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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-3086] mongoexport only exports one shard&apos;s worth of data</title>
                <link>https://jira.mongodb.org/browse/SERVER-3086</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Run:&lt;/p&gt;

&lt;p&gt;$ python simple-setup.py --chunksize=1&lt;/p&gt;

&lt;p&gt;In the shell:&lt;/p&gt;

&lt;p&gt;&amp;gt; for(i=0;i&amp;lt;10000000;i++) {db.foo.insert(&lt;/p&gt;
{x:1,y:i,date:new Date(), str:&quot;all the talk on the market&quot;}
&lt;p&gt;); }&lt;br/&gt;
&amp;gt; db.foo.count()&lt;br/&gt;
10000000&lt;/p&gt;

&lt;p&gt;Export this collection:&lt;/p&gt;

&lt;p&gt;$ mongoexport -d test -c foo -o foo.json&lt;br/&gt;
connected to: 127.0.0.1&lt;br/&gt;
exported 2610450 records&lt;/p&gt;</description>
                <environment></environment>
        <key id="16957">SERVER-3086</key>
            <summary>mongoexport only exports one shard&apos;s worth of data</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="9">Done</resolution>
                                        <assignee username="greg_10gen">Greg Studer</assignee>
                                    <reporter username="kristina">Kristina Chodorow</reporter>
                        <labels>
                    </labels>
                <created>Thu, 12 May 2011 14:24:54 +0000</created>
                <updated>Tue, 12 Jul 2016 00:18:31 +0000</updated>
                            <resolved>Fri, 3 Jun 2011 21:32:01 +0000</resolved>
                                    <version>1.9.0</version>
                                    <fixVersion>1.9.1</fixVersion>
                                    <component>Tools</component>
                                        <votes>2</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="36065" author="greg_10gen" created="Fri, 3 Jun 2011 21:32:01 +0000"  >&lt;p&gt;Issues still remain with other sharded queries including count() seen in this test case above, so leaving this open for now.&lt;/p&gt;

&lt;p&gt;In some cases during migration, count() can still report more than the correct number of documents.&lt;/p&gt;</comment>
                            <comment id="36063" author="auto" created="Fri, 3 Jun 2011 21:29:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;gregstuder&apos;, u&apos;name&apos;: u&apos;gregs&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;}
&lt;p&gt;Message: dbGetMore needs to filter out newly migrated results &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3086&quot; title=&quot;mongoexport only exports one shard&amp;#39;s worth of data&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3086&quot;&gt;&lt;del&gt;SERVER-3086&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6a1bc036308fdd1b867a072e5ba70afc04556e07&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6a1bc036308fdd1b867a072e5ba70afc04556e07&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="36062" author="auto" created="Fri, 3 Jun 2011 21:29:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;gregstuder&apos;, u&apos;name&apos;: u&apos;gregs&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;}
&lt;p&gt;Message: always use parallelcursor &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3086&quot; title=&quot;mongoexport only exports one shard&amp;#39;s worth of data&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3086&quot;&gt;&lt;del&gt;SERVER-3086&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e329ba1baea62adcca1a2882592cbc1df89f9d31&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e329ba1baea62adcca1a2882592cbc1df89f9d31&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="35722" author="greg_10gen" created="Thu, 2 Jun 2011 15:05:39 +0000"  >&lt;p&gt;Seems like the version change due to a migration aborts the clustered cursor.&lt;/p&gt;</comment>
                            <comment id="35657" author="greg_10gen" created="Wed, 1 Jun 2011 22:33:56 +0000"  >&lt;p&gt;This does not appear to fix the issue, useful in any case, but there appear to be other factors.&lt;/p&gt;</comment>
                            <comment id="35656" author="auto" created="Wed, 1 Jun 2011 22:32:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;gregstuder&apos;, u&apos;name&apos;: u&apos;gregs&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;}
&lt;p&gt;Message: add slaveOk option to mongoexport &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3086&quot; title=&quot;mongoexport only exports one shard&amp;#39;s worth of data&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3086&quot;&gt;&lt;del&gt;SERVER-3086&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c3d9873759eec207dfab3868b2e5f780d3a09743&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c3d9873759eec207dfab3868b2e5f780d3a09743&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="35632" author="greg_10gen" created="Wed, 1 Jun 2011 21:00:05 +0000"  >&lt;p&gt;yes, appears to be related to slaveok and slaves not being up-to-date&lt;/p&gt;

&lt;p&gt;Exported records increase in number over time.&lt;/p&gt;</comment>
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