<!-- 
RSS generated by JIRA (9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66) at Thu Feb 08 03:05:24 UTC 2024

It is possible to restrict the fields that are returned in this document by specifying the 'field' parameter in your request.
For example, to request only the issue key and summary append 'field=key&field=summary' to the URL of your request.
-->
<rss version="0.92" >
<channel>
    <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>
    </build-info>


<item>
            <title>[SERVER-4243] If there is a pending write due to an fsync lock, all reads are blocked</title>
                <link>https://jira.mongodb.org/browse/SERVER-4243</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;By locking the database and issuing a single write, all readers are starved.  No read operations can go through.&lt;/p&gt;

&lt;p&gt;Because of this, a new shell will start but cannot be used &amp;#8211; it must be doing some read-lock requiring operation. Ostensibly, this is due to the shell attempting to read but being unable to do so due to the waiting write starving any reader attempt.&lt;/p&gt;

&lt;p&gt;Issuing &quot;mongo --eval &apos;db.fsyncUnlock()&apos;&quot; will unlock the database, allow writes through, and unfreeze the shell.&lt;/p&gt;</description>
                <environment>64bit Ubuntu 11.04 + gcc 4.5.2</environment>
        <key id="24747">SERVER-4243</key>
            <summary>If there is a pending write due to an fsync lock, all reads are blocked</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="dwight@mongodb.com">Dwight Merriman</assignee>
                                    <reporter username="dan@mongodb.com">Daniel Pasette</reporter>
                        <labels>
                    </labels>
                <created>Thu, 10 Nov 2011 16:34:18 +0000</created>
                <updated>Mon, 11 Jul 2016 18:34:52 +0000</updated>
                            <resolved>Tue, 3 Nov 2015 23:29:28 +0000</resolved>
                                    <version>2.0.1</version>
                                    <fixVersion>2.2.0</fixVersion>
                                    <component>Concurrency</component>
                                        <votes>3</votes>
                                    <watches>11</watches>
                                                                                                                <comments>
                            <comment id="127886" author="auto" created="Thu, 7 Jun 2012 13:19:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;milkie&apos;, u&apos;name&apos;: u&apos;Eric Milkie&apos;, u&apos;email&apos;: u&apos;milkie@10gen.com&apos;}
&lt;p&gt;Message: &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; prevent write lock in network rs thread from blocking readers during fsync&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5e41dd2b7bde5cfb48e9e90817aa76348d08b14c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5e41dd2b7bde5cfb48e9e90817aa76348d08b14c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="125256" author="auto" created="Fri, 1 Jun 2012 20:20:02 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;singhsiddharth&apos;, u&apos;name&apos;: u&apos;Siddharth Singh&apos;, u&apos;email&apos;: u&apos;singhsiddharth@gmail.com&apos;}
&lt;p&gt;Message: &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; Allow reading on secondaries+fsyncLock&lt;/p&gt;

