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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-4605] explain() needs to better handle versioning</title>
                <link>https://jira.mongodb.org/browse/SERVER-4605</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Explain needs to better handle migrations during the explain process - similar to improvements for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4220&quot; title=&quot;refactor getChunkManager() and sharding code to better handle parallel queries.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4220&quot;&gt;&lt;del&gt;SERVER-4220&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;sharding_multiple_collections.js reproduces intermittently.  &lt;/p&gt;</description>
                <environment></environment>
        <key id="27620">SERVER-4605</key>
            <summary>explain() needs to better handle versioning</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="greg_10gen">Greg Studer</assignee>
                                    <reporter username="greg_10gen">Greg Studer</reporter>
                        <labels>
                    </labels>
                <created>Tue, 3 Jan 2012 21:49:40 +0000</created>
                <updated>Mon, 11 Jul 2016 18:34:09 +0000</updated>
                            <resolved>Wed, 25 Jan 2012 14:55:25 +0000</resolved>
                                                    <fixVersion>2.1.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="82035" author="auto" created="Tue, 24 Jan 2012 17:54:55 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;gregstuder&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4605&quot; title=&quot;explain() needs to better handle versioning&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4605&quot;&gt;&lt;del&gt;SERVER-4605&lt;/del&gt;&lt;/a&gt; don&apos;t double-query for explain results&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4a39fd4c166549ac7297e5e705ff2c974363e207&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4a39fd4c166549ac7297e5e705ff2c974363e207&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="81882" author="auto" created="Tue, 24 Jan 2012 03:56:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: top level retry for old sharding meta data&lt;br/&gt;
attempt of a fix for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4605&quot; title=&quot;explain() needs to better handle versioning&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4605&quot;&gt;&lt;del&gt;SERVER-4605&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b09709c7cce24ec72bfeb59cb0acd589eba98019&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b09709c7cce24ec72bfeb59cb0acd589eba98019&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="81072" author="greg_10gen" created="Thu, 19 Jan 2012 20:22:40 +0000"  >&lt;p&gt;Also exhibits here:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://buildbot.mongodb.org:8081/builders/Linux%2064-bit%20DEBUG/builds/677/steps/compile/logs/stdio&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://buildbot.mongodb.org:8081/builders/Linux%2064-bit%20DEBUG/builds/677/steps/compile/logs/stdio&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
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                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="24592">SERVER-4220</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="27981">SERVER-4651</issuekey>
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                            <attachment id="14298" name="output_from_sharding_multiple_collections.js" size="61447" author="greg_10gen" created="Tue, 3 Jan 2012 21:49:40 +0000"/>
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