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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>[CSHARP-3535] Regression in support for $out to S3</title>
                <link>https://jira.mongodb.org/browse/CSHARP-3535</link>
                <project id="10041" key="CSHARP">C# Driver</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-2746&quot; title=&quot;Ensure support for $out to S3&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-2746&quot;&gt;&lt;del&gt;CSHARP-2746&lt;/del&gt;&lt;/a&gt; added the&#160;&lt;tt&gt;AggregateToCollection&lt;/tt&gt;&#160;methods that would &quot;remove any assumptions about the contents of a $out (or $merge) stage&quot;, in order to support an aggregation that outputs to a S3 bucket.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-3024&quot; title=&quot;Support $out to a different database&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-3024&quot;&gt;&lt;del&gt;CSHARP-3024&lt;/del&gt;&lt;/a&gt; appears to have then added a requirement that if an &lt;tt&gt;$out&lt;/tt&gt; stage has a BsonDocument as an argument it must contain the &lt;tt&gt;db&lt;/tt&gt; and &lt;tt&gt;coll&lt;/tt&gt; parameters, which goes against &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-2746&quot; title=&quot;Ensure support for $out to S3&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-2746&quot;&gt;&lt;del&gt;CSHARP-2746&lt;/del&gt;&lt;/a&gt; and prevents running an aggregation with an $out stage to a S3 bucket.&lt;/p&gt;

&lt;p&gt;Attempting to run one will produce the following error:&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;Error is: Element &apos;db&apos; not found.&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;Stack trace:&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;   at MongoDB.Bson.BsonDocument.get_Item(String name)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;   at MongoDB.Driver.Core.Operations.AggregateToCollectionOperation.SimplifyOutStageIfOutputDatabaseIsSameAsInputDatabase(IReadOnlyList`1 pipeline)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;   at MongoDB.Driver.Core.Operations.AggregateToCollectionOperation..ctor(DatabaseNamespace databaseNamespace, IEnumerable`1 pipeline, MessageEncoderSettings messageEncoderSettings)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;   at MongoDB.Driver.Core.Operations.AggregateToCollectionOperation..ctor(CollectionNamespace collectionNamespace, IEnumerable`1 pipeline, MessageEncoderSettings messageEncoderSettings)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;   at MongoDB.Driver.MongoCollectionImpl`1.CreateAggregateToCollectionOperation[TResult](RenderedPipelineDefinition`1 renderedPipeline, AggregateOptions options)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;   at MongoDB.Driver.MongoCollectionImpl`1.Aggregate[TResult](IClientSessionHandle session, PipelineDefinition`2 pipeline, AggregateOptions options, CancellationToken cancellationToken)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;   at MongoDB.Driver.MongoCollectionImpl`1.&amp;lt;&amp;gt;c__DisplayClass19_0`1.&amp;lt;Aggregate&amp;gt;b__0(IClientSessionHandle session)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;   at MongoDB.Driver.MongoCollectionImpl`1.UsingImplicitSession[TResult](Func`2 func, CancellationToken cancellationToken)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;   at MongoDB.Driver.MongoCollectionImpl`1.Aggregate[TResult](PipelineDefinition`2 pipeline, AggregateOptions options, CancellationToken cancellationToken)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;It seems that &lt;tt&gt;SimplifyOutStageIfOutputDatabaseIsSameAsInputDatabase&lt;/tt&gt; should only do work if the $out stage is a BsonDocument that contains both &lt;tt&gt;db&lt;/tt&gt; and &lt;tt&gt;coll&lt;/tt&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1672547">CSHARP-3535</key>
            <summary>Regression in support for $out to S3</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="13201">Fixed</resolution>
                                        <assignee username="robert@mongodb.com">Robert Stam</assignee>
                                    <reporter username="john.murphy@mongodb.com">John Murphy</reporter>
                        <labels>
                    </labels>
                <created>Wed, 7 Apr 2021 04:47:01 +0000</created>
                <updated>Sat, 28 Oct 2023 11:47:49 +0000</updated>
                            <resolved>Thu, 8 Apr 2021 15:07:48 +0000</resolved>
                                                    <fixVersion>2.12.3</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3707911" author="xgen-internal-githook" created="Thu, 8 Apr 2021 15:06:55 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;rstam&apos;, &apos;email&apos;: &apos;robert@robertstam.org&apos;, &apos;username&apos;: &apos;rstam&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-3535&quot; title=&quot;Regression in support for $out to S3&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-3535&quot;&gt;&lt;del&gt;CSHARP-3535&lt;/del&gt;&lt;/a&gt;: Regression in support for $out to S3&lt;br/&gt;
Branch: v2.12.x&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/commit/1fe8deaf5fd923166e97c3c1f4ee074879338826&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/commit/1fe8deaf5fd923166e97c3c1f4ee074879338826&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3707899" author="xgen-internal-githook" created="Thu, 8 Apr 2021 15:04:03 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;rstam&apos;, &apos;email&apos;: &apos;robert@robertstam.org&apos;, &apos;username&apos;: &apos;rstam&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-3535&quot; title=&quot;Regression in support for $out to S3&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-3535&quot;&gt;&lt;del&gt;CSHARP-3535&lt;/del&gt;&lt;/a&gt;: Regression in support for $out to S3&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/commit/bb5b38d7407b37453ce1aac82e8a67f5526b2f86&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/commit/bb5b38d7407b37453ce1aac82e8a67f5526b2f86&lt;/a&gt;&lt;/p&gt;</comment>
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