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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-44299] Add tests for hashed shard key</title>
                <link>https://jira.mongodb.org/browse/SERVER-44299</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;ul&gt;
	&lt;li&gt;insert gets targeted to right shard&lt;/li&gt;
	&lt;li&gt;update gets targeted to right shard&lt;/li&gt;
	&lt;li&gt;delete gets targeted to right shard&lt;/li&gt;
	&lt;li&gt;insert gets targeted to right shard during migration&lt;/li&gt;
	&lt;li&gt;update gets targeted to right shard during migration&lt;/li&gt;
	&lt;li&gt;delete gets targeted to right shard during migration&lt;/li&gt;
	&lt;li&gt;insert gets targeted to right shard during migration (2PC)&lt;/li&gt;
	&lt;li&gt;update gets targeted to right shard during migration (2PC)&lt;/li&gt;
	&lt;li&gt;delete gets targeted to right shard during migration (2PC)&lt;/li&gt;
	&lt;li&gt;findAndModify gets targeted to right shard&lt;/li&gt;
	&lt;li&gt;find gets targeted to right shard&lt;/li&gt;
	&lt;li&gt;find with readConcern snapshot that will be targeted differently in the current snapshot gets correctly targeted&lt;/li&gt;
	&lt;li&gt;_getNextSessionMods correctly filters out unrelated documents during migration&lt;/li&gt;
	&lt;li&gt;right documents get moved in moveChunk&lt;/li&gt;
	&lt;li&gt;right documents get deleted by rangeDeleter&lt;/li&gt;
	&lt;li&gt;ShardFilterStage works correctly&lt;/li&gt;
	&lt;li&gt;$merge sends results to the right shard (&lt;a href=&quot;https://github.com/mongodb/mongo/blob/r4.3.0/jstests/sharding/merge_hashed_shard_key.js&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;existing test&lt;/a&gt; doesn&apos;t really check proper targetting)&lt;/li&gt;
	&lt;li&gt;Can merge chunks&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Note: most existing tests kind of indirectly test these via passthrough or aggregated testing (like checking count of documents, instead of targetted tests)&lt;/p&gt;</description>
                <environment></environment>
        <key id="982834">SERVER-44299</key>
            <summary>Add tests for hashed shard key</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="cheahuychou.mao@mongodb.com">Cheahuychou Mao</assignee>
                                    <reporter username="randolph@mongodb.com">Randolph Tan</reporter>
                        <labels>
                    </labels>
                <created>Tue, 29 Oct 2019 18:12:42 +0000</created>
                <updated>Sun, 29 Oct 2023 22:15:37 +0000</updated>
                            <resolved>Wed, 13 Nov 2019 16:16:25 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                    <issuelinks>
                            <issuelinktype id="10620">
                    <name>Issue split</name>
                                            <outwardlinks description="split to">
                                        <issuelink>
            <issuekey id="989482">SERVER-44411</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="989485">SERVER-44412</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="989496">SERVER-44413</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="995459">SERVER-44535</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="995460">SERVER-44536</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="996766">SERVER-44552</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="997043">SERVER-44561</issuekey>
        </issuelink>
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                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="969385">SERVER-44003</issuekey>
        </issuelink>
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