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<rss version="0.92" >
<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-32459] mongos incorrectly assumed collection was unsharded</title>
                <link>https://jira.mongodb.org/browse/SERVER-32459</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We have a sharded collection with approximately 170k chunks (spread across 11 replica sets) that a single mongos process incorrectly assumed was unsharded. This caused all reads/writes from that mongos process for the collection to go to the primary RS resulting in data inconsistency/loss from the view of that mongos process and the rest of the mongos processes in our environment.&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;Dec 22 13:55:07 web28 mongos.27011[99921]: [conn915497] ChunkManager loading chunks for trello.collection_1 sequenceNumber: 6047 based on: (empty)&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;Dec 22 13:55:07 web28 mongos.27011[99921]: [conn927627] ChunkManager loading chunks for trello.collection_2 sequenceNumber: 6048 based on: 41884|1||521778b1ca72fc747e2a31a5&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;Dec 22 13:55:07 web28 mongos.27011[99921]: [conn927627] ChunkManager load took 109 ms and found version 41885|1||521778b1ca72fc747e2a31a5&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;Dec 22 13:55:08 web28 mongos.27011[99921]: [conn915497] inconsistent chunks found when reloading trello.collection_1, previous version was 141470|3571||521778afca72fc747e2a31a3, this should be rare&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;Dec 22 13:55:08 web28 mongos.27011[99921]: [conn915497] ChunkManager load failed after 1858 ms and will be retried up to 2 more times&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;Dec 22 13:55:08 web28 mongos.27011[99921]: [conn915497] ChunkManager loading chunks for trello.collection_1 sequenceNumber: 6047 based on: (empty)&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;Dec 22 13:55:09 web28 mongos.27011[99921]: [conn915497] got invalid chunk version 13976|1||521778afca72fc747e2a31a3 in document { _id: &quot;trello.collection_1-idModel_ObjectId(&apos;545d1808cc454be8aed72d8b&apos;)date_new Date(1415387523080)&quot;, ns: &quot;trello.collection_1&quot;, min: { idModel: ObjectId(&apos;545d1808cc454be8aed72d8b&apos;), date: new Date(1415387523080) }, max: { idModel: ObjectId(&apos;545d182bc40615e260371473&apos;), date: new Date(1415685077013) }, shard: &quot;rs2&quot;, lastmod: Timestamp 13976000|1, lastmodEpoch: ObjectId(&apos;521778afca72fc747e2a31a3&apos;) } when trying to load differing chunks at version 0|0||000000000000000000000000&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;Dec 22 13:55:09 web28 mongos.27011[99921]: [conn915497] major change in chunk information found when reloading trello.collection_1, previous version was 0|0||000000000000000000000000&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;Dec 22 13:55:09 web28 mongos.27011[99921]: [conn915497] ChunkManager load took 872 ms and found version 0|0||000000000000000000000000&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;Dec 22 13:55:09 web28 mongos.27011[99921]: [conn915497] no chunks found for collection trello.collection_1, assuming unsharded&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;Dec 22 13:55:09 web28 mongos.27011[99921]: [conn915497] ChunkManager loading chunks for trello.collection_3 sequenceNumber: 6049 based on: (empty)&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;Dec 22 13:55:09 web28 mongos.27011[99921]: [conn915497] ChunkManager load took 1 ms and found version 93|0||56f2ce47fefe6d524c67bfe4&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;Dec 22 13:55:09 web28 mongos.27011[99921]: [conn915497] ChunkManager loading chunks for trello.collection_4 sequenceNumber: 6050 based on: (empty)&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;Dec 22 13:55:09 web28 mongos.27011[99921]: [conn915497] ChunkManager load took 0 ms and found version 25|6||5205a989629b64bf3e892fba&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;It is worth noting we were manually splitting large chunks for collection_1 in a script with the split admin command at the time. These are the relevant logs from the instance running the script.&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;Dec 22 13:54:55 admin1 mongos.27018[10455]: [conn1019044] splitting chunk [{ idModel: ObjectId(&apos;546234baf3603a0b88fa84b6&apos;), date: new Date(1430908962051) },{ id&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;Model: ObjectId(&apos;546236b3560532670a785dae&apos;), date: new Date(1445238746777) }) in collection trello.collection_1 on shard rs2&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;Dec 22 13:54:55 admin1 mongos.27018[10455]: [conn1019044] ChunkManager loading chunks for trello.collection_1 sequenceNumber: 7322 based on: 141470|3561||521778afca&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;72fc747e2a31a3&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;Dec 22 13:54:56 admin1 mongos.27018[10455]: [conn1019044] ChunkManager load took 453 ms and found version 141470|3563||521778afca72fc747e2a31a3&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;Dec 22 13:54:58 admin1 mongos.27018[10455]: [conn1019044] splitting chunk [{ idModel: ObjectId(&apos;546247903ff470605f91bdbe&apos;), date: new Date(1444235259298) },{ id&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;Model: ObjectId(&apos;54624819f94e7792881237f9&apos;), date: new Date(1418289843165) }) in collection trello.collection_1 on shard rs2&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;Dec 22 13:54:58 admin1 mongos.27018[10455]: [conn1019044] ChunkManager loading chunks for trello.collection_1 sequenceNumber: 7323 based on: 141470|3563||521778afca&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;72fc747e2a31a3&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;Dec 22 13:54:59 admin1 mongos.27018[10455]: [conn1019044] ChunkManager load took 466 ms and found version 141470|3565||521778afca72fc747e2a31a3&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;Dec 22 13:54:59 admin1 mongos.27018[10455]: [conn1019044] splitting chunk [{ idModel: ObjectId(&apos;54624bb26b3af67855b71e67&apos;), date: new Date(1435336429738) },{ id&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;Model: ObjectId(&apos;54624f2cb0a0e4dd31604c91&apos;), date: new Date(1361988839380) }) in collection trello.collection_1 on shard rs2&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;Dec 22 13:55:00 admin1 mongos.27018[10455]: [mongosMain] connection accepted from 127.0.0.1:45906 #1021778 (4 connections now