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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-2420] DB error when chunk moved back and forth</title>
                <link>https://jira.mongodb.org/browse/SERVER-2420</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Moving a chunk back and forth seems to erase the chunk data.  &lt;/p&gt;</description>
                <environment>Linux #42-Ubuntu SMP Thu Dec 2 02:41:37 UTC 2010 x86_64 GNU/Linux</environment>
        <key id="14332">SERVER-2420</key>
            <summary>DB error when chunk moved back and forth</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="greg_10gen">Greg Studer</reporter>
                        <labels>
                    </labels>
                <created>Thu, 27 Jan 2011 18:17:54 +0000</created>
                <updated>Thu, 17 Mar 2011 19:13:12 +0000</updated>
                            <resolved>Thu, 3 Mar 2011 16:48:38 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="22747" author="greg_10gen" created="Thu, 27 Jan 2011 19:34:51 +0000"  >&lt;p&gt;More info... when chunk is moved back and forth between shards, the move seems to eliminate the chunk bounds data, throwing this error (no bounds, not stale bounds, are found).  Test is a bit complex, requires two moves, can&apos;t seem to duplicate with a simpler setup (though third chunk split is not needed, actually).&lt;/p&gt;

&lt;p&gt;Error:  &lt;/p&gt;

&lt;p&gt;command { &quot;split&quot; : &quot;test.foo&quot;, &quot;find&quot; : &lt;/p&gt;
{ &quot;_id&quot; : 3 }
&lt;p&gt; } failed: {&lt;br/&gt;
	&quot;cause&quot; : {&lt;br/&gt;
		&quot;assertion&quot; : &quot;couldn&apos;t find chunk &lt;/p&gt;
{ _id: 0.0 }
&lt;p&gt;-&amp;gt;&lt;/p&gt;
{ _id: 9.0 }
&lt;p&gt;&quot;,&lt;br/&gt;
		&quot;assertionCode&quot; : 13586,&lt;br/&gt;
		&quot;errmsg&quot; : &quot;db assertion failure&quot;,&lt;br/&gt;
		&quot;ok&quot; : 0&lt;br/&gt;
	},&lt;br/&gt;
	&quot;ok&quot; : 0,&lt;br/&gt;
	&quot;errmsg&quot; : &quot;split failed&quot;&lt;br/&gt;
}&lt;/p&gt;</comment>
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            <issuekey id="14331">SERVER-2419</issuekey>
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                            <attachment id="10747" name="shard_movesplit.js" size="1742" author="greg_10gen" created="Thu, 27 Jan 2011 18:17:54 +0000"/>
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