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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-2726] mongostat doesn&apos;t report not indexed queries for array fields</title>
                <link>https://jira.mongodb.org/browse/SERVER-2726</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&quot;idx miss %&quot; field was a steady zero, whereas updates of a 1-2 rows in a 1 million collection were totally slow.&lt;/p&gt;

&lt;p&gt;the update&apos;s specification was something like &lt;/p&gt;
{my_array_field : an_element_that_should_be_present_in_the_array}

&lt;p&gt;after an index was added for the array field, the process finished blazingly fast.&lt;/p&gt;</description>
                <environment>Ubuntu 10.10 (64bit)</environment>
        <key id="15066">SERVER-2726</key>
            <summary>mongostat doesn&apos;t report not indexed queries for array fields</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="-1">Unassigned</assignee>
                                    <reporter username="vak">Valery Khamenya</reporter>
                        <labels>
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                <created>Thu, 10 Mar 2011 09:59:18 +0000</created>
                <updated>Thu, 19 Apr 2012 18:24:51 +0000</updated>
                            <resolved>Thu, 10 Mar 2011 15:28:11 +0000</resolved>
                                    <version>1.7.6</version>
                                                    <component>Index Maintenance</component>
                    <component>Performance</component>
                    <component>Querying</component>
                    <component>Tools</component>
                    <component>Usability</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="25675" author="eliot" created="Thu, 10 Mar 2011 15:28:11 +0000"  >&lt;p&gt;idx miss % is how many btree nodes have to be paged in, not whether a query uses them or not.&lt;/p&gt;

&lt;p&gt;there could be another field like &quot;# of documents examined&quot; but that&apos;s different&lt;/p&gt;</comment>
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