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    <title>MongoDB Jira</title>
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    <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-9909] Balancer round aborted with idle sharded collection</title>
                <link>https://jira.mongodb.org/browse/SERVER-9909</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In order to guarantee fair balancing, the balancer tries to move one-chunk-per-collection-per-round.  However, if when the balancer tries to load information on a newly-sharded collection it doesn&apos;t know about, an exception is thrown that aborts the round (Balancer::_moveChunks() calls getChunkManager(), which throws).  &lt;/p&gt;

&lt;p&gt;Solution is to use getChunkManagerIfExists(), which does not throw, and pass in reload=true to make the Balancer load the ChunkManager even if the collection is idle.&lt;/p&gt;</description>
                <environment></environment>
        <key id="78760">SERVER-9909</key>
            <summary>Balancer round aborted with idle sharded collection</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="greg_10gen">Greg Studer</assignee>
                                    <reporter username="greg_10gen">Greg Studer</reporter>
                        <labels>
                    </labels>
                <created>Wed, 12 Jun 2013 15:16:54 +0000</created>
                <updated>Mon, 11 Jul 2016 17:39:32 +0000</updated>
                            <resolved>Thu, 13 Jun 2013 16:23:13 +0000</resolved>
                                    <version>2.5.0</version>
                                    <fixVersion>2.4.5</fixVersion>
                    <fixVersion>2.5.1</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="363800" author="auto" created="Wed, 19 Jun 2013 23:50:03 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;gregstuder&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9909&quot; title=&quot;Balancer round aborted with idle sharded collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-9909&quot;&gt;&lt;del&gt;SERVER-9909&lt;/del&gt;&lt;/a&gt; balancer reload idle sharded coll data, and don&apos;t abort round&lt;/p&gt;

&lt;p&gt;Conflicts:&lt;/p&gt;

&lt;p&gt;	src/mongo/s/grid.cpp&lt;br/&gt;
Branch: v2.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/42980b6c626bcf130cc72bc441285fd8bb0f17f3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/42980b6c626bcf130cc72bc441285fd8bb0f17f3&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="359553" author="auto" created="Thu, 13 Jun 2013 16:10:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;gregstuder&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9909&quot; title=&quot;Balancer round aborted with idle sharded collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-9909&quot;&gt;&lt;del&gt;SERVER-9909&lt;/del&gt;&lt;/a&gt; balancer reload idle sharded coll data, and don&apos;t abort round&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/01e4e857be20365b72867458b1a7f48fd8b1c689&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/01e4e857be20365b72867458b1a7f48fd8b1c689&lt;/a&gt;&lt;/p&gt;</comment>
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