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<channel>
    <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>
    </build-info>


<item>
            <title>[SERVER-45844] UUID shard key values cause failed chunk migrations</title>
                <link>https://jira.mongodb.org/browse/SERVER-45844</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;UUID shard key values result in chunk _ids (in the chunks collection) that aren&apos;t correctly inferred when moving chunks. That is, the chunk _id represents data as BinData. The result is that the chunk cannot be found.&lt;/p&gt;

&lt;h6&gt;&lt;a name=&quot;originaldescription&quot;&gt;&lt;/a&gt;original description&lt;/h6&gt;

&lt;p&gt;Hi we are using mongo sharded cluster running with 4.0.5.( this cluster was upgraded from 3.4.9-&lt;del&gt;&amp;gt;3.6.9&lt;/del&gt;&amp;gt;4.0.5 couple of months back)&lt;/p&gt;

&lt;p&gt;Architecture:&lt;br/&gt;
&#160; &#160; &#160; 3 mongos&lt;br/&gt;
&#160; &#160; &#160; &#160;config server running as replica set ( 1 primary + 2 secondaries)&lt;br/&gt;
&#160; &#160; &#160; 1 shard with 3 nodes running as replica set ( 1 primary + 2 secondaries)&lt;/p&gt;

&lt;p&gt;Since shard1 is running out of disk space, we added shard2.After adding shard2, we see Balancer is not moving chunks and it&apos;s throwing following message&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;2020-01-29T17:35:21.256+0000 I SHARDING [Balancer] Balancer move keychain.keyring: [\{ keyringId: MinKey }, \{ keyringId: UUID(&quot;00000000-2da7-4f75-826f-fb8939b25f3f&quot;) }), from prod-mongodb-digitalplatform-02-shard1, to prod-mongodb-digitalplatform-02-shard2 failed :: caused by :: IncompatibleShardingMetadata: Chunk move was not successful :: caused by :: Tried to find the chunk for &apos;keychain.keyring-keyringId_UUID(&quot;06597831-055b-425f-8f83-63d6935bc55b&quot;), but found no chunks&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;2020-01-29T17:35:21.256+0000 I SHARDING [Balancer] about to log metadata event into actionlog: \{ _id: &quot;ip-10-120-122-158-2020-01-29T17:35:21.256+0000-5e31c259018fac481bd1ee62&quot;, server: &quot;ip-10-120-122-158&quot;, clientAddr: &quot;&quot;, time: new Date(1580319321256), what: &quot;balancer.round&quot;, ns: &quot;&quot;, details: { executionTimeMillis: 559, errorOccured: false, candidateChunks: 1, chunksMoved: 0 } }&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;we tried even moving some of chunks manually and they also failed with same reason.&lt;/p&gt;

&lt;p&gt;&lt;tt&gt;sh.status()&lt;/tt&gt; output is attached&lt;/p&gt;

&lt;p&gt;We issued the following command  to include chunk info from above sh.status() output to move one chunk&lt;/p&gt;

