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    <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-15848] copydb appears to take out a G_X lock in some circumstances</title>
                <link>https://jira.mongodb.org/browse/SERVER-15848</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Problem&quot;&gt;&lt;/a&gt;Problem&lt;/h2&gt;
&lt;p&gt;From copydb.cpp&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/commands/copydb.cpp#L190&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/master/src/mongo/db/commands/copydb.cpp#L190&lt;/a&gt;&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;   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;            if (fromSelf) {&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;                // SERVER-4328 todo lock just the two db&apos;s not everything for the fromself case&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;                Lock::GlobalWrite lk(txn-&amp;gt;lockState());&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;                return cloner.go(txn, todb, fromhost, cloneOptions, NULL, errmsg);&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;h2&gt;&lt;a name=&quot;Solution&quot;&gt;&lt;/a&gt;Solution&lt;/h2&gt;
&lt;p&gt;For this case, perhaps taking out two DB_X locks rather than a G_X lock. &lt;/p&gt;</description>
                <environment></environment>
        <key id="165983">SERVER-15848</key>
            <summary>copydb appears to take out a G_X lock in some circumstances</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="alvin">Alvin Richards</reporter>
                        <labels>
                            <label>28qa</label>
                    </labels>
                <created>Tue, 28 Oct 2014 19:51:49 +0000</created>
                <updated>Tue, 6 Dec 2022 04:59:33 +0000</updated>
                            <resolved>Wed, 15 Aug 2018 21:18:21 +0000</resolved>
                                    <version>2.8.0-rc0</version>
                                                    <component>Concurrency</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1976882" author="asya" created="Wed, 15 Aug 2018 21:18:21 +0000"  >&lt;p&gt;copyDB has been removed, &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36257&quot; title=&quot;Remove copyDB and clone commands&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36257&quot;&gt;&lt;del&gt;SERVER-36257&lt;/del&gt;&lt;/a&gt;, closing.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</comment>
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