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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-15032] Mongo shell should reject script file larger than 2G</title>
                <link>https://jira.mongodb.org/browse/SERVER-15032</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Reported by a user &lt;a href=&quot;http://segmentfault.com/q/1010000000630383&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The shell reads the whole script file into memory and compile it, so shell doesn&apos;t allow script file to exceed 2G to keep the compatibility on 32bit OS. But &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r2.6.3/src/mongo/scripting/engine.cpp#L46&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the current limit&lt;/a&gt; is about 4G.&lt;/p&gt;

&lt;p&gt;Also when reading a file in &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r2.6.3/src/mongo/util/file.cpp#L241&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;file.cpp&lt;/a&gt;, &lt;tt&gt;pread()&lt;/tt&gt; doesn&apos;t guarantee reading until the EOF in one shot. It should be checked in a loop until the EOF or an error.&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&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;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 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;2014-08-19T21:49:28.069-0400 Assertion: 16569:In File::read(), ::pread for &apos;univ100-100.js&apos; read 2147479552 bytes while trying to read 2364826029 bytes starting at offset 0, truncated file?&lt;/span&gt;&lt;/pre&gt;
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                <environment></environment>
        <key id="154715">SERVER-15032</key>
            <summary>Mongo shell should reject script file larger than 2G</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="5" iconUrl="https://jira.mongodb.org/images/icons/priorities/trivial.svg">Trivial - P5</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="benety.goh@mongodb.com">Benety Goh</assignee>
                                    <reporter username="siyuan.zhou@mongodb.com">Siyuan Zhou</reporter>
                        <labels>
                            <label>community-team</label>
                            <label>polish</label>
                    </labels>
                <created>Mon, 25 Aug 2014 22:29:24 +0000</created>
                <updated>Wed, 22 Jul 2015 19:51:55 +0000</updated>
                            <resolved>Sat, 30 Aug 2014 13:43:35 +0000</resolved>
                                    <version>2.6.3</version>
                                    <fixVersion>2.7.6</fixVersion>
                                    <component>Shell</component>
                                        <votes>1</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="708274" author="benety.goh" created="Sat, 30 Aug 2014 14:21:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;benety&apos;, u&apos;name&apos;: u&apos;Benety Goh&apos;, u&apos;email&apos;: u&apos;benety@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15032&quot; title=&quot;Mongo shell should reject script file larger than 2G&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15032&quot;&gt;&lt;del&gt;SERVER-15032&lt;/del&gt;&lt;/a&gt; removed unnecessary &apos;static&apos; qualification for variable in unnamed namespace.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/79626bc249484368fe4d9369ec52f7df70e6a726&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/79626bc249484368fe4d9369ec52f7df70e6a726&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="708271" author="xgen-internal-githook" created="Sat, 30 Aug 2014 13:42:37 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;benety&apos;, u&apos;name&apos;: u&apos;Benety Goh&apos;, u&apos;email&apos;: u&apos;benety@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15032&quot; title=&quot;Mongo shell should reject script file larger than 2G&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15032&quot;&gt;&lt;del&gt;SERVER-15032&lt;/del&gt;&lt;/a&gt; enforce 2GB file limit for Javascript files passed to shell&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/166b061a60bd3399e60009934e1898e6006f4004&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/166b061a60bd3399e60009934e1898e6006f4004&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="707900" author="matt.kangas@10gen.com" created="Fri, 29 Aug 2014 18:05:44 +0000"  >&lt;p&gt;The current error message still says &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r2.6.3/src/mongo/scripting/engine.cpp#L151-L153&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&quot;attempted to execute javascript file larger than 2GB&quot;&lt;/a&gt;. Let&apos;s enforce that limit.&lt;/p&gt;

&lt;p&gt;A limit less than 2 GB would be sensible but will be a breaking change for some users, so we cannot change this arbitrarily.&lt;/p&gt;</comment>
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