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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-1329] &quot;can&apos;t map file memory&quot; after map/reduce gets interrupted</title>
                <link>https://jira.mongodb.org/browse/SERVER-1329</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I started the mongod server at the console with -vvv verbose level.  On another console I then tried to run a complex map/reduce query. As it took quite a while I killed the query with ctrl-c. As the map/reduce function still seemed to be running on the server I also shut down the server process by pressing ctrl-c. &lt;/p&gt;

&lt;p&gt;After that I was unable to access any data in the database. Allthough I could switch to the database, every other command resulted in following error message:&lt;/p&gt;

&lt;p&gt;can&apos;t map file memory&lt;/p&gt;

&lt;p&gt;Also if I tried to run db.repairDatabase() I&apos;ll got this error message&lt;/p&gt;

&lt;p&gt;{&lt;br/&gt;
        &quot;assertion&quot; : &quot;can&apos;t map file memory&quot;,&lt;br/&gt;
        &quot;errmsg&quot; : &quot;db assertion failure&quot;,&lt;br/&gt;
        &quot;ok&quot; : 0&lt;br/&gt;
}&lt;/p&gt;

&lt;p&gt;The only thing that helped to bring the database back was to run mongod --repair &lt;/p&gt;

&lt;p&gt;Of course I&apos;m aware that pressing ctrl-c is not the correct way of shutting down a server. However, it shouldn&apos;t result in such a severe breakdown of service if a not yet finished command gets interrupted.&lt;/p&gt;</description>
                <environment>Ubuntu 10.04 LTS 64 Bit</environment>
        <key id="12295">SERVER-1329</key>
            <summary>&quot;can&apos;t map file memory&quot; after map/reduce gets interrupted</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="5">Cannot Reproduce</resolution>
                                        <assignee username="eliot">Eliot Horowitz</assignee>
                                    <reporter username="moe">Moe Loepi</reporter>
                        <labels>
                    </labels>
                <created>Wed, 30 Jun 2010 05:46:45 +0000</created>
                <updated>Fri, 30 Mar 2012 14:37:01 +0000</updated>
                            <resolved>Wed, 29 Sep 2010 21:48:43 +0000</resolved>
                                    <version>1.4.3</version>
                                                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="15402" author="eliot" created="Mon, 5 Jul 2010 15:33:45 +0000"  >&lt;p&gt;Trying to reproduce would be great.&lt;br/&gt;
especialyl on 1.5.4 if you can on a dev server.&lt;/p&gt;</comment>
                            <comment id="15395" author="moe" created="Mon, 5 Jul 2010 07:54:20 +0000"  >&lt;p&gt;Unfortunately the server log isn&apos;t available as this occured on a temporary development server.&lt;/p&gt;

&lt;p&gt;But I can try to reproduce it and to attach the log then.&lt;/p&gt;</comment>
                            <comment id="15229" author="eliot" created="Wed, 30 Jun 2010 08:17:25 +0000"  >&lt;p&gt;Can you attach the server log?&lt;/p&gt;

&lt;p&gt;Depending on what it was doing - until there is single server durability (1.8) the --repair is definitely the correct solution.&lt;/p&gt;</comment>
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