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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-2071] API documentation for MongoClient 3.0+ should describe mongos round-robin selection</title>
                <link>https://jira.mongodb.org/browse/JAVA-2071</link>
                <project id="10006" key="JAVA">Java Driver</project>
                    <description>&lt;p&gt;In the API documentation for the 3.0+ &lt;tt&gt;MongoClient&lt;/tt&gt; options:&lt;br/&gt;
&lt;a href=&quot;http://api.mongodb.org/java/3.0/?com/mongodb/MongoClientOptions.html&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://api.mongodb.org/java/3.0/?com/mongodb/MongoClientOptions.html&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;When using a &lt;tt&gt;List&lt;/tt&gt; of servers it states:&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;If this is a list of mongos servers, it will pick the closest (lowest ping time) one to send all requests to, and automatically fail over to the next server if the closest is down.&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;But with 3.0+ this is no longer true, as described in &lt;br/&gt;
&lt;tt&gt;MongoClientOptions.getLocalThreshold()&lt;/tt&gt;:&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;Gets the local threshold. When choosing among multiple MongoDB servers to send a request, the MongoClient will only send that request to a server whose ping time is less than or equal to the server with the fastest ping time plus the local threshold.&lt;/p&gt;&lt;/blockquote&gt;

</description>
                <environment></environment>
        <key id="245106">JAVA-2071</key>
            <summary>API documentation for MongoClient 3.0+ should describe mongos round-robin selection</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="9">Done</resolution>
                                        <assignee username="jeff.yemin@mongodb.com">Jeffrey Yemin</assignee>
                                    <reporter username="alan.mccoy">Roger McCoy</reporter>
                        <labels>
                    </labels>
                <created>Sun, 27 Dec 2015 20:01:03 +0000</created>
                <updated>Wed, 19 Oct 2016 22:31:19 +0000</updated>
                            <resolved>Thu, 9 Jun 2016 14:22:26 +0000</resolved>
                                    <version>3.2.0</version>
                                    <fixVersion>3.3.0</fixVersion>
                                    <component>Documentation</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1289241" author="xgen-internal-githook" created="Thu, 9 Jun 2016 14:22:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jyemin&apos;, u&apos;name&apos;: u&apos;Jeff Yemin&apos;, u&apos;email&apos;: u&apos;jeff.yemin@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-2071&quot; title=&quot;API documentation for MongoClient 3.0+ should describe mongos round-robin selection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-2071&quot;&gt;&lt;del&gt;JAVA-2071&lt;/del&gt;&lt;/a&gt;: Update Mongo and MongoClient constructor documentation to describe random server selection algorithm&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/commit/1b949e5aaa3793ffe7091e7582607f7008898df1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/commit/1b949e5aaa3793ffe7091e7582607f7008898df1&lt;/a&gt;&lt;/p&gt;</comment>
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