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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-52639] Fail resharding operation if new shard key includes array</title>
                <link>https://jira.mongodb.org/browse/SERVER-52639</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Sharding prevents documents with array values for the shard key pattern from being written (&lt;a href=&quot;https://github.com/mongodb/mongo/blob/dd7cc35422c9be911f646a163c78af7b4d340b11/src/mongo/s/write_ops/chunk_manager_targeter.cpp#L366-L375&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;for inserts&lt;/a&gt;, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2b81759028c92187706c28229572f9e1bbe2933b/src/mongo/db/exec/update_stage.cpp#L338-L351&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;for updates&lt;/a&gt;). We either need a similar restriction for the new shard key while resharding is in-progress, or these inserts/updates must cause the resharding operation to fail.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1534941">SERVER-52639</key>
            <summary>Fail resharding operation if new shard key includes array</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="13201">Fixed</resolution>
                                        <assignee username="alex.taskov@mongodb.com">Alexander Taskov</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                            <label>PM-234-M2.5</label>
                            <label>PM-234-T-data-clone</label>
                            <label>PM-234-T-oplog-apply</label>
                    </labels>
                <created>Thu, 5 Nov 2020 18:17:41 +0000</created>
                <updated>Sun, 29 Oct 2023 22:00:50 +0000</updated>
                            <resolved>Tue, 2 Mar 2021 03:15:26 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3641260" author="xgen-internal-githook" created="Tue, 2 Mar 2021 03:13:37 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Alex Taskov&apos;, &apos;email&apos;: &apos;alex.taskov@mongodb.com&apos;, &apos;username&apos;: &apos;alextaskov&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-52639&quot; title=&quot;Fail resharding operation if new shard key includes array&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-52639&quot;&gt;&lt;del&gt;SERVER-52639&lt;/del&gt;&lt;/a&gt; Fail resharding operation if new shard key includes array&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/33083e137fa08dc48eb5dee666e285dbbb4e28c5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/33083e137fa08dc48eb5dee666e285dbbb4e28c5&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3592880" author="max.hirschhorn@10gen.com" created="Mon, 1 Feb 2021 17:34:42 +0000"  >&lt;p&gt;My thought here would be to call ShardKeyPattern::extractShardKeyFromDoc() for every insert and update to the temporary resharding collection as part of ReshardingOpObserver and to throw &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ef5a7845d8ebb64165d28d08cb579c904541d960/src/mongo/s/shard_key_pattern.cpp#L355-L357&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;if ShardKeyPattern::extractShardKeyFromDoc() returns an empty BSONObj&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The idea is that both the ReshardingCollectionCloner and ReshardingOplogApplier would cause the recipient shard to transition to the kError state as a result of this exception being propagated to the RecipientStateMachine.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10520">
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                                            <outwardlinks description="causes">
                                        <issuelink>
            <issuekey id="1640778">SERVER-54984</issuekey>
        </issuelink>
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                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="1838804">SERVER-59023</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1878935">SERVER-60094</issuekey>
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