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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-20530] mongos with stale config returns wrong results when useClientClusterCursor=true</title>
                <link>https://jira.mongodb.org/browse/SERVER-20530</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Mongos returns null result for&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; db.user.findOne({x:1}) &lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt; 
&lt;p&gt;When mongo has correct sharding data it returns a document.&lt;/p&gt;

&lt;p&gt;The bug happens when mongo caches stale config where user collection is unsharded.&lt;br/&gt;
Instead of returning null mongos should receive RecvStaleConfig error and reload configuration.&lt;/p&gt;</description>
                <environment></environment>
        <key id="230705">SERVER-20530</key>
            <summary>mongos with stale config returns wrong results when useClientClusterCursor=true</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="9">Done</resolution>
                                        <assignee username="misha.tyulenev@mongodb.com">Misha Tyulenev</assignee>
                                    <reporter username="misha.tyulenev@mongodb.com">Misha Tyulenev</reporter>
                        <labels>
                    </labels>
                <created>Mon, 21 Sep 2015 15:22:11 +0000</created>
                <updated>Wed, 7 Oct 2015 21:35:24 +0000</updated>
                            <resolved>Thu, 24 Sep 2015 14:39:06 +0000</resolved>
                                                    <fixVersion>3.1.9</fixVersion>
                                    <component>Querying</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1043652" author="xgen-internal-githook" created="Fri, 25 Sep 2015 17:28:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jrassi&apos;, u&apos;name&apos;: u&apos;Jason Rassi&apos;, u&apos;email&apos;: u&apos;rassi@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20530&quot; title=&quot;mongos with stale config returns wrong results when useClientClusterCursor=true&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20530&quot;&gt;&lt;del&gt;SERVER-20530&lt;/del&gt;&lt;/a&gt; Disable useCCC in coll_epoch_test1.js&lt;/p&gt;

&lt;p&gt;Reverts changes to coll_epoch_test1.js from a6ccf45d.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9b96ee5e6316d5f1bb1d2f49920574a934c18969&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9b96ee5e6316d5f1bb1d2f49920574a934c18969&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1042586" author="xgen-internal-githook" created="Thu, 24 Sep 2015 20:06:23 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jrassi&apos;, u&apos;name&apos;: u&apos;Jason Rassi&apos;, u&apos;email&apos;: u&apos;rassi@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20530&quot; title=&quot;mongos with stale config returns wrong results when useClientClusterCursor=true&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20530&quot;&gt;&lt;del&gt;SERVER-20530&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20568&quot; title=&quot;Secondaries must not throw shard version exceptions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20568&quot;&gt;&lt;del&gt;SERVER-20568&lt;/del&gt;&lt;/a&gt; Disable useCCC in sharding_balance4.js&lt;/p&gt;

&lt;p&gt;Reverts changes to sharding_balance4.js from a6ccf45d.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/11febdeeb39c8dbcda39f22e6860cb434f3d64a6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/11febdeeb39c8dbcda39f22e6860cb434f3d64a6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1042371" author="xgen-internal-githook" created="Thu, 24 Sep 2015 18:01:31 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;mikety&apos;, u&apos;name&apos;: u&apos;Misha Tyulenev&apos;, u&apos;email&apos;: u&apos;misha@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20530&quot; title=&quot;mongos with stale config returns wrong results when useClientClusterCursor=true&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20530&quot;&gt;&lt;del&gt;SERVER-20530&lt;/del&gt;&lt;/a&gt; enable useClusterClientCursor code path for fixed jstests&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3ccc759d5c101104ca2dd584993ee27b8c209ad3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3ccc759d5c101104ca2dd584993ee27b8c209ad3&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1041995" author="xgen-internal-githook" created="Thu, 24 Sep 2015 14:21:36 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;mikety&apos;, u&apos;name&apos;: u&apos;Misha Tyulenev&apos;, u&apos;email&apos;: u&apos;misha@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20530&quot; title=&quot;mongos with stale config returns wrong results when useClientClusterCursor=true&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20530&quot;&gt;&lt;del&gt;SERVER-20530&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20568&quot; title=&quot;Secondaries must not throw shard version exceptions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20568&quot;&gt;&lt;del&gt;SERVER-20568&lt;/del&gt;&lt;/a&gt; mongos with stale config returns wrong results&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a6ccf45d2a6239604cdbf820b9db5cb6d45e851e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a6ccf45d2a6239604cdbf820b9db5cb6d45e851e&lt;/a&gt;&lt;/p&gt;</comment>
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