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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-1232] C++ GridFS Client should support larger Chunk Size</title>
                <link>https://jira.mongodb.org/browse/SERVER-1232</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Current C++ GriidFS client doesn&apos;t support setting the chunk size. It uses default chunk size (256K), and which is small for multi-gigabyte data.&lt;/p&gt;

&lt;p&gt;I created the patch to add GridFS::setChunkSize(unsigned int size), to set the chunk size. Please review/modify the patch and commit.&lt;/p&gt;</description>
                <environment></environment>
        <key id="12142">SERVER-1232</key>
            <summary>C++ GridFS Client should support larger Chunk Size</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="eliot">Eliot Horowitz</assignee>
                                    <reporter username="kzk_mover">Kazuki Ohta</reporter>
                        <labels>
                    </labels>
                <created>Mon, 14 Jun 2010 02:55:09 +0000</created>
                <updated>Tue, 12 Jul 2016 00:29:22 +0000</updated>
                            <resolved>Mon, 14 Jun 2010 15:32:43 +0000</resolved>
                                                    <fixVersion>1.5.3</fixVersion>
                                    <component>Internal Client</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="114586" author="artemgr" created="Sat, 28 Apr 2012 16:51:53 +0000"  >&lt;p&gt;The massert in the patch rejects any chunk size except 0!&lt;br/&gt;
It should assert `size != 0`, not `size == 0`.&lt;/p&gt;</comment>
                            <comment id="15258" author="adrien" created="Thu, 1 Jul 2010 02:03:24 +0000"  >&lt;p&gt;To complete your comments guys,&lt;/p&gt;

&lt;p&gt;I recently benchmarked GridFS, loading small (&amp;lt; 500 kb) and large ( &amp;gt; 1 gb) files, with different chunk size, thanks to PHP driver.&lt;br/&gt;
The default size was the faster way to insert everything, and the difference was significant.&lt;/p&gt;</comment>
                            <comment id="14746" author="auto" created="Mon, 14 Jun 2010 15:32:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;erh&apos;, &apos;name&apos;: &apos;Eliot Horowitz&apos;, &apos;email&apos;: &apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: option to set chunk size on gridfs client &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1232&quot; title=&quot;C++ GridFS Client should support larger Chunk Size&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1232&quot;&gt;&lt;del&gt;SERVER-1232&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/76635118f786178abb5a1452ecda195ffe5b5e0b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/76635118f786178abb5a1452ecda195ffe5b5e0b&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="14733" author="eliot" created="Mon, 14 Jun 2010 13:47:26 +0000"  >&lt;p&gt;I don&apos;t think a larger chunk size will make loading any faster actually - possibly even the opposite depending on what you do with it.&lt;br/&gt;
Thought you can certainly experiment?&lt;/p&gt;

&lt;p&gt;Did you see my email about the contributor agreement?&lt;/p&gt;</comment>
                            <comment id="14732" author="kzk_mover" created="Mon, 14 Jun 2010 13:34:08 +0000"  >&lt;p&gt;&amp;gt; but i don&apos;t think the chunk size is small for multi-gigabyte data. &lt;/p&gt;

&lt;p&gt;We&apos;re now considering to store 10s of 20gb data (search indices). If 256k, the number of chunks for each data is 80000. This is an acceptable number for the database? The cost of the transfer could be reduced if the # of chunks is small?&lt;/p&gt;

&lt;p&gt;&amp;gt; this keeps resource requirements low on clients&lt;/p&gt;

&lt;p&gt;Yes, definitely.&lt;/p&gt;

&lt;p&gt;And also, the motivation of this patch is Ruby client has an interface to change the chunk size.&lt;/p&gt;</comment>
                            <comment id="14717" author="eliot" created="Mon, 14 Jun 2010 07:31:00 +0000"  >&lt;p&gt;the patch is probably a good idea, but i don&apos;t think the chunk size is small for multi-gigabyte data.&lt;br/&gt;
more chunks isn&apos;t a problem, and this keeps resource requirements low on clients&lt;/p&gt;</comment>
                    </comments>
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                            <attachment id="10238" name="mongodb-cpp-gridfs-set-chunksize.patch" size="3515" author="kzk_mover" created="Mon, 14 Jun 2010 02:55:09 +0000"/>
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