&lt;p&gt;Allow reading on secondaries with fsyncLock mode enabled.&lt;br/&gt;
Previously oplog application would cause blocking.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e1aa2fd708382e48a6e01ce46b988fb0d8abec07&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e1aa2fd708382e48a6e01ce46b988fb0d8abec07&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="121921" author="auto" created="Tue, 22 May 2012 16:05:21 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;dwight&apos;, u&apos;name&apos;: u&apos;Dwight&apos;, u&apos;email&apos;: u&apos;dwight@10gen.com&apos;}
&lt;p&gt;Message: &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; allow reading on secondaries with fsyncLock mode is enabled. previously oplog application would cause blocking. the solution is a bit hackish and eventually when this is 100% fixed, meaning it even works on primaries, this can go away&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/73aa870d129bd7d51de946b91c16cc056aaacbc7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/73aa870d129bd7d51de946b91c16cc056aaacbc7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="74199" author="auto" created="Sun, 18 Dec 2011 06:14:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;astaple&apos;, u&apos;name&apos;: u&apos;Aaron&apos;, u&apos;email&apos;: u&apos;aaron@10gen.com&apos;}
&lt;p&gt;Message: &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; temporarily remove fsync2 test from parallel suite&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3c7e80456d38cb759133c2c3e955b531f4c625ea&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3c7e80456d38cb759133c2c3e955b531f4c625ea&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="66848" author="auto" created="Tue, 15 Nov 2011 17:26:35 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;stbrody&apos;, u&apos;name&apos;: u&apos;Spencer T Brody&apos;, u&apos;email&apos;: u&apos;spencer@10gen.com&apos;}
&lt;p&gt;Message: Revert &quot;Stop fsync-lock from blocking out reads. &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;&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 6c88cf0b68e8dbec9920125fcdae4bb114be2c59.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/dd8703183c65511765dce1dbf14d9027a166f2ea&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/dd8703183c65511765dce1dbf14d9027a166f2ea&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="66720" author="auto" created="Tue, 15 Nov 2011 02:32:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;stbrody&apos;, u&apos;name&apos;: u&apos;Spencer T Brody&apos;, u&apos;email&apos;: u&apos;spencer@10gen.com&apos;}
&lt;p&gt;Message: Test that reads don&apos;t get blocked by writes when fsync-locked. &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;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ab709c21922572429f31b78a74c661e64ff84270&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ab709c21922572429f31b78a74c661e64ff84270&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="66719" author="auto" created="Tue, 15 Nov 2011 02:32:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;stbrody&apos;, u&apos;name&apos;: u&apos;Spencer T Brody&apos;, u&apos;email&apos;: u&apos;spencer@10gen.com&apos;}
&lt;p&gt;Message: Stop fsync-lock from blocking out reads. &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;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6c88cf0b68e8dbec9920125fcdae4bb114be2c59&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6c88cf0b68e8dbec9920125fcdae4bb114be2c59&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="24907">SERVER-4281</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                                        </outwardlinks>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="14064">SERVER-2278</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="24895">SERVER-4277</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="12449">SERVER-1423</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                    </attachments>
                <subtasks>
                    </subtasks>
                <customfields>
                                                <customfield id="customfield_10050" key="com.atlassian.jira.toolkit:comments">
                        <customfieldname># Replies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>7.0</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                <customfield id="customfield_10055" key="com.atlassian.jira.ext.charting:firstresponsedate">
                        <customfieldname>Date of 1st Reply</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>Tue, 15 Nov 2011 02:32:52 +0000</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10052" key="com.atlassian.jira.toolkit:dayslastcommented">
                        <customfieldname>Days since reply</customfieldname>
                        <customfieldvalues>
                                        11 years, 36 weeks, 6 days ago
    
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_18254" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Dependencies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue><![CDATA[]]></customfieldvalue>


                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_15850" key="com.atlassian.jira.plugins.jira-development-integration-plugin:devsummary">
                        <customfieldname>Development</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    <customfield id="customfield_10057" key="com.atlassian.jira.toolkit:lastusercommented">
                        <customfieldname>Last comment by Customer</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>true</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                            <customfield id="customfield_10056" key="com.atlassian.jira.toolkit:lastupdaterorcommenter">
                        <customfieldname>Last commenter</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>ramon.fernandez@mongodb.com</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_11151" key="com.atlassian.jira.toolkit:LastCommentDate">
                        <customfieldname>Last public comment date</customfieldname>
                        <customfieldvalues>
                            11 years, 36 weeks, 6 days ago
                        </customfieldvalues>
                    </customfield>
                                                                                                                        <customfield id="customfield_10000" key="com.atlassian.jira.plugin.system.customfieldtypes:radiobuttons">
                        <customfieldname>Old_Backport</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="10000"><![CDATA[No]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10032" key="com.atlassian.jira.plugin.system.customfieldtypes:select">
                        <customfieldname>Operating System</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="10020"><![CDATA[Linux]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_10051" key="com.atlassian.jira.toolkit:participants">
                        <customfieldname>Participants</customfieldname>
                        <customfieldvalues>
                                        <customfieldvalue>auto</customfieldvalue>
            <customfieldvalue>dan@mongodb.com</customfieldvalue>
            <customfieldvalue>dwight@mongodb.com</customfieldvalue>
    
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_14254" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Product Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|hrom3b:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_12550" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2|hrit13:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10558" key="com.pyxis.greenhopper.jira:gh-global-rank">
                        <customfieldname>Rank (Obsolete)</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>23356</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                            <customfield id="customfield_23361" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Requested By</customfieldname>
                        <customfieldvalues>
                                

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_10053" key="com.atlassian.jira.ext.charting:timeinstatus">
                        <customfieldname>Time In Status</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <customfield id="customfield_22870" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Triagers</customfieldname>
                        <customfieldvalues>
                                

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                    <customfield id="customfield_14350" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>serverRank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|ht0ao7:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                    </customfields>
    </item>
</channel>
</rss>