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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>
    </build-info>


<item>
            <title>[JAVA-4711] IllegalStateException when trying to create an existing collection</title>
                <link>https://jira.mongodb.org/browse/JAVA-4711</link>
                <project id="10006" key="JAVA">Java Driver</project>
                    <description>&lt;h4&gt;&lt;a name=&quot;Summary&quot;&gt;&lt;/a&gt;Summary&lt;/h4&gt;

&lt;p&gt;Hello everyone,&lt;/p&gt;

&lt;p&gt;When attempting to create a new collection when it already exists, an IllegalStateException is thrown, in addition to the usual MongoCommandException.&lt;/p&gt;

&lt;p&gt;This is a bug since the sync driver only throws the MongoCommandException, and this problem appears with the reactive streams driver since version 4.7.0 only.&lt;/p&gt;

&lt;h4&gt;&lt;a name=&quot;HowtoReproduce&quot;&gt;&lt;/a&gt;How to Reproduce&lt;/h4&gt;

&lt;p&gt;&#160;&lt;/p&gt;
&lt;p/&gt;
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&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;
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					&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;MongoClient mongoClient = MongoClients.create();&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;MongoDatabase exampleDatabase = mongoClient.getDatabase(&lt;/span&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&quot;foo&quot;&lt;/span&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;);&lt;/span&gt;&lt;/pre&gt;
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				&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;&amp;nbsp;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
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						&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;SubscriberHelpers.ObservableSubscriber&amp;lt;Void&amp;gt; voidSubscriber = &lt;/span&gt;&lt;span style=&quot;color: #006699; font-weight: bold; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;new&lt;/span&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; SubscriberHelpers.OperationSubscriber&amp;lt;&amp;gt;();&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;exampleDatabase.createCollection(&lt;/span&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&quot;bar&quot;&lt;/span&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;).subscribe(voidSubscriber);&lt;/span&gt;&lt;/pre&gt;
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				&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;voidSubscriber.await(); &lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;
&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;If the collection already exists, you should see this stack trace: &lt;a href=&quot;https://gist.github.com/Romitou/f552416d07f9608e2ddbecfa5c03e309&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://gist.github.com/Romitou/f552416d07f9608e2ddbecfa5c03e309&lt;/a&gt;&lt;/p&gt;
&lt;h4&gt;&lt;a name=&quot;AdditionalBackground&quot;&gt;&lt;/a&gt;Additional Background&lt;/h4&gt;

&lt;p&gt;As said before, this bug only appears from version 4.7.0 and only on the reactive streams driver, I think this is relevant information.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2119482">JAVA-4711</key>
            <summary>IllegalStateException when trying to create an existing collection</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="jeff.yemin@mongodb.com">Jeffrey Yemin</assignee>
                                    <reporter username="contact@romitou.fr">Romain N/A</reporter>
                        <labels>
                            <label>regression</label>
                    </labels>
                <created>Mon, 22 Aug 2022 21:23:34 +0000</created>
                <updated>Sat, 28 Oct 2023 11:20:37 +0000</updated>
                            <resolved>Wed, 24 Aug 2022 13:45:00 +0000</resolved>
                                    <version>4.7.0</version>
                                    <fixVersion>4.7.2</fixVersion>
                                    <component>Reactive Streams</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4773551" author="xgen-internal-githook" created="Wed, 24 Aug 2022 13:44:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jeff Yemin&apos;, &apos;email&apos;: &apos;jeff.yemin@mongodb.com&apos;, &apos;username&apos;: &apos;jyemin&apos;}
&lt;p&gt;Message: Fix double connection release on error for drop and create collection operations (#993)&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-4711&quot; title=&quot;IllegalStateException when trying to create an existing collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-4711&quot;&gt;&lt;del&gt;JAVA-4711&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: 4.7.x&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/commit/eb22d740979717ad3d78139378db2c49f2341aee&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/commit/eb22d740979717ad3d78139378db2c49f2341aee&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4770192" author="jeff.yemin" created="Tue, 23 Aug 2022 13:48:09 +0000"  >&lt;p&gt;Most likely introduced by this commit: &lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/commit/11484607b8d5f3888f4335f939e02ceb58952eae&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/commit/11484607b8d5f3888f4335f939e02ceb58952eae&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4770151" author="jeff.yemin" created="Tue, 23 Aug 2022 13:37:44 +0000"  >&lt;p&gt;Thanks for the report.  I was able to reproduce it.  It appears that the correct exception is still returned to the caller, but the IllegalStateException is thrown synchronously and logged.  It appears to be functionally harmless, but will double-check that.  Regardless, it should be fixed as it makes for confusing log messages.&lt;/p&gt;</comment>
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