&lt;p&gt;command:&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;db.adminCommand( { moveChunk : &quot;keychain.keyring&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;                 bounds : [{ &quot;keyringId&quot; : UUID(&quot;fff68145-c9f1-4915-a2da-5f66d02820ad&quot;) }, { &quot;keyringId&quot; : UUID(&quot;fffb99c8-3726-47cb-94b5-6637a36788c0&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;                 to : &quot;prod-mongodb-digitalplatform-02-shard2&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;   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;                  } )&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; Output:&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;mongos&amp;gt; db.adminCommand( { moveChunk : &quot;keychain.keyring&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;...                  bounds : [{ &quot;keyringId&quot; : UUID(&quot;fff68145-c9f1-4915-a2da-5f66d02820ad&quot;) }, { &quot;keyringId&quot; : UUID(&quot;fffb99c8-3726-47cb-94b5-6637a36788c0&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;...                  to : &quot;prod-mongodb-digitalplatform-02-shard2&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;...                   } )&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;{&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;	&quot;ok&quot; : 0,&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;	&quot;errmsg&quot; : &quot;Chunk move was not successful :: caused by :: Tried to find the chunk for &apos;keychain.keyring-keyringId_UUID(\&quot;fff68145-c9f1-4915-a2da-5f66d02820ad\&quot;), but found no chunks&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;	&quot;code&quot; : 105,&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;	&quot;codeName&quot; : &quot;IncompatibleShardingMetadata&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;	&quot;operationTime&quot; : Timestamp(1580320429, 23),&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;	&quot;$clusterTime&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;		&quot;clusterTime&quot; : Timestamp(1580320429, 39),&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;		&quot;signature&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;			&quot;hash&quot; : BinData(0,&quot;3e0AlrK695L04KiXhy+axkBMaNk=&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;			&quot;keyId&quot; : NumberLong(&quot;6762645768143634453&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;            }&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;            }&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;            }&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; Apart from this , we  also issued  flushRouterConfig multiple times and we restarted all mongos  and even replaced all config servers with new servers. But still same issue exists.&lt;/p&gt;

&lt;p&gt;  Note: featureCompatibilityVersion is set to 4.0  on all shards and config server.&lt;/p&gt;

&lt;p&gt;Please let me know if there is any known bug around this  or  any configuration that we need to tweak on our side.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1120432">SERVER-45844</key>
            <summary>UUID shard key values cause failed chunk migrations</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="3">Duplicate</resolution>
                                        <assignee username="cheahuychou.mao@mongodb.com">Cheahuychou Mao</assignee>
                                    <reporter username="haidilip83@gmail.com">Dilip Kolasani</reporter>
                        <labels>
                    </labels>
                <created>Wed, 29 Jan 2020 18:20:12 +0000</created>
                <updated>Wed, 20 May 2020 02:34:32 +0000</updated>
                            <resolved>Wed, 29 Apr 2020 17:49:40 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="3060982" author="chou.mao" created="Wed, 29 Apr 2020 17:49:40 +0000"  >&lt;p&gt;Closing this ticket as the fix was completed in&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47745&quot; title=&quot;Make chunk query in ShardingCatalogManager compatible with chunks created in 3.4&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47745&quot;&gt;&lt;del&gt;SERVER-47745&lt;/del&gt;&lt;/a&gt;.&#160;&lt;/p&gt;</comment>
                            <comment id="3060385" author="xgen-internal-githook" created="Wed, 29 Apr 2020 14:11:53 +0000"  >&lt;p&gt;The commit for&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47745&quot; title=&quot;Make chunk query in ShardingCatalogManager compatible with chunks created in 3.4&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47745&quot;&gt;&lt;del&gt;SERVER-47745&lt;/del&gt;&lt;/a&gt;&#160;Make chunk query in ShardingCatalogManager compatible with chunks created in 3.4.&lt;/p&gt;

&lt;p&gt;Author:&lt;/p&gt;

{&apos;name&apos;: &apos;Cheahuychou Mao&apos;, &apos;email&apos;: &apos;cheahuychou.mao@mongodb.com&apos;, &apos;username&apos;: &apos;cheahuychou&apos;}

&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45844&quot; title=&quot;UUID shard key values cause failed chunk migrations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45844&quot;&gt;&lt;del&gt;SERVER-45844&lt;/del&gt;&lt;/a&gt; UUID shard key values cause failed chunk migrations&lt;br/&gt;
 Branch: v4.2&lt;br/&gt;
 &lt;a href=&quot;https://github.com/mongodb/mongo/commit/55ea26e1ad7c01038b73551ba483194967567311&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/55ea26e1ad7c01038b73551ba483194967567311&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2888633" author="haidilip83@gmail.com" created="Fri, 21 Feb 2020 15:21:52 +0000"  >&lt;p&gt;Thanks Carl. Appreciate all your help on this.&lt;/p&gt;</comment>
                            <comment id="2887313" author="carl.champain" created="Thu, 20 Feb 2020 20:13:40 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=haidilip83%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;haidilip83@gmail.com&quot;&gt;haidilip83@gmail.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Sorry for the delayed answer!&lt;br/&gt;
 The stated issue appears to be a bug related to the string representation of the UUID min key of the chunk that we used to put in the _id of the chunk&apos;s document in 4.0 and 4.2. Because of this we can&apos;t match the chunk that is attempted to be moved, even though it probably exists.&lt;br/&gt;
 We are passing this ticket along to the appropriate team for further investigation.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
 Carl&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</comment>
                            <comment id="2881133" author="haidilip83@gmail.com" created="Mon, 17 Feb 2020 15:29:18 +0000"  >&lt;p&gt;Hi  Carl,&lt;/p&gt;

