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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-2135] MongoClient object accepts setWriteConcern which seems to have no effect</title>
                <link>https://jira.mongodb.org/browse/JAVA-2135</link>
                <project id="10006" key="JAVA">Java Driver</project>
                    <description>&lt;p&gt;The following code snippet does not set WriteConcern on the MongoDatabase instance as might be expected:&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;
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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;  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 = &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; MongoClient( &amp;lt;something&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;mongoClient.setWriteConcern(WriteConcern.REPLICAS_SAFE);&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;MongoDatabase db = 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;wc&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;
			&lt;/td&gt;
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&lt;/div&gt;
&lt;p/&gt;

</description>
                <environment></environment>
        <key id="269268">JAVA-2135</key>
            <summary>MongoClient object accepts setWriteConcern which seems to have no effect</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="asya.kamsky@mongodb.com">Asya Kamsky</reporter>
                        <labels>
                    </labels>
                <created>Wed, 2 Mar 2016 01:01:35 +0000</created>
                <updated>Fri, 18 Mar 2016 15:32:53 +0000</updated>
                            <resolved>Fri, 18 Mar 2016 15:32:53 +0000</resolved>
                                    <version>3.0.0</version>
                                                    <component>API</component>
                    <component>Write Operations</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1191754" author="jeff.yemin" created="Thu, 3 Mar 2016 13:56:21 +0000"  >&lt;p&gt;See related ticket &lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-2137&quot; title=&quot;Deprecate Mongo property mutators&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-2137&quot;&gt;&lt;del&gt;JAVA-2137&lt;/del&gt;&lt;/a&gt;.  &lt;/p&gt;</comment>
                            <comment id="1191746" author="jeff.yemin" created="Thu, 3 Mar 2016 13:51:43 +0000"  >&lt;p&gt;I see the issue.  The MongoClient.getDatabase method constructs a MongoDatabase instance with the write concern (and read preference) from MongoClientOptions instance rather than its own write concern (and read preference) property, which is initialized from MongoClientOptions but then can be changed via Mongo#setWriteConcern.&lt;/p&gt;

&lt;p&gt;Mongo#getDB works as expected.&lt;/p&gt;

&lt;p&gt;In practice, it&apos;s much more common for users to override WriteConcern default via MongoClientOptions or MongoClientURI, but as setWriteConcern is still supported, this should still be considered a bug.&lt;/p&gt;



</comment>
                            <comment id="1190738" author="asya" created="Wed, 2 Mar 2016 18:35:23 +0000"  >&lt;p&gt;Workarounds or scenarios that do work correctly:&lt;/p&gt;

&lt;ol&gt;
	&lt;li&gt;using MongoClientOptions class - something like&lt;br/&gt;
&lt;tt&gt;MongoClientOptions clientOptions = MongoClientOptions.builder().writeConcern(WriteConcern.MAJORITY).build();&lt;/tt&gt; followed by passing clientOptions to MongoClient constructor.&lt;/li&gt;
	&lt;li&gt;setting writeConcern on database or collection&lt;/li&gt;
	&lt;li&gt;using the old &lt;tt&gt;DB&lt;/tt&gt; class with &lt;tt&gt;client.getDB(&quot;wc&quot;)&lt;/tt&gt; &lt;b&gt;does&lt;/b&gt; inherit the writeConcern as expected.&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;The only combination that &lt;b&gt;doesn&apos;t&lt;/b&gt; work is the old way of setting writeConcern on the client and the new getDatabase method.&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="269665">JAVA-2137</issuekey>
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