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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-17617] One config server being down can block read operations on config data for seconds</title>
                <link>https://jira.mongodb.org/browse/SERVER-17617</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;See comment on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-11980&quot; title=&quot;Improve user cache invalidation enforcement on mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-11980&quot;&gt;&lt;del&gt;SERVER-11980&lt;/del&gt;&lt;/a&gt;.  User reported that having one config server down meant than when the user cache was invalidated repopulating it would take over 10 seconds.&lt;/p&gt;</description>
                <environment></environment>
        <key id="189895">SERVER-17617</key>
            <summary>One config server being down can block read operations on config data for seconds</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="kaloian.manassiev@mongodb.com">Kaloian Manassiev</assignee>
                                    <reporter username="spencer@mongodb.com">Spencer Brody</reporter>
                        <labels>
                    </labels>
                <created>Mon, 16 Mar 2015 21:22:10 +0000</created>
                <updated>Fri, 5 Feb 2016 15:21:38 +0000</updated>
                            <resolved>Fri, 20 Nov 2015 04:07:16 +0000</resolved>
                                                    <fixVersion>3.2.0-rc4</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>11</watches>
                                                                                                                <comments>
                            <comment id="1093930" author="max.hirschhorn@10gen.com" created="Fri, 20 Nov 2015 04:07:16 +0000"  >&lt;p&gt;Fixed by &lt;a href=&quot;https://github.com/mongodb/mongo/commit/6c5d292463c0230104a4ca14716d8e82ebbcc2aa&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;6c5d292&lt;/a&gt;.&lt;/p&gt;

&lt;hr /&gt;

&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kaloianm&apos;, u&apos;name&apos;: u&apos;Kaloian Manassiev&apos;, u&apos;email&apos;: u&apos;kaloian.manassiev@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-21293&quot; title=&quot;Loading config data when CSRS member is blackholed gets mongos stuck&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-21293&quot;&gt;&lt;del&gt;SERVER-21293&lt;/del&gt;&lt;/a&gt; Add network timeout to the query fetcher&lt;/p&gt;

&lt;p&gt;The query fecther currently does not pass timeout and because of this if&lt;br/&gt;
the config server is black-holed a command may never complete.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6c5d292463c0230104a4ca14716d8e82ebbcc2aa&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6c5d292463c0230104a4ca14716d8e82ebbcc2aa&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1071734" author="spencer" created="Tue, 27 Oct 2015 15:53:52 +0000"  >&lt;p&gt;Going to make one more attempt to repro the original issue using SIGSTOP&lt;/p&gt;</comment>
                            <comment id="1068253" author="spencer" created="Thu, 22 Oct 2015 19:31:22 +0000"  >&lt;p&gt;I strongly suspect that switching the config servers to be a replica set will resolve this issue, however I am unable to reproduce the original issue (including using 3.0) so it is impossible to confirm for certain.&lt;/p&gt;</comment>
                            <comment id="853453" author="spencer" created="Mon, 16 Mar 2015 21:23:00 +0000"  >&lt;p&gt;Assigning to 3.1 Required to indicate that by the end of 3.1 we at least need to take another look at this and verify if the config server communication refactor we&apos;re doing anyway fixes this for free.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="190755">SERVER-17668</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="234914">SERVER-21007</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="239719">SERVER-21496</issuekey>
        </issuelink>
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                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="176401">SERVER-16690</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="176402">SERVER-16691</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="12490">SERVER-1448</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="101323">SERVER-11980</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="263384">SERVER-22486</issuekey>
        </issuelink>
                            </inwardlinks>
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