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    <title>MongoDB Jira</title>
    <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>[GODRIVER-1558] Investigate $merge test failures</title>
                <link>https://jira.mongodb.org/browse/GODRIVER-1558</link>
                <project id="14289" key="GODRIVER">Go Driver</project>
                    <description>&lt;p&gt;Our waterfall shows various failures relating to aggregates with $merge stages. Thoughts on what could be causing them:&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Documents/failpoints aren&apos;t being written with a high enough writeconcern.&lt;/li&gt;
	&lt;li&gt;Documents aren&apos;t being read with a high enough read concern.&lt;/li&gt;
	&lt;li&gt;Data from previous tests isn&apos;t being cleaned up and is conflicting with these tests.&lt;/li&gt;
&lt;/ol&gt;
</description>
                <environment></environment>
        <key id="1306131">GODRIVER-1558</key>
            <summary>Investigate $merge test failures</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="divjot.arora@mongodb.com">Divjot Arora</assignee>
                                    <reporter username="divjot.arora@mongodb.com">Divjot Arora</reporter>
                        <labels>
                    </labels>
                <created>Mon, 6 Apr 2020 20:36:42 +0000</created>
                <updated>Sat, 28 Oct 2023 11:38:15 +0000</updated>
                            <resolved>Wed, 22 Apr 2020 20:57:14 +0000</resolved>
                                                    <fixVersion>1.4.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3045513" author="xgen-internal-githook" created="Fri, 17 Apr 2020 20:14:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Divjot Arora&apos;, &apos;email&apos;: &apos;divjot.arora@10gen.com&apos;, &apos;username&apos;: &apos;divjotarora&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/GODRIVER-1558&quot; title=&quot;Investigate $merge test failures&quot; class=&quot;issue-link&quot; data-issue-key=&quot;GODRIVER-1558&quot;&gt;&lt;del&gt;GODRIVER-1558&lt;/del&gt;&lt;/a&gt; Sort on _id when verifying collections in tests (#375)&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/commit/3d1b780844d6fcf2788176b1578787a00ece9718&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/commit/3d1b780844d6fcf2788176b1578787a00ece9718&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3045373" author="divjot.arora" created="Fri, 17 Apr 2020 19:14:33 +0000"  >&lt;p&gt;Additional logging shows that the tests are sometimes failing because the &lt;tt&gt;find&lt;/tt&gt; on the outcome collection returns results in a different order than expected by the spec test. PR&#160;&lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/pull/375&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/pull/375&lt;/a&gt;&#160;changes the &lt;tt&gt;find&lt;/tt&gt; to sort on &lt;tt&gt;_id&lt;/tt&gt; to ensure that the documents are in the same order. After that PR is merged, I&apos;m going to leave this ticket open for a bit and monitor the waterfall to see if we find any other issues that could be related.&lt;/p&gt;</comment>
                            <comment id="3043439" author="xgen-internal-githook" created="Thu, 16 Apr 2020 21:37:35 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Divjot Arora&apos;, &apos;email&apos;: &apos;divjot.arora@10gen.com&apos;, &apos;username&apos;: &apos;divjotarora&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/GODRIVER-1558&quot; title=&quot;Investigate $merge test failures&quot; class=&quot;issue-link&quot; data-issue-key=&quot;GODRIVER-1558&quot;&gt;&lt;del&gt;GODRIVER-1558&lt;/del&gt;&lt;/a&gt; Ensure topology kind is always discovered for integration tests (#373)&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/commit/891a5fc9374a3e31b8fc9e7117bb690d640edff6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/commit/891a5fc9374a3e31b8fc9e7117bb690d640edff6&lt;/a&gt;&lt;/p&gt;</comment>
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