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    <title>MongoDB Jira</title>
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    <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-17188] 2.6 mongodump cannot read from 3.0 using WiredTiger storage engine</title>
                <link>https://jira.mongodb.org/browse/SERVER-17188</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If you attempt to dump a database from a 3.0 instance with MMAPv1 storage engine with a 2.6.6 mongodump, this succeeds.  However, switch the 3.0 instance over to WT storage engine (same data), and the mongodump proceeds, but returns immediately without actually dumping out anything:&lt;/p&gt;
&lt;p/&gt;
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&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;./mongodump -d test -c data&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;connected to: 127.0.0.1&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;2015-02-05T17:31:13.111+0000 DATABASE: test	 to 	dump/test&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
&lt;p&gt;There is no error, the dump/test folder is just empty and the command exits immediately.  Testing the same instance with 2.6 mongoexport succeeds, and data is returned, so this seems to be specific to 2.6 mongodump (3.0 mongodump also succeeds).&lt;/p&gt;

&lt;p&gt;We may need to require mongodump &amp;gt;=3.0 for use with wiredtiger rather than attempt to make the older tools work, but there should be an error advising of that fact rather than a silent failure.&lt;/p&gt;</description>
                <environment></environment>
        <key id="182742">SERVER-17188</key>
            <summary>2.6 mongodump cannot read from 3.0 using WiredTiger storage engine</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="adam@comerford.net">Adam Comerford</reporter>
                        <labels>
                    </labels>
                <created>Thu, 5 Feb 2015 17:39:26 +0000</created>
                <updated>Mon, 23 Feb 2015 14:16:18 +0000</updated>
                            <resolved>Thu, 5 Feb 2015 18:29:21 +0000</resolved>
                                    <version>3.0.0-rc7</version>
                                                    <component>Tools</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="822571" author="scotthernandez" created="Thu, 5 Feb 2015 18:28:36 +0000"  >&lt;p&gt;This is the same with the shell, but we will have a fix in the next 2.6.x release to address this: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-17087&quot; title=&quot;Add listCollections command functionality to 2.6 shell &amp;amp; client&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-17087&quot;&gt;&lt;del&gt;SERVER-17087&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;For now we should add this to the docs.&lt;/p&gt;</comment>
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