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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-15809] Shard Tags trump RemoveShard command </title>
                <link>https://jira.mongodb.org/browse/SERVER-15809</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When removing a shard from a cluster where tags have been assigned to that particular shard, the removeShard admin command will not remove chunks that fall within that tag range. &lt;/p&gt;

&lt;p&gt;This is resolvable by removing the shard tag from that shard, and assigning to one (or more) other shards, at which point the balancer takes care of removing the remaining chunks.&lt;/p&gt;

&lt;p&gt;I&apos;m not sure if this behavior is intended, but I would have assumed that the removeShard command would &quot;trump&quot; the shard tags. &lt;/p&gt;</description>
                <environment></environment>
        <key id="165614">SERVER-15809</key>
            <summary>Shard Tags trump RemoveShard command </summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="-1">Unassigned</assignee>
                                    <reporter username="fordjp@gmail.com">Jason Ford</reporter>
                        <labels>
                    </labels>
                <created>Mon, 27 Oct 2014 15:01:43 +0000</created>
                <updated>Fri, 7 Apr 2023 14:22:40 +0000</updated>
                            <resolved>Fri, 5 Dec 2014 22:36:09 +0000</resolved>
                                    <version>2.6.3</version>
                    <version>2.6.5</version>
                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="779979" author="ramon.fernandez" created="Fri, 5 Dec 2014 22:35:50 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=fordjp&quot; class=&quot;user-hover&quot; rel=&quot;fordjp&quot;&gt;fordjp&lt;/a&gt;, apologies for the late reply. This is the expected behavior: unless some other shards are tagged with the same tags the balancer can&apos;t know where to put these chunks. The &lt;tt&gt;mongos&lt;/tt&gt; logs show more details:&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;   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;2014-12-05T17:24:53.963-0500 [Balancer] distributed lock &apos;balancer/tab:27017:1417817884:1804289383&apos; acquired, ts : 548230b500d46ee8f4cab525&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&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;   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;2014-12-05T17:24:53.979-0500 [Balancer] chunk { _id: &quot;test.foo-x_1000.0&quot;, lastmod: Timestamp 1000|4, lastmodEpoch: ObjectId(&apos;54822f9200d46ee8f4cab4f2&apos;), ns: &quot;test.foo&quot;, min: { x: 1000.0 }, max: { x: MaxKey }, shard: &quot;shard01&quot; } is not on a shard with the right tag: S02&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&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;   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;2014-12-05T17:24:53.979-0500 [Balancer] no where to put it :(&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&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;   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;2014-12-05T17:24:53.979-0500 [Balancer] no available shards to take chunks for tag [S02]&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&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-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;2014-12-05T17:24:53.980-0500 [Balancer] distributed lock &apos;balancer/tab:27017:1417817884:1804289383&apos; unlocked. &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;For these chunks to be moveable to a different shard, the tags of the shard you&apos;re removing need to exist on other shards.&lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;</comment>
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