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            <title>[SERVER-5609] Option to choose different hash algorithms when storing GridFS files</title>
                <link>https://jira.mongodb.org/browse/SERVER-5609</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We&apos;ve just begun the process of storing 500millions+ files into a GridFS server farm, and we&apos;re not comfortable with the default md5 hashing method due to the birthday paradox, currently we have to calculate a stronger hash ourself and then save the file with it, after that we run another command to remove the default md5 hash to save some space.&lt;/p&gt;

&lt;p&gt;It&apos;d be much quicker and simpler if mongodb can let us choose different hashing algorithms when saving files, md5 is for the 90s &lt;img class=&quot;emoticon&quot; src=&quot;https://jira.mongodb.org/images/icons/emoticons/wink.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="36299">SERVER-5609</key>
            <summary>Option to choose different hash algorithms when storing GridFS files</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="alex_yam">Alex Yam</reporter>
                        <labels>
                    </labels>
                <created>Sun, 15 Apr 2012 08:28:26 +0000</created>
                <updated>Wed, 15 Aug 2012 14:24:20 +0000</updated>
                            <resolved>Sun, 15 Apr 2012 12:29:55 +0000</resolved>
                                                                    <component>GridFS</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="109977" author="eliot" created="Sun, 15 Apr 2012 12:29:21 +0000"  >&lt;p&gt;The MD5 for gridfs isn&apos;t used for fetching, its only used to verify the upload was succesful, and so you can use it as an etag or other verification purposes.&lt;/p&gt;

&lt;p&gt;If there is a collision, it should not have any impact on correctness.&lt;/p&gt;</comment>
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