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    <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-26356] disallow support for linearizable reads with pv0</title>
                <link>https://jira.mongodb.org/browse/SERVER-26356</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="319262">SERVER-26356</key>
            <summary>disallow support for linearizable reads with pv0</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="9">Done</resolution>
                                        <assignee username="judah.schvimer@mongodb.com">Judah Schvimer</assignee>
                                    <reporter username="milkie@mongodb.com">Eric Milkie</reporter>
                        <labels>
                    </labels>
                <created>Tue, 27 Sep 2016 19:37:08 +0000</created>
                <updated>Sat, 19 Nov 2016 00:05:09 +0000</updated>
                            <resolved>Tue, 15 Nov 2016 16:24:19 +0000</resolved>
                                                    <fixVersion>3.4.0-rc4</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1434571" author="xgen-internal-githook" created="Tue, 15 Nov 2016 16:23:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;judahschvimer&apos;, u&apos;name&apos;: u&apos;Judah Schvimer&apos;, u&apos;email&apos;: u&apos;judah@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-26356&quot; title=&quot;disallow support for linearizable reads with pv0&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-26356&quot;&gt;&lt;del&gt;SERVER-26356&lt;/del&gt;&lt;/a&gt; disable linearizable read concern with pv0&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/84d33796a712e389395df98cca13c9e88f9490b1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/84d33796a712e389395df98cca13c9e88f9490b1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1420655" author="judah.schvimer" created="Fri, 28 Oct 2016 16:29:35 +0000"  >&lt;p&gt;The linearizable read test fails with PV0 because it assumes that a partitioned primary will stay primary for a minute, during which we test that a linearizable read fails. In PV0 the partitioned primary steps down much faster. We should replace this test (or add an extra test) that has a primary, secondary, and arbiter, and puts a partition between the secondary and the other two nodes. This way the primary stays primary but can&apos;t satisfy linearizable reads. Alternatively we can just pause replication on two of the secondaries instead of creating a partition. Both of these tests are implementation specific to some extent, which could be one negative.&lt;/p&gt;</comment>
                            <comment id="1418904" author="judah.schvimer" created="Wed, 26 Oct 2016 21:35:03 +0000"  >&lt;p&gt;If we don&apos;t enable the tests, we need to disallow support for pv0.&lt;/p&gt;</comment>
                            <comment id="1408718" author="milkie" created="Fri, 14 Oct 2016 15:37:36 +0000"  >&lt;p&gt;I almost got this working except that apply_batch_only_goes_forward.js hangs in the replica_set_legacy suite.  I didn&apos;t get a chance to debug why, but I am concerned that it is a real deadlock.&lt;/p&gt;</comment>
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                                                                <inwardlinks description="is related to">
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            <issuekey id="331733">SERVER-27025</issuekey>
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