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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>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-23603] Dropping Index in WT Corrupted Database</title>
                <link>https://jira.mongodb.org/browse/SERVER-23603</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Running WiredTiger with a large &quot;2d&quot; index on a co-ordinate pair on field p&lt;br/&gt;
Created a 2nd index on &lt;/p&gt;
{ p: &quot;2d&quot;, d : 1}
&lt;p&gt; as foreground.&lt;br/&gt;
Database is under lead quering and updating.&lt;br/&gt;
All good&lt;/p&gt;

&lt;p&gt;Dropped the original index - database quit immediately.&lt;br/&gt;
Will not restart - log says&lt;/p&gt;
&lt;p/&gt;
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&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;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;   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;2016-04-07T16:22:48.349+0000 I CONTROL  [initandlisten] options: { config: &quot;/data/MDBWorldOSM/automation-mongod.conf&quot;, net: { bindIp: &quot;0.0.0.0&quot;, port: 27017 }, processManagement: { fork: true }, storage: { dbPath: &quot;/data/MDBWorldOSM&quot;, engine: &quot;wiredTiger&quot;, journal: { enabled: false }, wiredTiger: { collectionConfig: { blockCompressor: &quot;zlib&quot; } } }, systemLog: { destination: &quot;file&quot;, path: &quot;/data/mongod.log&quot; } }&lt;/span&gt;&lt;/pre&gt;
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						&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;   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;2016-04-07T16:22:48.370+0000 W -        [initandlisten] Detected unclean shutdown - /data/MDBWorldOSM/mongod.lock is not empty.&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 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;2016-04-07T16:22:48.370+0000 W STORAGE  [initandlisten] Recovering data from the last clean checkpoint.&lt;/span&gt;&lt;/pre&gt;
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						&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;   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;2016-04-07T16:22:48.408+0000 I -        [initandlisten] Fatal assertion 28579 NoSuchKey: Unable to find metadata for table:index-0-3681633574245705750&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 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;2016-04-07T16:22:48.408+0000 I -        [initandlisten]&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;

&lt;p&gt;Database is WT runnign with nojournal - however as I understand it this can at worst lead to 60s of data loss/rollback.&lt;/p&gt;

&lt;p&gt;Database available for inspection in-situ on AWS.&lt;/p&gt;</description>
                <environment></environment>
        <key id="278218">SERVER-23603</key>
            <summary>Dropping Index in WT Corrupted Database</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="5">Cannot Reproduce</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="john.page@mongodb.com">John Page</reporter>
                        <labels>
                    </labels>
                <created>Thu, 7 Apr 2016 16:30:07 +0000</created>
                <updated>Tue, 6 Dec 2022 04:28:39 +0000</updated>
                            <resolved>Wed, 8 Feb 2017 01:38:40 +0000</resolved>
                                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1494552" author="alexander.gorrod" created="Wed, 8 Feb 2017 01:38:25 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=john.l.page%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;john.l.page@mongodb.com&quot;&gt;john.l.page@mongodb.com&lt;/a&gt; Without more specific steps it would be very difficult to reproduce this failure. I&apos;m going to close the ticket for now. If you encounter the problem again please reopen.&lt;/p&gt;</comment>
                            <comment id="1480358" author="john.page" created="Thu, 19 Jan 2017 16:25:30 +0000"  >&lt;p&gt;This was nearly a year ago so I have no idea exactly what version it was, should  be easy to reproduce to test though.&lt;/p&gt;</comment>
                            <comment id="1231463" author="michael.cahill" created="Mon, 11 Apr 2016 01:57:36 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=john.page&quot; class=&quot;user-hover&quot; rel=&quot;john.page&quot;&gt;john.page&lt;/a&gt;, what version of MongoDB are you running?  There were several durability bugs fixed in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-19274&quot; title=&quot;DB fails to recover after system crash,  with &amp;quot;No such file or directory&amp;quot;&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-19274&quot;&gt;&lt;del&gt;SERVER-19274&lt;/del&gt;&lt;/a&gt; and related tickets.&lt;/p&gt;</comment>
                            <comment id="1229317" author="john.page" created="Thu, 7 Apr 2016 16:39:47 +0000"  >&lt;p&gt;My Guess is that the _mdb_catalog.wt has reverted to when the index existed - but it no longer does.&lt;br/&gt;
I removed &apos;old&apos; gzipped logs and now don&apos;t have one showing why it crashed when I dropped the index.&lt;br/&gt;
Is there a recovery from this as that database will take a lot of rebuilding.&lt;/p&gt;</comment>
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