open)&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;Dec 22 13:55:00 admin1 mongos.27018[10455]: [mongosMain] connection accepted from 127.0.0.1:45907 #1021779 (5 connections now open)&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;Dec 22 13:55:00 admin1 mongos.27018[10455]: [conn1019044] ChunkManager loading chunks for trello.collection_1 sequenceNumber: 7324 based on: 141470|3565||521778afca72fc747e2a31a3&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;Dec 22 13:55:00 admin1 mongos.27018[10455]: [conn1021778] end connection 127.0.0.1:45906 (4 connections now open)&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;Dec 22 13:55:00 admin1 mongos.27018[10455]: [conn1021779] end connection 127.0.0.1:45907 (3 connections now open)&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;Dec 22 13:55:00 admin1 mongos.27018[10455]: [conn1019044] ChunkManager load took 456 ms and found version 141470|3567||521778afca72fc747e2a31a3&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;Dec 22 13:55:01 admin1 mongos.27018[10455]: [conn1019044] splitting chunk [{ idModel: ObjectId(&apos;546251f294b5b390883cffc4&apos;), date: new Date(1444319064779) },{ idModel: ObjectId(&apos;5462555272ca804e14f8d262&apos;), date: new Date(1416054342508) }) in collection trello.collection_1 on shard rs2&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;Dec 22 13:55:02 admin1 mongos.27018[10455]: [conn1019044] ChunkManager loading chunks for trello.collection_1 sequenceNumber: 7325 based on: 141470|3567||521778afca72fc747e2a31a3&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;Dec 22 13:55:02 admin1 mongos.27018[10455]: [conn1019044] ChunkManager load took 455 ms and found version 141470|3569||521778afca72fc747e2a31a3&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;Dec 22 13:55:06 admin1 mongos.27018[10455]: [conn1019044] splitting chunk [{ idModel: ObjectId(&apos;5462771a6d6090d3aab69185&apos;), date: new Date(1417582120683) },{ idModel: ObjectId(&apos;54627aa769c3cd28a24f65fd&apos;), date: new Date(1415740158381) }) in collection trello.collection_1 on shard rs2&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;Dec 22 13:55:07 admin1 mongos.27018[10455]: [conn1019044] ChunkManager loading chunks for trello.collection_1 sequenceNumber: 7326 based on: 141470|3569||521778afca72fc747e2a31a3&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;Dec 22 13:55:07 admin1 mongos.27018[10455]: [conn1019044] ChunkManager load took 451 ms and found version 141470|3571||521778afca72fc747e2a31a3&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;Dec 22 13:55:10 admin1 mongos.27018[10455]: [mongosMain] connection accepted from 127.0.0.1:45915 #1021780 (4 connections now open)&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;Dec 22 13:55:10 admin1 mongos.27018[10455]: [mongosMain] connection accepted from 127.0.0.1:45916 #1021781 (5 connections now open)&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;Dec 22 13:55:10 admin1 mongos.27018[10455]: [conn1021780] end connection 127.0.0.1:45915 (4 connections now open)&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;Dec 22 13:55:10 admin1 mongos.27018[10455]: [conn1021781] end connection 127.0.0.1:45916 (3 connections now open)&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;Dec 22 13:55:10 admin1 mongos.27018[10455]: [conn1019044] splitting chunk [{ idModel: ObjectId(&apos;5462a50a66b3264817ddd377&apos;), date: new Date(1389628810403) },{ idModel: ObjectId(&apos;5462ad9dba3d75d3ece4ca07&apos;), date: new Date(1416019961869) }) in collection trello.collection_1 on shard rs40&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;Dec 22 13:55:11 admin1 mongos.27018[10455]: [conn1019044] ChunkManager loading chunks for trello.collection_1 sequenceNumber: 7327 based on: 141470|3571||521778afca72fc747e2a31a3&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;Dec 22 13:55:11 admin1 mongos.27018[10455]: [conn1019044] ChunkManager load took 452 ms and found version 141470|3573||521778afca72fc747e2a31a3&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>Ubuntu 14.04</environment>
        <key id="476214">SERVER-32459</key>
            <summary>mongos incorrectly assumed collection was unsharded</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="2" iconUrl="https://jira.mongodb.org/images/icons/priorities/critical.svg">Critical - P2</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="randolph@mongodb.com">Randolph Tan</assignee>
                                    <reporter username="sven@trello.com">Sven Henderson</reporter>
                        <labels>
                    </labels>
                <created>Tue, 26 Dec 2017 17:46:04 +0000</created>
                <updated>Wed, 11 Jan 2023 19:39:35 +0000</updated>
                            <resolved>Mon, 22 Jan 2018 15:58:32 +0000</resolved>
                                    <version>3.2.17</version>
                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>13</watches>
                                                                                                                <comments>
                            <comment id="1780738" author="renctan" created="Mon, 22 Jan 2018 15:57:32 +0000"  >&lt;p&gt;After looking at the primary shard logs again, I believe you are experiencing &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32198&quot; title=&quot;Missing collection metadata on the shard implies both UNSHARDED and &amp;quot;metadata not loaded yet&amp;quot;&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32198&quot;&gt;&lt;del&gt;SERVER-32198&lt;/del&gt;&lt;/a&gt;. The logs shows that the shard thinks that the collection is &apos;unsharded&apos;. This is because it currently does not differentiate between uninitialized/unknown version and zero version. In addition, this shard doesn&apos;t own any chunks for this collection, so no other request would send a non-zero version request to this shard and force it to refresh. The &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-22611&quot; title=&quot;ChunkManager refresh can occasionally cause a full reload&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-22611&quot;&gt;&lt;del&gt;SERVER-22611&lt;/del&gt;&lt;/a&gt; fix in v3.4 should make this issue harder to manifest until we fully fix &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32198&quot; title=&quot;Missing collection metadata on the shard implies both UNSHARDED and &amp;quot;metadata not loaded yet&amp;quot;&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32198&quot;&gt;&lt;del&gt;SERVER-32198&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="1776718" author="sven@trello.com" created="Wed, 17 Jan 2018 17:06:41 +0000"  >&lt;p&gt;Hi Randolph,&lt;/p&gt;

