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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
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    <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-4281] isMaster command hangs if db is fsyncLocked and authentication is enabled</title>
                <link>https://jira.mongodb.org/browse/SERVER-4281</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Steps to reproduce:&lt;br/&gt;
-Start mongod with authentication&lt;br/&gt;
-fsync lock the database&lt;br/&gt;
-try to write something (this shell will hang, make sure you already have another shell open and connected)&lt;br/&gt;
-in different shell run db.isMaster().  Shell will hang&lt;/p&gt;

&lt;p&gt;Doing the same thing without authentication does not cause it to hang.&lt;/p&gt;</description>
                <environment></environment>
        <key id="24907">SERVER-4281</key>
            <summary>isMaster command hangs if db is fsyncLocked and authentication is enabled</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="spencer@mongodb.com">Spencer Brody</reporter>
                        <labels>
                    </labels>
                <created>Mon, 14 Nov 2011 23:58:25 +0000</created>
                <updated>Fri, 29 Jun 2012 19:44:43 +0000</updated>
                            <resolved>Wed, 16 Nov 2011 05:56:44 +0000</resolved>
                                                                    <component>Replication</component>
                    <component>Security</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="67035" author="eliot" created="Wed, 16 Nov 2011 05:56:44 +0000"  >&lt;p&gt;correct fix is &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4243&quot; title=&quot;If there is a pending write due to an fsync lock, all reads are blocked&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4243&quot;&gt;&lt;del&gt;SERVER-4243&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="66706" author="spencer" created="Tue, 15 Nov 2011 00:16:44 +0000"  >&lt;p&gt;I&apos;m not sure what the best way to address this is. When using authentication, the isMaster command needs to check if it has permissions to run, and to do that it gets a read lock.  When fsync locked with a write pending, the read lock can&apos;t be taken, which causes this command to hang.  Short of fixing &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4243&quot; title=&quot;If there is a pending write due to an fsync lock, all reads are blocked&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4243&quot;&gt;&lt;del&gt;SERVER-4243&lt;/del&gt;&lt;/a&gt; I&apos;m not sure there&apos;s anything we can do about this...&lt;/p&gt;</comment>
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            <issuekey id="24895">SERVER-4277</issuekey>
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