.1 to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/e33a721ee04b7d622e95ebb5948c94ac78275f4e/src/mongo/db/s/shardsvr_create_collection_command.cpp#L116-L117&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;call into validateAndSetBucketingParameters&lt;/a&gt; that &lt;a href=&quot;https://github.com/mongodb/mongo/blob/aef2177cfe7b0702380acf1ef1a5c0a6577c6f7e/src/mongo/db/timeseries/timeseries_options.cpp#L367-L372&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;adds to the timeseries options&lt;/a&gt; some default values for &lt;b&gt;bucketMaxSpanSeconds&lt;/b&gt; and &lt;b&gt;granularity&lt;/b&gt;. Such options are then &lt;a href=&quot;https://github.com/mongodb/mongo/blob/e33a721ee04b7d622e95ebb5948c94ac78275f4e/src/mongo/db/s/shardsvr_create_collection_command.cpp#L134-L135&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;forwarded to the create collection coordinator&lt;/a&gt; and persisted in the coordinator document.&lt;/p&gt;

&lt;p&gt;This can lead to a (very improbable) flow:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;The &lt;tt&gt;shardCollection&lt;/tt&gt; operation starts on a v7.1 binary in FCV v7.0&lt;/li&gt;
	&lt;li&gt;Binaries are replaced&lt;/li&gt;
	&lt;li&gt;The &lt;tt&gt;shardCollection&lt;/tt&gt; operation is resumed from disk on a v7.0 binary&lt;/li&gt;
	&lt;li&gt;The &lt;tt&gt;shardCollection&lt;/tt&gt; operation completes&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;If the same &lt;tt&gt;shardCollection&lt;/tt&gt; operation is retried by a router between 3 and 4, the mongod will erroneously report &lt;a href=&quot;https://github.com/mongodb/mongo/blob/4cdac1e55c22b2aa66ad5ba3d47181f7c80d1e29/src/mongo/db/s/create_collection_coordinator.cpp#L442-L446&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;an error&lt;/a&gt; because of the missing default timeseries options (&lt;b&gt;granularity&lt;/b&gt; and &lt;b&gt;bucketMaxSpanSeconds&lt;/b&gt;).&lt;/p&gt;</description>
                <environment></environment>
        <key id="2496684">SERVER-83114</key>
            <summary>Default timeseries options may lead to false error reporting for create in v7.0</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="jordi.olivares-provencio@mongodb.com">Jordi Olivares Provencio</assignee>
                                    <reporter username="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</reporter>
                        <labels>
                    </labels>
                <created>Fri, 10 Nov 2023 13:54:46 +0000</created>
                <updated>Thu, 18 Jan 2024 10:13:41 +0000</updated>
                            <resolved>Thu, 18 Jan 2024 10:13:41 +0000</resolved>
                                                    <fixVersion>7.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="6021325" author="xgen-internal-githook" created="Thu, 18 Jan 2024 10:12:10 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Jordi Olivares Provencio&apos;, &apos;email&apos;: &apos;jordi.olivares-provencio@mongodb.com&apos;, &apos;username&apos;: &apos;jordiolivares&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-83114&quot; title=&quot;Default timeseries options may lead to false error reporting for create in v7.0&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-83114&quot;&gt;&lt;del&gt;SERVER-83114&lt;/del&gt;&lt;/a&gt; Modify timeseries Create Coordinator document only under a feature flag (#17940)&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: 501b1f1efd61dd87b75ad526148a25e931f96e7a&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5bcbc14f6a4b29f0f9140e3272f901e6707b4cc1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5bcbc14f6a4b29f0f9140e3272f901e6707b4cc1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5870815" author="gregory.noma" created="Fri, 10 Nov 2023 14:08:26 +0000"  >&lt;p&gt;Might be somewhat similar to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76805&quot; title=&quot;Granularity field automatically added to manually-created time-series buckets collections on v6.1- but not v6.2+&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76805&quot;&gt;SERVER-76805&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2309259">SERVER-75818</issuekey>
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            <issuekey id="2546563">SERVER-85251</issuekey>
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