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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-2806] fix finalize error message WAS: Database/table creation does not work from getSisterDB in sharded map/reduce (should assert?)</title>
                <link>https://jira.mongodb.org/browse/SERVER-2806</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When running a map/reduce on a sharded collection with a finalize() function, cross-database creation does not work (or assert):&lt;/p&gt;

&lt;p&gt;Finalize example (assuming new_db does not yet exist):&lt;/p&gt;

&lt;p&gt;finalize = function (key, value) {&lt;/p&gt;

&lt;p&gt;	var new_db = db.getSisterDB(&quot;new_db&quot;);&lt;br/&gt;
	stat = value;&lt;br/&gt;
	stat._id = key;&lt;br/&gt;
	new_db.table.save(stat);&lt;/p&gt;

&lt;p&gt;	return value;&lt;br/&gt;
};&lt;/p&gt;

&lt;p&gt;In this instance the new_db database is created, but is completely inaccessible and produces inconsistent errors:&lt;/p&gt;

&lt;p&gt;&amp;gt; db.getCollectionNames();&lt;br/&gt;
Mon Mar 21 15:15:04 uncaught exception: error: &lt;/p&gt;
{ &quot;$err&quot; : &quot;no primary!&quot;, &quot;code&quot; : 10178 }
&lt;p&gt;&amp;gt; db.repairDatabase();&lt;br/&gt;
Mon Mar 21 15:09:00 uncaught exception: error &lt;/p&gt;
{ &quot;$err&quot; : &quot;wrong type for BSONElement () 0 != 8&quot;, &quot;code&quot; : 13111 }
&lt;p&gt;&amp;gt; db.repairDatabase();&lt;br/&gt;
{&lt;br/&gt;
	&quot;assertion&quot; : &quot;no primary shard configured for db: new_db&quot;,&lt;br/&gt;
	&quot;assertionCode&quot; : 8041,&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 database also cannot be dropped:&lt;/p&gt;

&lt;p&gt;&amp;gt; db.dropDatabase();&lt;br/&gt;
{&lt;br/&gt;
	&quot;assertion&quot; : &quot;assertion client/../s/shard.h:80&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;</description>
                <environment></environment>
        <key id="15194">SERVER-2806</key>
            <summary>fix finalize error message WAS: Database/table creation does not work from getSisterDB in sharded map/reduce (should assert?)</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="-1">Unassigned</assignee>
                                    <reporter username="alan">Alan Milford</reporter>
                        <labels>
                    </labels>
                <created>Mon, 21 Mar 2011 15:26:20 +0000</created>
                <updated>Tue, 19 Mar 2013 20:18:40 +0000</updated>
                            <resolved>Mon, 11 Mar 2013 18:20:38 +0000</resolved>
                                    <version>1.8.0-rc2</version>
                                                    <component>Internal Code</component>
                    <component>JavaScript</component>
                    <component>MapReduce</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="286478" author="schwerin" created="Mon, 11 Mar 2013 18:20:38 +0000"  >&lt;p&gt;As of 2.4.0, the &quot;db&quot; object is not even available in map, reduce and finalize methods, to further emphasize that this is not allowed behavior.&lt;/p&gt;</comment>
                            <comment id="26460" author="eliot" created="Tue, 22 Mar 2011 02:53:56 +0000"  >&lt;p&gt;Your&apos;e not supposed to write to a db from a finalize at all.&lt;/p&gt;</comment>
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