&lt;p&gt;We did not issue any queries through the mongos that assumed the collection was unsharded so I cannot completely confirm what it was doing. &lt;/p&gt;

&lt;p&gt;However, from the point of view of a working mongos process the data that was being inserted into the unsharded collection on the primary RS (presumably by the confused mongos) was not visible. Those ~20k documents were &quot;missing&quot; from the collection. To recover those lost documents we ran flushRouterConfig on the confused mongos (this stopped docs from being inserted), dumped the 20k docs directly from the mongod instance in the primary RS, and then restored those docs back into a working mongos.&lt;/p&gt;</comment>
                            <comment id="1776678" author="renctan" created="Wed, 17 Jan 2018 16:46:07 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;May I ask whether you saw inconsistencies or was just suspecting that there might be inconsistencies? The reason why I&apos;m asking is because the &quot;inconsistent chunk&quot; logs just means that either the config server metadata was somewhat corrupted or the mongos screwed up. If it&apos;s the former, you will keep on hitting this error indefinitely. If it&apos;s the latter, mongos will simply clear the cache and reload again. The latter will not cause any data loss/inconsistency but it can cause queries to be delayed because it will need to load the full metadata for that collection again instead of doing it incrementally. We fixed an issue (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-22611&quot; title=&quot;ChunkManager refresh can occasionally cause a full reload&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-22611&quot;&gt;&lt;del&gt;SERVER-22611&lt;/del&gt;&lt;/a&gt;) that can cause mongos to have &quot;inconsistent chunk&quot; in v3.4.&lt;/p&gt;</comment>
                            <comment id="1776578" author="sven@trello.com" created="Wed, 17 Jan 2018 15:48:37 +0000"  >&lt;p&gt;Hi Randolph,&lt;/p&gt;

