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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-53639] Add MongoS server status metrics to track how often a cursor has more than 1 batch</title>
                <link>https://jira.mongodb.org/browse/SERVER-53639</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;MongoS starts off by issuing a query of batch size 0. Thus, cursors by MongoS will always call a getMore, and therefore, the server status metric which tracks how many cursors return more than one batch will have an artificially inflated value.&lt;/p&gt;

&lt;p&gt;The solution - we will be counting the number of cursors that call getMore on MongoS. Thus we will know when to ignore the artificially inflated value.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1583459">SERVER-53639</key>
            <summary>Add MongoS server status metrics to track how often a cursor has more than 1 batch</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="vishnu.kaushik@mongodb.com">Vishnu Kaushik</assignee>
                                    <reporter username="vishnu.kaushik@mongodb.com">Vishnu Kaushik</reporter>
                        <labels>
                    </labels>
                <created>Thu, 7 Jan 2021 20:57:01 +0000</created>
                <updated>Sun, 29 Oct 2023 21:59:03 +0000</updated>
                            <resolved>Fri, 22 Jan 2021 22:07:05 +0000</resolved>
                                                    <fixVersion>4.9.0-alpha3</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="3578856" author="xgen-internal-githook" created="Fri, 22 Jan 2021 22:00:26 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Vishnu Kaushik&apos;, &apos;email&apos;: &apos;vishnu.kaushik@mongodb.com&apos;, &apos;username&apos;: &apos;kauboy26&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53639&quot; title=&quot;Add MongoS server status metrics to track how often a cursor has more than 1 batch&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53639&quot;&gt;&lt;del&gt;SERVER-53639&lt;/del&gt;&lt;/a&gt; Add MongoS server status metrics to track how often a cursor has more than 1 batch&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2c3fa7426c27f5a93d060fce0384ae11c471a319&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2c3fa7426c27f5a93d060fce0384ae11c471a319&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3558410" author="lingzhi.deng" created="Mon, 11 Jan 2021 19:10:29 +0000"  >&lt;p&gt;I think this is to track the mongoS portion of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-49867&quot; title=&quot;Add server status metrics to track how often a cursor has more than 1 batch&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49867&quot;&gt;&lt;del&gt;SERVER-49867&lt;/del&gt;&lt;/a&gt;. We will provide the same metrics as &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-49867&quot; title=&quot;Add server status metrics to track how often a cursor has more than 1 batch&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49867&quot;&gt;&lt;del&gt;SERVER-49867&lt;/del&gt;&lt;/a&gt; on mongoS so that the metrics from mongoS will be accurate. &lt;/p&gt;</comment>
                            <comment id="3555788" author="bruce.lucas@10gen.com" created="Fri, 8 Jan 2021 21:11:04 +0000"  >&lt;p&gt;I&apos;m not sure what &quot;handled&quot; means - wouldn&apos;t we still want to record all getmores, even if of size 0?&lt;/p&gt;</comment>
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            <issuekey id="1598092">DOCS-14152</issuekey>
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                            <customfieldvalue>Added two server status metrics for MongoS - &amp;quot;mongos.cursor.totalOpened&amp;quot; and &amp;quot;mongos.cursor.moreThanOneBatch&amp;quot;. The former documents the total number of cursors that have been opened from the time the MongoS was launched until the time the stat was requested.&lt;br/&gt;
The second stat counts the number of MongoS cursors that have performed a getMore. (This is between the shell and the MongoS.)</customfieldvalue>

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