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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-65144] commit and durability timestamps are not validated at transaction commit</title>
                <link>https://jira.mongodb.org/browse/SERVER-65144</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The WiredTiger code has not historically validated commit and durability timestamps at transaction commit if they were set before the transaction commit. That is, timestamps were validated when they were set, rather than always being checked at transaction commit. This could lead to the following sequence:&lt;/p&gt;

&lt;ol&gt;
	&lt;li&gt;a transaction setting the commit timestamp before the stable timestamp&lt;/li&gt;
	&lt;li&gt;stable being moved past the commit timestamp&lt;/li&gt;
	&lt;li&gt;the transaction committing&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;Which would result in a transaction committing before the stable timestamp.&lt;/p&gt;

&lt;p&gt;This is fixed in &lt;a href=&quot;https://jira.mongodb.org/browse/WT-8990&quot; title=&quot;Validate commit and durability timestamps at transaction commit&quot; class=&quot;issue-link&quot; data-issue-key=&quot;WT-8990&quot;&gt;&lt;del&gt;WT-8990&lt;/del&gt;&lt;/a&gt;, but results in MDB patch build failures.&lt;/p&gt;

&lt;p&gt;This is a data consistency problem and deserves a reasonably high priority.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2013596">SERVER-65144</key>
            <summary>commit and durability timestamps are not validated at transaction commit</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="13201">Fixed</resolution>
                                        <assignee username="jordi.olivares-provencio@mongodb.com">Jordi Olivares Provencio</assignee>
                                    <reporter username="keith.bostic@mongodb.com">Keith Bostic</reporter>
                        <labels>
                    </labels>
                <created>Thu, 31 Mar 2022 20:02:27 +0000</created>
                <updated>Sun, 29 Oct 2023 21:40:13 +0000</updated>
                            <resolved>Wed, 6 Apr 2022 12:44:19 +0000</resolved>
                                                    <fixVersion>6.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="4460718" author="xgen-internal-githook" created="Wed, 6 Apr 2022 12:09:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jordi Olivares Provencio&apos;, &apos;email&apos;: &apos;jordi.olivares-provencio@mongodb.com&apos;, &apos;username&apos;: &apos;jordiolivares&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65144&quot; title=&quot;commit and durability timestamps are not validated at transaction commit&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65144&quot;&gt;&lt;del&gt;SERVER-65144&lt;/del&gt;&lt;/a&gt; Remove test as WiredTiger validates timestamps at commit&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e0442ad227ab894b3c7f9cd418b7fe1e9651a058&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e0442ad227ab894b3c7f9cd418b7fe1e9651a058&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4456972" author="louis.williams" created="Tue, 5 Apr 2022 07:17:15 +0000"  >&lt;p&gt;Hey &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=keith.bostic&quot; class=&quot;user-hover&quot; rel=&quot;keith.bostic&quot;&gt;keith.bostic&lt;/a&gt;, we triage tickets every Tuesday so we&#8217;ll look at this today as a team. Thanks for letting us know the priority!&lt;/p&gt;</comment>
                            <comment id="4456809" author="daniel.gottlieb@10gen.com" created="Tue, 5 Apr 2022 04:28:24 +0000"  >&lt;p&gt;The only error I saw is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/0d0b526b42e0708cd6b43f3912a25589420476eb/src/mongo/db/storage/kv/kv_engine_test_harness.cpp#L702-L713&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;a unittest that specifically&lt;/a&gt; sets up the scenario WT is protecting against. I would say it&apos;s fine to remove the test.&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;
		&lt;tbody &gt;
				&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;commit timestamp (10, 10) must be greater than the latest active read timestamp (20, 20)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</comment>
                            <comment id="4456565" author="keith.bostic" created="Tue, 5 Apr 2022 00:17:02 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=geert.bosch&quot; class=&quot;user-hover&quot; rel=&quot;geert.bosch&quot;&gt;geert.bosch&lt;/a&gt;, &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=louis.williams&quot; class=&quot;user-hover&quot; rel=&quot;louis.williams&quot;&gt;louis.williams&lt;/a&gt;, could I check in with you on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65144&quot; title=&quot;commit and durability timestamps are not validated at transaction commit&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65144&quot;&gt;&lt;del&gt;SERVER-65144&lt;/del&gt;&lt;/a&gt;?&lt;/p&gt;

&lt;p&gt;I&apos;m hoping this is a relatively simple test update and we could get this into 6.0 (of course, if that&apos;s not correct, just tell me to go away). &#8211; Thanks!&lt;/p&gt;</comment>
                            <comment id="4448727" author="keith.bostic" created="Thu, 31 Mar 2022 20:05:19 +0000"  >&lt;p&gt;The patch build is here: &lt;a href=&quot;https://evergreen.mongodb.com/version/6245eac11e2d176c27ea3787?redirect_spruce_users=true&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://evergreen.mongodb.com/version/6245eac11e2d176c27ea3787?redirect_spruce_users=true&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;The errors I expect to see in these failures are that a transaction&apos;s commit or durable timestamps are before stable, or before a system read timestamp.&lt;/p&gt;</comment>
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