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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>[SERVER-48138] Improve mqlrun performance reading from stdin</title>
                <link>https://jira.mongodb.org/browse/SERVER-48138</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When reading from stdin, mqlrun makes small, unbuffered reads that hurt performance with small documents.  A spike solution using buffered reads increases small-document performance 2x to 5x depending on the input volume.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1348089">SERVER-48138</key>
            <summary>Improve mqlrun performance reading from stdin</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="david.golden@mongodb.com">David Golden</assignee>
                                    <reporter username="david.golden@mongodb.com">David Golden</reporter>
                        <labels>
                            <label>data-lake</label>
                    </labels>
                <created>Tue, 12 May 2020 14:46:36 +0000</created>
                <updated>Sun, 29 Oct 2023 22:08:20 +0000</updated>
                            <resolved>Sat, 16 May 2020 00:32:30 +0000</resolved>
                                                    <fixVersion>4.2.7</fixVersion>
                    <fixVersion>4.4.0-rc7</fixVersion>
                    <fixVersion>4.7.0</fixVersion>
                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3094107" author="xgen-internal-githook" created="Mon, 18 May 2020 23:33:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;David Golden&apos;, &apos;email&apos;: &apos;xdg@xdg.me&apos;, &apos;username&apos;: &apos;xdg&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48138&quot; title=&quot;Improve mqlrun performance reading from stdin&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48138&quot;&gt;&lt;del&gt;SERVER-48138&lt;/del&gt;&lt;/a&gt; Buffer mqlrun reads from stdin (#38)&lt;/p&gt;

&lt;p&gt;Buffering stdin increases performance substantially for small documents.&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/10gen/mongo-enterprise-modules/commit/b0b8d5d003f4f263e4a7827ff63c9c71542dde2a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/mongo-enterprise-modules/commit/b0b8d5d003f4f263e4a7827ff63c9c71542dde2a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3092560" author="xgen-internal-githook" created="Mon, 18 May 2020 15:19:22 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;David Golden&apos;, &apos;email&apos;: &apos;xdg@xdg.me&apos;, &apos;username&apos;: &apos;xdg&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48138&quot; title=&quot;Improve mqlrun performance reading from stdin&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48138&quot;&gt;&lt;del&gt;SERVER-48138&lt;/del&gt;&lt;/a&gt; Buffer mqlrun reads from stdin&lt;/p&gt;

&lt;p&gt;Buffering stdin increases performance substantially for small documents.&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/10gen/mongo-enterprise-modules/commit/6686d43babe19fc7cde16ea05b2960f0645641ea&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/mongo-enterprise-modules/commit/6686d43babe19fc7cde16ea05b2960f0645641ea&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3090865" author="xgen-internal-githook" created="Fri, 15 May 2020 22:24:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;David Golden&apos;, &apos;email&apos;: &apos;xdg@xdg.me&apos;, &apos;username&apos;: &apos;xdg&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48138&quot; title=&quot;Improve mqlrun performance reading from stdin&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48138&quot;&gt;&lt;del&gt;SERVER-48138&lt;/del&gt;&lt;/a&gt; Buffer mqlrun reads from stdin&lt;/p&gt;

&lt;p&gt;Buffering stdin increases performance substantially for small documents.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/10gen/mongo-enterprise-modules/commit/78dcda4c1d9adaf854f37158da0aed97f1b27d47&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/mongo-enterprise-modules/commit/78dcda4c1d9adaf854f37158da0aed97f1b27d47&lt;/a&gt;&lt;/p&gt;</comment>
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