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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-18306] mongo shard remove fail with warning: cannot remove pending chunk [{ _id: -9037293457323899541 }, { _id: -9022987269115127569 }), this shard does not contain the chunk</title>
                <link>https://jira.mongodb.org/browse/SERVER-18306</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;I am using mongo 2.6 server and  I have over 100k record in shard collection.&lt;/p&gt;

&lt;p&gt;when I perform&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;db.runCommand( { removeShard: &quot;shard_h&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;few collection are manage to move except the 100krecord collection. I got this error on other shard mongo log.&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;2015-05-04T06:49:43.729+0000 [migrateThread] about to log metadata event: { _id: &quot;server1-2015-05-04T06:49:43-554716878565296884b22213&quot;, server: &quot;server2&quot;, clientAddr: &quot;:27017&quot;, time: new Date(1430722183729), what: &quot;moveChunk.to&quot;, ns: &quot;data&quot;, details: { min: { _id: -9037293457323899541 }, max: { _id: -9022987269115127569 }, note: &quot;aborted&quot;, errmsg: &quot;aborting migration, shard is missing indexes and collection is not empty. Non-trivial index creation should be scheduled manually&quot; } }&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;2015-05-04T06:49:43.738+0000 [migrateThread] warning: cannot remove pending chunk [{ _id: -9037293457323899541 }, { _id: -9022987269115127569 }), this shard does not contain the chunk&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;2015-05-04T06:49:43.738+0000 [migrateThread] warning: cannot remove pending chunk [{ _id: -9037293457323899541 }, { _id: -9022987269115127569 }), this shard does not contain the chunk&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</description>
                <environment></environment>
        <key id="201747">SERVER-18306</key>
            <summary>mongo shard remove fail with warning: cannot remove pending chunk [{ _id: -9037293457323899541 }, { _id: -9022987269115127569 }), this shard does not contain the chunk</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="sam.kleinman">Sam Kleinman</assignee>
                                    <reporter username="tuapuikia">Stan Wong</reporter>
                        <labels>
                    </labels>
                <created>Mon, 4 May 2015 07:00:20 +0000</created>
                <updated>Mon, 4 May 2015 20:06:46 +0000</updated>
                            <resolved>Mon, 4 May 2015 20:06:46 +0000</resolved>
                                    <version>2.6.7</version>
                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="904621" author="samk" created="Mon, 4 May 2015 20:06:37 +0000"  >&lt;p&gt;It looks like the &quot;warning: cannot remove pending chunk&quot; message is benign and is safe to ignore: the balancer is just attempting to remove an operation that never occurred. &lt;/p&gt;

&lt;p&gt;The first error likely reports the blocking issue here: an index that exists on the shard that you&apos;re removing (i.e. the &quot;from&quot; shard in these migrations) does not exist on one of the target shards. If you generate a list of indexes on the collection (&lt;tt&gt;db.&amp;lt;collection&amp;gt;.getIndexes()&lt;/tt&gt;, make sure that all these indexes exist on the target shard. When this is complete the migrations should be able to continue and the shard removal should work. &lt;/p&gt;

&lt;p&gt;Because the SERVER project is for reporting bugs or feature suggestions for the MongoDB itself, I&apos;m going to go ahead and close this ticket. If you have additional issues with the migration, those questions might be better addressed to one of the MongoDB-related support forums, such as the &lt;a href=&quot;http://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-users group&lt;/a&gt; or &lt;a href=&quot;http://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Stack Overflow with the &lt;tt&gt;mongodb&lt;/tt&gt; tag&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Hope this help,&lt;br/&gt;
Sam&lt;/p&gt;
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