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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-34073] Allow creating transactions with readconcerns other than &apos;snapshot&apos;, upconvert to &apos;snapshot&apos;</title>
                <link>https://jira.mongodb.org/browse/SERVER-34073</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Transactions will be allowed with readConcern levels &quot;snapshot&quot;, &quot;majority&quot;, or &quot;local&quot;. Levels &quot;majority&quot; and &quot;local&quot; will upconverted to &quot;snapshot&quot; and keep any other options such as &quot;afterClusterTime&quot;. Levels &quot;majority&quot; and &quot;local&quot; with &quot;afterOpTime&quot; will not be allowed, since &quot;afterOpTime&quot; is internal and not exposed to end users, and thus not supported with level:&apos;snapshot&apos;&lt;/p&gt;</description>
                <environment></environment>
        <key id="515328">SERVER-34073</key>
            <summary>Allow creating transactions with readconcerns other than &apos;snapshot&apos;, upconvert to &apos;snapshot&apos;</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="tess.avitabile@mongodb.com">Tess Avitabile</assignee>
                                    <reporter username="spencer@mongodb.com">Spencer Brody</reporter>
                        <labels>
                    </labels>
                <created>Thu, 22 Mar 2018 19:34:45 +0000</created>
                <updated>Sun, 29 Oct 2023 22:33:27 +0000</updated>
                            <resolved>Fri, 13 Apr 2018 14:36:55 +0000</resolved>
                                                    <fixVersion>3.7.4</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>11</watches>
                                                                                                                <comments>
                            <comment id="1863565" author="xgen-internal-githook" created="Fri, 13 Apr 2018 14:36:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;tess.avitabile@mongodb.com&apos;, &apos;name&apos;: &apos;Tess Avitabile&apos;, &apos;username&apos;: &apos;tessavitabile&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34073&quot; title=&quot;Allow creating transactions with readconcerns other than &amp;#39;snapshot&amp;#39;, upconvert to &amp;#39;snapshot&amp;#39;&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34073&quot;&gt;&lt;del&gt;SERVER-34073&lt;/del&gt;&lt;/a&gt; Allow creating transactions with readConcerns other than &apos;snapshot&apos;, upconvert to &apos;snapshot&apos;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/235858ceee5d209d5e10579b79cfdc3bad7ff877&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/235858ceee5d209d5e10579b79cfdc3bad7ff877&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1862729" author="greg.mckeon" created="Thu, 12 Apr 2018 17:31:01 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=shane.harvey&quot; class=&quot;user-hover&quot; rel=&quot;shane.harvey&quot;&gt;shane.harvey&lt;/a&gt; marking this drivers changes needed so you know when it lands.&lt;/p&gt;</comment>
                            <comment id="1847288" author="tess.avitabile" created="Tue, 27 Mar 2018 23:17:19 +0000"  >&lt;p&gt;Yes&lt;/p&gt;</comment>
                            <comment id="1847260" author="siyuan.zhou@10gen.com" created="Tue, 27 Mar 2018 22:47:34 +0000"  >&lt;p&gt;If the read concern is omitted, do we default it to &quot;local&quot; and then upconvert it to &quot;snapshot&quot;? CC &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=max.hirschhorn&quot; class=&quot;user-hover&quot; rel=&quot;max.hirschhorn&quot;&gt;max.hirschhorn&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="1846590" author="tess.avitabile" created="Tue, 27 Mar 2018 15:46:57 +0000"  >&lt;p&gt;Marking this as dependent on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34052&quot; title=&quot;Require &amp;#39;startTransaction&amp;#39;:true on first operation of a multi-statement transaction&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34052&quot;&gt;&lt;del&gt;SERVER-34052&lt;/del&gt;&lt;/a&gt;, since we are changing the way we detect the first operation in a transaction.&lt;/p&gt;</comment>
                            <comment id="1845605" author="schwerin" created="Mon, 26 Mar 2018 19:29:56 +0000"  >&lt;p&gt;I&apos;d let you upconvert  &quot;local&quot; and &quot;majority&quot;. I&apos;d consider letting you upconvert &quot;available&quot;, but let&apos;s leave that for the future. I doubt anyone will ask for a transaction at read concern &quot;available&quot;.&lt;/p&gt;</comment>
                            <comment id="1845516" author="spencer" created="Mon, 26 Mar 2018 18:30:58 +0000"  >&lt;p&gt;I think local and majority should be upconverted.  Linearizable should be forbidden within a transaction.  Not sure about &apos;available&apos; - &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=schwerin&quot; class=&quot;user-hover&quot; rel=&quot;schwerin&quot;&gt;schwerin&lt;/a&gt;?&lt;/p&gt;

&lt;p&gt;We also will need to support afterClusterTime with readConcern snapshot (but probably don&apos;t need to support afterOpTime, which shouldn&apos;t be used anywhere except within sharding on the config servers)&lt;/p&gt;</comment>
                            <comment id="1845501" author="tess.avitabile" created="Mon, 26 Mar 2018 18:24:54 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=spencer&quot; class=&quot;user-hover&quot; rel=&quot;spencer&quot;&gt;spencer&lt;/a&gt;, &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=schwerin&quot; class=&quot;user-hover&quot; rel=&quot;schwerin&quot;&gt;schwerin&lt;/a&gt;, what readConcerns should we allow you to upconvert to snapshot? For example, I assume we don&apos;t want to upconvert linearizable to snapshot. And we currently do not allow afterOpTime to be used with snapshot.&lt;/p&gt;</comment>
                    </comments>
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                                        <issuelink>
            <issuekey id="514678">SERVER-34052</issuekey>
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                            <issuelinktype id="10320">
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                                                                <inwardlinks description="is documented by">
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            <issuekey id="526809">DOCS-11605</issuekey>
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                            <issuelinktype id="10010">
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            <issuekey id="519489">SERVER-34219</issuekey>
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            <issuelink>
            <issuekey id="506003">SERVER-33677</issuekey>
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