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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-1527] Performance of first() could be improved</title>
                <link>https://jira.mongodb.org/browse/JAVA-1527</link>
                <project id="10006" key="JAVA">Java Driver</project>
                    <description>&lt;p&gt;Performance testing has shown that the new first() method on the CRUD API is not very performant if there are documents in the database that match the search criteria but are not needed.&lt;/p&gt;

&lt;p&gt;For example:&lt;/p&gt;

&lt;p&gt;            result = collection.find().first();&lt;/p&gt;

&lt;p&gt;Will fetch all the first batch of results from the server, when the user only really wants the first one.&lt;/p&gt;

&lt;p&gt;I suggest the &quot;first&quot; method adds a limit to bring the performance up to something more inline with the 2.x driver.&lt;/p&gt;</description>
                <environment></environment>
        <key id="166224">JAVA-1527</key>
            <summary>Performance of first() could be improved</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="9">Done</resolution>
                                        <assignee username="ross@mongodb.com">Ross Lawley</assignee>
                                    <reporter username="trisha.gee@10gen.com">Trisha Gee</reporter>
                        <labels>
                            <label>rc</label>
                    </labels>
                <created>Wed, 29 Oct 2014 20:01:08 +0000</created>
                <updated>Fri, 1 Apr 2016 20:41:06 +0000</updated>
                            <resolved>Tue, 4 Nov 2014 17:27:35 +0000</resolved>
                                                    <fixVersion>3.0.0</fixVersion>
                                    <component>Performance</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="869428" author="jeff.yemin" created="Tue, 31 Mar 2015 20:09:47 +0000"  >&lt;p&gt;Closing all resolved 3.0.0 issues, as 3.0.0 has been tagged and released.&lt;/p&gt;</comment>
                            <comment id="817978" author="xgen-internal-githook" created="Fri, 30 Jan 2015 18:44:30 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;rozza&apos;, u&apos;name&apos;: u&apos;Ross Lawley&apos;, u&apos;email&apos;: u&apos;ross.lawley@gmail.com&apos;}
&lt;p&gt;Message: Set limit(-1) for findOperations when using first() in OperationIterable&lt;/p&gt;

&lt;p&gt;Performance improvement for find().first() scenarios.&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-1527&quot; title=&quot;Performance of first() could be improved&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-1527&quot;&gt;&lt;del&gt;JAVA-1527&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/commit/45aa99d3aa3718cdfab48e72f115c3414bb258fe&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/commit/45aa99d3aa3718cdfab48e72f115c3414bb258fe&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="755804" author="xgen-internal-githook" created="Tue, 4 Nov 2014 17:27:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;rozza&apos;, u&apos;name&apos;: u&apos;Ross Lawley&apos;, u&apos;email&apos;: u&apos;ross.lawley@gmail.com&apos;}
&lt;p&gt;Message: Set limit(-1) for findOperations when using first() in OperationIterable&lt;/p&gt;

&lt;p&gt;Performance improvement for find().first() scenarios.&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-1527&quot; title=&quot;Performance of first() could be improved&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-1527&quot;&gt;&lt;del&gt;JAVA-1527&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: 3.0.x&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/commit/45aa99d3aa3718cdfab48e72f115c3414bb258fe&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/commit/45aa99d3aa3718cdfab48e72f115c3414bb258fe&lt;/a&gt;&lt;/p&gt;</comment>
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