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    <link>https://jira.mongodb.org</link>
    <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-56418] Make ReshardingDonorService renaming robust on failover</title>
                <link>https://jira.mongodb.org/browse/SERVER-56418</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If the following events were to occur, resharding would incorrectly fail&lt;br/&gt;
 (1) Suppose the donor is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/e8d2fb3aa49dcb2f9faf70da68fce1b773275e71/src/mongo/db/s/resharding/resharding_donor_service.cpp#L589&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;a recipient as well as donor&lt;/a&gt; and in kBlockingWrites&lt;br/&gt;
 (2) The donor &lt;a href=&quot;https://github.com/mongodb/mongo/blob/e8d2fb3aa49dcb2f9faf70da68fce1b773275e71/src/mongo/db/s/resharding/resharding_donor_service.cpp#L594&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;renames the collection&lt;/a&gt; - no more temporaryNss collection&lt;br/&gt;
 (3) Before it can persist its decision to kDone, a failover occurs&lt;br/&gt;
(4) Donor steps up, still in kBlockingWrites&lt;br/&gt;
 (5) The donor tries to rename the temporary collection again. it fails with NamespaceNotFound since the temporaryNss was already renamed before the failover.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1693529">SERVER-56418</key>
            <summary>Make ReshardingDonorService renaming robust on failover</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="max.hirschhorn@mongodb.com">Max Hirschhorn</assignee>
                                    <reporter username="haley.connelly@mongodb.com">Haley Connelly</reporter>
                        <labels>
                    </labels>
                <created>Tue, 27 Apr 2021 22:21:51 +0000</created>
                <updated>Sun, 29 Oct 2023 21:54:24 +0000</updated>
                            <resolved>Thu, 13 May 2021 02:12:46 +0000</resolved>
                                                    <fixVersion>5.0.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3770719" author="xgen-internal-githook" created="Wed, 12 May 2021 23:20:45 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Max Hirschhorn&apos;, &apos;email&apos;: &apos;max.hirschhorn@mongodb.com&apos;, &apos;username&apos;: &apos;visemet&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56418&quot; title=&quot;Make ReshardingDonorService renaming robust on failover&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56418&quot;&gt;&lt;del&gt;SERVER-56418&lt;/del&gt;&lt;/a&gt; Re-add isAlsoRecipient ReshardingDonorService test cases.&lt;/p&gt;

&lt;p&gt;This reverts commit 7f88224e8248ad30bcbe86a81a46a193b081db9c.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/68c7a019b3aef351a25499a6bdfb812e27f946cc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/68c7a019b3aef351a25499a6bdfb812e27f946cc&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3770110" author="xgen-internal-githook" created="Wed, 12 May 2021 19:04:36 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Max Hirschhorn&apos;, &apos;email&apos;: &apos;max.hirschhorn@mongodb.com&apos;, &apos;username&apos;: &apos;visemet&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56418&quot; title=&quot;Make ReshardingDonorService renaming robust on failover&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56418&quot;&gt;&lt;del&gt;SERVER-56418&lt;/del&gt;&lt;/a&gt; Reset reached state on begin PauseDuringStateTransitions.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/add1a7ef0ae1146f4ebd04b6bc0a0db30093726f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/add1a7ef0ae1146f4ebd04b6bc0a0db30093726f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3767169" author="xgen-internal-githook" created="Tue, 11 May 2021 17:21:06 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Max Hirschhorn&apos;, &apos;email&apos;: &apos;max.hirschhorn@mongodb.com&apos;, &apos;username&apos;: &apos;visemet&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56418&quot; title=&quot;Make ReshardingDonorService renaming robust on failover&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56418&quot;&gt;&lt;del&gt;SERVER-56418&lt;/del&gt;&lt;/a&gt; Revert resharding_donor_service_test.cpp test changes.&lt;/p&gt;

&lt;p&gt;This reverts the resharding_donor_service_test.cpp changes from commit&lt;br/&gt;
bdc6725265d3fdcaf5984ced835cb53c3b3946f8.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7f88224e8248ad30bcbe86a81a46a193b081db9c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7f88224e8248ad30bcbe86a81a46a193b081db9c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3765117" author="xgen-internal-githook" created="Mon, 10 May 2021 21:35:23 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Max Hirschhorn&apos;, &apos;email&apos;: &apos;max.hirschhorn@mongodb.com&apos;, &apos;username&apos;: &apos;visemet&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56418&quot; title=&quot;Make ReshardingDonorService renaming robust on failover&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56418&quot;&gt;&lt;del&gt;SERVER-56418&lt;/del&gt;&lt;/a&gt; Avoid error in donor if temp collection already renamed.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bdc6725265d3fdcaf5984ced835cb53c3b3946f8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bdc6725265d3fdcaf5984ced835cb53c3b3946f8&lt;/a&gt;&lt;/p&gt;</comment>
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