&lt;p&gt;Did you get a chance to look into this ? Iam  very sorry for chasing down on this. If there is no known bug/work around this issue, we will continue add more storage to existing Shard itself.&lt;/p&gt;

&lt;p&gt;Regards&lt;br/&gt;
Dilip K&lt;/p&gt;</comment>
                            <comment id="2843143" author="carl.champain" created="Fri, 7 Feb 2020 22:20:06 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=haidilip83%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;haidilip83@gmail.com&quot;&gt;haidilip83@gmail.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;We are still investigating the issue and will let you know as soon as we have a conclusive answer.&#160;&lt;/p&gt;</comment>
                            <comment id="2785002" author="haidilip83@gmail.com" created="Wed, 5 Feb 2020 16:30:14 +0000"  >&lt;p&gt;Carl Champain,  did  you get a chance to looks at the logs and  conclude what might be reason?&lt;/p&gt;</comment>
                            <comment id="2780435" author="carl.champain" created="Mon, 3 Feb 2020 16:32:49 +0000"  >&lt;p&gt;Thanks&#160;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=haidilip83%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;haidilip83@gmail.com&quot;&gt;haidilip83@gmail.com&lt;/a&gt;!&lt;br/&gt;
 We are investigating the issue and will let you know.&lt;/p&gt;</comment>
                            <comment id="2773634" author="haidilip83@gmail.com" created="Thu, 30 Jan 2020 19:40:52 +0000"  >&lt;p&gt;Hi  Carl Champain,&lt;br/&gt;
 I have uploaded logs files from mongos/config/sharded servers.&lt;/p&gt;</comment>
                            <comment id="2773143" author="carl.champain" created="Thu, 30 Jan 2020 16:36:39 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=haidilip83%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;haidilip83@gmail.com&quot;&gt;haidilip83@gmail.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;In addition of the requested logs, could you also provide a &lt;a href=&quot;https://docs.mongodb.com/manual/reference/program/mongodump/#connect-to-a-sharded-cluster&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodump&lt;/a&gt; of your config server? &lt;br/&gt;
 The command should look like this:&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;mongodump --db=config --host=&amp;lt;hostname:port_of _the_mongos&amp;gt;&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;We&apos;ve created a secure &lt;a href=&quot;https://10gen-httpsupload.s3.amazonaws.com/upload_forms/59be1e16-a3af-4920-a69e-dda5a4bc8f07.html&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;upload portal&lt;/a&gt; for you. Files uploaded to this portal are visible only to MongoDB employees and are routinely deleted after some time.&lt;/p&gt;

&lt;p&gt;Thank you,&lt;br/&gt;
 Carl&lt;/p&gt;</comment>
                            <comment id="2771347" author="carl.champain" created="Wed, 29 Jan 2020 20:27:34 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=haidilip83%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;haidilip83@gmail.com&quot;&gt;haidilip83@gmail.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for the report.&lt;br/&gt;
 To help us understand what is happening, can you please provide the logs for:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Each of the mongos&lt;/li&gt;
	&lt;li&gt;The primary of shard1 and shard2&lt;/li&gt;
	&lt;li&gt;The primary of the config servers&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;We want to determine wether or not the metadata is stale somewhere in your cluster.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Carl&lt;/p&gt;</comment>
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