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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-28649] Create a currentRouterOps command in the mongos.</title>
                <link>https://jira.mongodb.org/browse/SERVER-28649</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In many cases when diagnosing the behavior of a sharded cluster, there has been a need to better understand the current behavior of what the mongos is doing. We have often been able to work around this, but it would be much more direct and clear if we could just directly query the current state of routing operations. To this end, I suggest the creation of a &lt;tt&gt;currentRouterOps&lt;/tt&gt; command (name not important). When called against a mongos, it would generate that would include:&lt;/p&gt;

&lt;p&gt;For each inbound request from clients:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;client host:port&lt;/li&gt;
	&lt;li&gt;what the operation is&lt;/li&gt;
	&lt;li&gt;time of arrival&lt;/li&gt;
	&lt;li&gt;if there&apos;s any classification the mongos does of ops (scatter/gather, directly steered, etc), include that&lt;/li&gt;
	&lt;li&gt;which backend(s) (shard mongod or config server) it determined to route the op to
	&lt;ul&gt;
		&lt;li&gt;for each backend, what role it plays (i.e. in a scatter/gather, who are the scatterers vs gatherer)&lt;/li&gt;
		&lt;li&gt;which connection(s) are being used for that backend&lt;/li&gt;
		&lt;li&gt;current believed status of that op on the backend.&lt;/li&gt;
	&lt;/ul&gt;
	&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;While this would be good for future versions, please consider adding it to all non-EOL versions of mongos.&lt;/p&gt;</description>
                <environment></environment>
        <key id="371535">SERVER-28649</key>
            <summary>Create a currentRouterOps command in the mongos.</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="3">Duplicate</resolution>
                                        <assignee username="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="rod.adams@mongodb.com">Rod Adams</reporter>
                        <labels>
                    </labels>
                <created>Thu, 6 Apr 2017 14:36:46 +0000</created>
                <updated>Tue, 6 Dec 2022 04:04:04 +0000</updated>
                            <resolved>Wed, 14 Mar 2018 12:55:46 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>11</watches>
                                                                                                                <comments>
                            <comment id="1833313" author="david.storch" created="Wed, 14 Mar 2018 12:55:05 +0000"  >&lt;p&gt;This feature request should be satisfied by the work in progress under &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18094&quot; title=&quot;currentOp on a mongoS should also show current mongoS operations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18094&quot;&gt;&lt;del&gt;SERVER-18094&lt;/del&gt;&lt;/a&gt;, so I am closing this ticket as a duplicate. &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18094&quot; title=&quot;currentOp on a mongoS should also show current mongoS operations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18094&quot;&gt;&lt;del&gt;SERVER-18094&lt;/del&gt;&lt;/a&gt; will add a &lt;tt&gt;localOps&lt;/tt&gt; flag to the &lt;tt&gt;$currentOp&lt;/tt&gt; command. A client will be able to issue the following to a mongos in order to see information about the operations that mongos is currently executing:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;adminDb.aggregate([{$currentOp: {localOps: true}}])&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</comment>
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                <issuelinks>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                            <outwardlinks description="duplicates">
                                        <issuelink>
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        </issuelink>
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                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="464771">SERVER-32103</issuekey>
        </issuelink>
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