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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-49867] Add server status metrics to track how often a cursor has more than 1 batch</title>
                <link>https://jira.mongodb.org/browse/SERVER-49867</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This could help us understand how often resumable queries would be useful.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1420279">SERVER-49867</key>
            <summary>Add server status metrics to track how often a cursor has more than 1 batch</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="vishnu.kaushik@mongodb.com">Vishnu Kaushik</assignee>
                                    <reporter username="judah.schvimer@mongodb.com">Judah Schvimer</reporter>
                        <labels>
                            <label>former-quick-wins</label>
                    </labels>
                <created>Fri, 24 Jul 2020 15:32:56 +0000</created>
                <updated>Sun, 29 Oct 2023 22:05:16 +0000</updated>
                            <resolved>Thu, 14 Jan 2021 20:10:02 +0000</resolved>
                                                    <fixVersion>5.0.0-rc0</fixVersion>
                                    <component>Querying</component>
                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="3583593" author="lingzhi.deng" created="Tue, 26 Jan 2021 20:50:27 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kateryna.kamenieva&quot; class=&quot;user-hover&quot; rel=&quot;kateryna.kamenieva&quot;&gt;kateryna.kamenieva&lt;/a&gt; This (together with &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; for mongoS) was done on the master branch. Do you know if we may want to backport them? Feel free to request for backports as you see fit. &lt;/p&gt;</comment>
                            <comment id="3564060" author="xgen-internal-githook" created="Thu, 14 Jan 2021 02:04:08 +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-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; Add 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/3669598fe570cd5e24f01aac9df6144397a0203f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3669598fe570cd5e24f01aac9df6144397a0203f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3333129" author="bernard.gorman" created="Tue, 11 Aug 2020 16:37:44 +0000"  >&lt;p&gt;Moved this into PM-915. It&apos;s worth considering whether we could derive a reasonable value from existing metrics, though I think this would be confounded by factors such as the fact that multi-shard aggregations never pull back any results in their first batch and always defer to the first &lt;tt&gt;getMore&lt;/tt&gt;.&lt;/p&gt;</comment>
                            <comment id="3325456" author="siyuan.zhou@10gen.com" created="Thu, 6 Aug 2020 20:22:24 +0000"  >&lt;p&gt;FWIW, we have the number of &lt;a href=&quot;https://docs.mongodb.com/manual/reference/command/serverStatus/#serverstatus.metrics.cursor.open.total&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&quot;metrics cursor open&quot;&lt;/a&gt; in server status. We also have the count of &quot;find&quot; and &quot;getMore&quot; commands.&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="1594949">DOCS-14139</issuekey>
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            <issuekey id="1518665">SERVER-51730</issuekey>
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            <issuekey id="1583459">SERVER-53639</issuekey>
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                            <customfieldvalue>Added two server status metrics on mongoD:&lt;br/&gt;
cursor.totalOpened - the total number of cursors that have been opened so far. Differs from cursor.open.total in that cursor.open.total is the total number of currently opened cursors, whereas this new metric is the number of cursors that have been opened until this point.&lt;br/&gt;
&lt;br/&gt;
cursor.moreThanOneBatch - the number of cursors that have returned more than one batch (i.e. have called getMore)</customfieldvalue>

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