&lt;p&gt;Almost all of our queries use the default read/write concern and read preference with a very small number reading only from the secondaries. For the collection in question, I can really only confirm that in the hour that it was assumed to be unsharded, mongos inserted ~20k docs into the collection on the primary RS.&lt;/p&gt;</comment>
                            <comment id="1764131" author="renctan" created="Wed, 3 Jan 2018 18:14:34 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;What kind of reads and writes are you using? Most of the reads and writes are versioned, so even if the mongos was wrong, the shard will return a stale version error and cause the mongos to refresh the routing table (unless the shard just restarted or just became primary recently - &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24960&quot; title=&quot;Shard may not realize that collection is already sharded after restart&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24960&quot;&gt;&lt;del&gt;SERVER-24960&lt;/del&gt;&lt;/a&gt;). Some exceptions to this behavior are updates/removes with multi = true and secondary ok reads. v3.6 introduced safe secondary reads which makes reading from a secondary properly versioned.&lt;/p&gt;</comment>
                            <comment id="1759712" author="sven@trello.com" created="Tue, 26 Dec 2017 21:05:48 +0000"  >&lt;p&gt;Hi Kelsey,&lt;/p&gt;

&lt;p&gt;Your quick response is much appreciated. To answer your questions...&lt;/p&gt;

&lt;ol&gt;
	&lt;li&gt;We are using mirrored (SCCC) config servers&lt;/li&gt;
	&lt;li&gt;I uploaded the logs for each service for the day affected&lt;/li&gt;
	&lt;li&gt;I uploaded the compressed config database dump&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;Let me know if I can provide any additional information.&lt;/p&gt;

&lt;p&gt;Sven&lt;/p&gt;</comment>
                            <comment id="1759684" author="thomas.schubert" created="Tue, 26 Dec 2017 19:58:55 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=sven%40trello.com&quot; class=&quot;user-hover&quot; rel=&quot;sven@trello.com&quot;&gt;sven@trello.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for reporting this issue. So we can better understand what occurred, would you please provide some additional information?&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Are you running with config servers as a replica set or with mirrored (SCCC) config servers?&lt;/li&gt;
	&lt;li&gt;Would you please provide the complete logs from the following processes?
	&lt;ol&gt;
		&lt;li&gt;the primary or first config server&lt;/li&gt;
		&lt;li&gt;affected mongos&lt;/li&gt;
		&lt;li&gt;mongos running the the the split commands&lt;/li&gt;
		&lt;li&gt;the primary of the primary replicaset that began receiving writes/reads from the affected mongos&lt;/li&gt;
	&lt;/ol&gt;
	&lt;/li&gt;
	&lt;li&gt;Would you please provide a mongodump of the config database?
&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;mongodump --host MONGOS_HOST --port MONGOS_PORT -d config -o configdump&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;tar czf configdump.tgz configdump&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;/li&gt;
&lt;/ol&gt;


&lt;p&gt;I&apos;ve created a secure &lt;a href=&quot;https://10gen-httpsupload.s3.amazonaws.com/upload_forms/28ad9dba-3fd9-46d6-80f4-a4da13d37cc0.html&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;upload portal&lt;/a&gt; for you to use to provide these files. Files uploaded to this portal are only visible to MongoDB employees investigating this issue and are routinely deleted after some time.&lt;/p&gt;

&lt;p&gt;Thank you again,&lt;br/&gt;
Kelsey&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
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