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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-54683] Running shard with standalone Mongod and config server with single node replica</title>
                <link>https://jira.mongodb.org/browse/SERVER-54683</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This is how my architecture looks like for testing / bench-marking purpose.&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Config server running with single node replica set (on x86 build)&lt;/li&gt;
	&lt;li&gt;Single mongos&#160;(on x86 build)&lt;/li&gt;
	&lt;li&gt;4 Shards running with standalone mongods (on different build)&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;I&apos;ve imported 10M documents and enabled hashed Sharding. With this 10M total data size reaches up-to ~1.3 GB.&#160; As I&apos;ve applied hashed Sharding, it should balance chunk well and should start migrating the chunks over to the different shards.&#160; But after waiting over longer period of time, it hasn&apos;t migrate single chunk over.&#160;&lt;/p&gt;

&lt;p&gt;When I&apos;ve converted standalone mongods to single node replica set on all of the shards, it started migrating chunks and after some time, it has precisely balanced the chunks across all shards.&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;My question is:&#160;&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;was running standalone mongod on each shard was an issue?&lt;/li&gt;
	&lt;li&gt;Running sharded cluster components in different environments&#160; (mongos and config on one build and mongod in another build) would be causing this issue?&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;Thanks!&lt;br/&gt;
Viraj&lt;/p&gt;</description>
                <environment></environment>
        <key id="1629184">SERVER-54683</key>
            <summary>Running shard with standalone Mongod and config server with single node replica</summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="backlog-server-triage">Backlog - Triage Team</assignee>
                                    <reporter username="virajthakrar@gmail.com">Viraj Thakrar</reporter>
                        <labels>
                    </labels>
                <created>Sun, 21 Feb 2021 08:57:34 +0000</created>
                <updated>Tue, 6 Dec 2022 01:34:11 +0000</updated>
                            <resolved>Mon, 22 Feb 2021 17:57:55 +0000</resolved>
                                    <version>4.9.0-alpha3</version>
                    <version>4.9.0-alpha4</version>
                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="3638912" author="virajthakrar@gmail.com" created="Mon, 1 Mar 2021 05:16:06 +0000"  >&lt;p&gt;Hi Eric,&lt;/p&gt;

&lt;p&gt;Thank you for responding.&#160;&lt;/p&gt;

&lt;p&gt;Yes it is working fine with different builds.&#160;&lt;/p&gt;

&lt;p&gt;Best,&lt;/p&gt;

&lt;p&gt;Viraj&lt;/p&gt;</comment>
                            <comment id="3628182" author="eric.sedor" created="Mon, 22 Feb 2021 17:57:44 +0000"  >&lt;p&gt;Hi Viraj,&lt;/p&gt;

&lt;p&gt;It is true that &lt;a href=&quot;https://docs.mongodb.com/manual/core/sharded-cluster-components/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;shards must be replica sets&lt;/a&gt;. Ideally there would not be an issue with different underlying system builds.&lt;/p&gt;

&lt;p&gt;I&apos;m going to close this ticket but if you run into trouble on a supported configuration, we&apos;d be happy to look deeper.&lt;/p&gt;

&lt;p&gt;Sincerely,&lt;br/&gt;
Eric&lt;/p&gt;</comment>
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