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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
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    <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-26524] check if addShardHandle present in ShardingCatalogManagerImpl::_handleAddShardTaskResponse before continuing</title>
                <link>https://jira.mongodb.org/browse/SERVER-26524</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If removeShard() is called for the shardId, the CallbackHandle for the task to upsert the shardIdentity on the new shard is canceled, and the CallbackHandle for that task is untracked:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.4.0-rc0/src/mongo/s/catalog/sharding_catalog_manager_impl.cpp#L1683-L1693&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/r3.4.0-rc0/src/mongo/s/catalog/sharding_catalog_manager_impl.cpp#L1683-L1693&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Since canceling the task can occur &lt;b&gt;after&lt;/b&gt; the task has already completed, but &lt;b&gt;before&lt;/b&gt; the task&apos;s callback has run, it&apos;s possible for the task to have been canceled but &lt;b&gt;not&lt;/b&gt; receive the CallbackCanceled status, which currently is checked for in the callback:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.4.0-rc0/src/mongo/s/catalog/sharding_catalog_manager_impl.cpp#L1771-L1774&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/r3.4.0-rc0/src/mongo/s/catalog/sharding_catalog_manager_impl.cpp#L1771-L1774&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;In this case, we don&apos;t return early, and end up trying to untrack the handle again, which hits an invariant (BF-3721).&lt;/p&gt;

&lt;p&gt;To fix this, we should also return early if the handle is no longer tracked (signifying the shard has been removed).&lt;/p&gt;</description>
                <environment></environment>
        <key id="322126">SERVER-26524</key>
            <summary>check if addShardHandle present in ShardingCatalogManagerImpl::_handleAddShardTaskResponse before continuing</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="esha.maharishi@mongodb.com">Esha Maharishi</assignee>
                                    <reporter username="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                    </labels>
                <created>Fri, 7 Oct 2016 19:30:32 +0000</created>
                <updated>Sat, 19 Nov 2016 00:05:31 +0000</updated>
                            <resolved>Fri, 7 Oct 2016 20:33:20 +0000</resolved>
                                    <version>3.4.0-rc0</version>
                                    <fixVersion>3.4.0-rc1</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1403356" author="xgen-internal-githook" created="Fri, 7 Oct 2016 20:33:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;name&apos;: u&apos;Esha Maharishi&apos;, u&apos;email&apos;: u&apos;esha.maharishi@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-26524&quot; title=&quot;check if addShardHandle present in ShardingCatalogManagerImpl::_handleAddShardTaskResponse before continuing&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-26524&quot;&gt;&lt;del&gt;SERVER-26524&lt;/del&gt;&lt;/a&gt; check if addShardHandle present in ShardingCatalogManagerImpl::_handleAddShardTaskResponse before continuing&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bb32a18fd09039d246ea8b67073697231ec0e409&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bb32a18fd09039d246ea8b67073697231ec0e409&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="322138">SERVER-26526</issuekey>
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