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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>[JAVA-4325] Commit Transaction reactive streams question</title>
                <link>https://jira.mongodb.org/browse/JAVA-4325</link>
                <project id="10006" key="JAVA">Java Driver</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/blob/master/driver-reactive-streams/src/main/com/mongodb/reactivestreams/client/internal/ClientSessionPublisherImpl.java#L153&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/blob/master/driver-reactive-streams/src/main/com/mongodb/reactivestreams/client/internal/ClientSessionPublisherImpl.java#L153&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;On this class when calling method commitTransaction it returns a publisher. If client creates a publisher without subscribing to it it returns error. It should not return an error when client is not subscribed to that publisher.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1888557">JAVA-4325</key>
            <summary>Commit Transaction reactive streams question</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="jeff.yemin@mongodb.com">Jeffrey Yemin</assignee>
                                    <reporter username="rron@kodelabs.com">Rron Jahiri</reporter>
                        <labels>
                            <label>external-user</label>
                    </labels>
                <created>Sat, 2 Oct 2021 21:18:38 +0000</created>
                <updated>Wed, 4 May 2022 13:15:53 +0000</updated>
                            <resolved>Thu, 4 Nov 2021 23:37:43 +0000</resolved>
                                                                    <component>Reactive Streams</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4170629" author="jeff.yemin" created="Thu, 4 Nov 2021 23:37:43 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=rron%40kodelabs.com&quot; class=&quot;user-hover&quot; rel=&quot;rron@kodelabs.com&quot;&gt;rron@kodelabs.com&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;As it&apos;s been this way for quite a while, we are not inclined to change it back at this point. If we get more user complaints about it, we will reconsider.&lt;/p&gt;</comment>
                            <comment id="4138468" author="JIRAUSER1262693" created="Thu, 21 Oct 2021 12:49:31 +0000"  >&lt;p&gt;Version  that I was using was 4.1.0&lt;/p&gt;</comment>
                            <comment id="4134833" author="jeff.yemin" created="Wed, 20 Oct 2021 11:51:27 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=rron%40kodelabs.com&quot; class=&quot;user-hover&quot; rel=&quot;rron@kodelabs.com&quot;&gt;rron@kodelabs.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thanks for clarifying.&#160; Can you let us know the last release where it worked as you expected?&lt;/p&gt;</comment>
                            <comment id="4129664" author="JIRAUSER1262693" created="Mon, 18 Oct 2021 15:23:34 +0000"  >&lt;p&gt;Hi ,&#160;&lt;br/&gt;
The issue happens this way :&#160;&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;  &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;public&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; Publisher&amp;lt;Void&amp;gt; mongodbError(ClientSession clientSession) {&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;    Publisher&amp;lt;Void&amp;gt; voidPublisher = clientSession.commitTransaction();  &lt;/span&gt;&lt;span style=&quot;color: #008200; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;//it returns an error &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;    &lt;/span&gt;&lt;span style=&quot;color: #008200; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;//do stuff&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;&amp;nbsp;&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;    &lt;/span&gt;&lt;span style=&quot;color: #008200; 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;
			&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;    clientSession.startTransaction();&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;    &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;return&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; voidPublisher;&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;  }&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;So if you create a publisher before calling startTransaction(); it returns error. I had a case like that where we created a publisher before starting transaction but we didn&apos;t subscribe to it until we started transaction. It used to work on older versions. I made a work around for it but I think it should be fixed too.  &lt;/p&gt;</comment>
                            <comment id="4111172" author="JIRAUSER1258163" created="Thu, 7 Oct 2021 18:56:51 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=rron%40kodelabs.com&quot; class=&quot;user-hover&quot; rel=&quot;rron@kodelabs.com&quot;&gt;rron@kodelabs.com&lt;/a&gt;,&lt;br/&gt;
Thanks for reporting the issue you encountered.&lt;/p&gt;

&lt;p&gt;The method &lt;tt&gt;ClientSessionPublisherImpl.commitTransaction&lt;/tt&gt; returns a &lt;tt&gt;Publisher&amp;lt;Void&amp;gt;&lt;/tt&gt;, therefore the method cannot &quot;know&quot; whether or not the returned &lt;tt&gt;Publisher&lt;/tt&gt; will be subscribed to or not, and cannot throw an error if the &lt;tt&gt;Publisher&lt;/tt&gt; does not get subscribed to. So it must be something else that throws the error you are talking about, but I cannot figure out what that is from the description. Could you please clarify the scenario with more details and attach the full stack trace of the exception that you are observing? If you can attach code that reproduces the error, that would be even better.&lt;/p&gt;</comment>
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