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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-19829] Replace MurmurHash for text index v3</title>
                <link>https://jira.mongodb.org/browse/SERVER-19829</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;MurmurHash is unstable, so text index v3 needs to use a new hash function. This MUST be completed before text index v3 is released in a stable version of MongoDB.&lt;/p&gt;</description>
                <environment></environment>
        <key id="224709">SERVER-19829</key>
            <summary>Replace MurmurHash for text index v3</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="mark.benvenuto@mongodb.com">Mark Benvenuto</assignee>
                                    <reporter username="adam.chelminski@mongodb.com">Adam Chelminski</reporter>
                        <labels>
                    </labels>
                <created>Fri, 7 Aug 2015 18:51:09 +0000</created>
                <updated>Sat, 19 Sep 2015 00:21:23 +0000</updated>
                            <resolved>Mon, 24 Aug 2015 16:01:26 +0000</resolved>
                                    <version>3.1.6</version>
                                    <fixVersion>3.1.8</fixVersion>
                                    <component>Text Search</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1012821" author="xgen-internal-githook" created="Mon, 24 Aug 2015 13:04:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;markbenvenuto&apos;, u&apos;name&apos;: u&apos;Mark Benvenuto&apos;, u&apos;email&apos;: u&apos;mark.benvenuto@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-19829&quot; title=&quot;Replace MurmurHash for text index v3&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-19829&quot;&gt;&lt;del&gt;SERVER-19829&lt;/del&gt;&lt;/a&gt;: Use MD5 and longer key prefixes in text index v3 for long terms.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1535c4b38a408f8d53c02dce51aaca916a02472d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1535c4b38a408f8d53c02dce51aaca916a02472d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1003601" author="mark.benvenuto" created="Wed, 12 Aug 2015 19:59:43 +0000"  >&lt;p&gt;Since we want a hash function that is&lt;br/&gt;
1. stable (i.e., not implementation defined)&lt;br/&gt;
2. portable (i.e., endian safe)&lt;/p&gt;

&lt;p&gt;We have decided to use MD5 since we already use it in dbhash.&lt;/p&gt;

&lt;p&gt;Also, we have decided to changed the threshold from 32 bytes to at least 128 bytes for these keys.&lt;/p&gt;</comment>
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