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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-7674] MoveChunk should allow you to specify a chunk via its bounds</title>
                <link>https://jira.mongodb.org/browse/SERVER-7674</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Right now when you call moveChunk on mongos, you specify a chunk to move via a &quot;find&quot;, e.g. &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;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;  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;&amp;gt; db.adminCommand({moveChunk : &quot;test.foo&quot; , find : {a : 5} , to : &quot;shard0001&quot;})&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;
&lt;p&gt;The semantics of this are &quot;find the chunk that contains the doc &lt;/p&gt;
{a : 5}
&lt;p&gt;, and move it to shard0001.&quot; &lt;/p&gt;

&lt;p&gt;With hashed shard keys, the chunks are ranges of hashes, so a single chunk might be from say &lt;/p&gt;
{ &quot;a&quot; : NumberLong(&quot;8234&quot;) }
&lt;p&gt; --&amp;gt;&amp;gt; &lt;/p&gt;
{ &quot;a&quot; : NumberLong(&quot;9543&quot;) }
&lt;p&gt;.  Right now there&apos;s no way to specify this particular chunk unless you use a doc whose &apos;a&apos; value hashes to somewhere in the range [8234,9543).&lt;/p&gt;

&lt;p&gt;As alternative to the &quot;find&quot; syntax, moveChunk should also allow you to specify a chunk via its upper and lower bounds, as with the following syntax:&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;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;  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;&amp;gt; db.adminCommand({moveChunk : &quot;test.foo&quot; , bounds : [ {a : NumberLong(&quot;8234&quot;)} , { &quot;a&quot; : NumberLong(&quot;9543&quot;) } ] , to : &quot;shard0001&quot;})&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;This allows the user to be very explicit about which chunk they want to move (the command would just return an error if no chunk with those upper and lower bounds exists).  &lt;/p&gt;</description>
                <environment></environment>
        <key id="56491">SERVER-7674</key>
            <summary>MoveChunk should allow you to specify a chunk via its bounds</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="matulef">Kevin Matulef</assignee>
                                    <reporter username="matulef">Kevin Matulef</reporter>
                        <labels>
                    </labels>
                <created>Thu, 15 Nov 2012 17:15:18 +0000</created>
                <updated>Tue, 27 Oct 2015 14:42:24 +0000</updated>
                            <resolved>Thu, 29 Nov 2012 18:47:11 +0000</resolved>
                                    <version>2.3.0</version>
                                    <fixVersion>2.3.2</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="202413" author="auto" created="Thu, 29 Nov 2012 18:43:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-11-29T18:30:23Z&apos;, u&apos;email&apos;: u&apos;matulef@10gen.com&apos;, u&apos;name&apos;: u&apos;Kevin Matulef&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7674&quot; title=&quot;MoveChunk should allow you to specify a chunk via its bounds&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7674&quot;&gt;&lt;del&gt;SERVER-7674&lt;/del&gt;&lt;/a&gt; add option to specify a chunk via its bounds&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a54fd9e2707aa441a449a5cfe41c230ebc8ff80a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a54fd9e2707aa441a449a5cfe41c230ebc8ff80a&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="62058">DOCS-990</issuekey>
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