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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-8817] Balancer can interfere when creating a new hashed sharded collection with numInitialChunks</title>
                <link>https://jira.mongodb.org/browse/SERVER-8817</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Initial splits can fail when the balancer happen to moveChunks while the shardCollection method tries to do the initial splits.&lt;/p&gt;</description>
                <environment></environment>
        <key id="67018">SERVER-8817</key>
            <summary>Balancer can interfere when creating a new hashed sharded collection with numInitialChunks</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="backlog-server-sharding">[DO NOT USE] Backlog - Sharding Team</assignee>
                                    <reporter username="randolph@mongodb.com">Randolph Tan</reporter>
                        <labels>
                    </labels>
                <created>Fri, 1 Mar 2013 19:25:37 +0000</created>
                <updated>Tue, 6 Dec 2022 05:23:44 +0000</updated>
                            <resolved>Wed, 18 Jul 2018 23:33:01 +0000</resolved>
                                    <version>2.4.0-rc1</version>
                                                    <component>Sharding</component>
                                        <votes>3</votes>
                                    <watches>12</watches>
                                                                                                                <comments>
                            <comment id="1950727" author="kaloian.manassiev" created="Wed, 18 Jul 2018 23:31:50 +0000"  >&lt;p&gt;Starting with version 3.2 and the fix for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-19297&quot; title=&quot;shardCollection should take distributed lock on collection being sharded&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-19297&quot;&gt;&lt;del&gt;SERVER-19297&lt;/del&gt;&lt;/a&gt; this issue no longer exists, because shardCollection acquires the collection distributed lock, which means the balancer cannot move chunks for it.&lt;/p&gt;</comment>
                            <comment id="1947021" author="schwerin" created="Fri, 13 Jul 2018 18:19:40 +0000"  >&lt;p&gt;Sharding team to evaluate if this is still a bug in current releases and re-triage.&lt;/p&gt;</comment>
                            <comment id="641110" author="asya" created="Tue, 1 Jul 2014 21:08:35 +0000"  >&lt;p&gt;I have a presplitting script which specifically refused to run if the balancer is not disabled - I think that&apos;s a prudent thing to do whenever there are multiple steps involved that should be executed without another processes affecting state.&lt;/p&gt;</comment>
                            <comment id="515343" author="tdondich" created="Thu, 13 Mar 2014 16:59:29 +0000"  >&lt;p&gt;We need this resolved.  Adding collections with numInitialChunks in our workflow is a constant task.  Having to disable the balancer while this happens is an extra step that is hacky at best.  If it is accidentally left on, bad bad bad things happen (moveChunk migrations continue to show up in aborted state for other collections and can&apos;t be resolved).&lt;/p&gt;</comment>
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