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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-35772] Stepdown under ScopeGuard causes MapReduce to terminate when attempting to clean up temporary collections</title>
                <link>https://jira.mongodb.org/browse/SERVER-35772</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;During &lt;tt&gt;MapReduceCommand::errMsgRun&lt;/tt&gt;.&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;We create an &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1216f44445d9d9cd69e585e2668f4a0995e9c75b/src/mongo/util/scopeguard.h#L243-L262&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;ObjScopeGuardImpl0&lt;/tt&gt;&lt;/a&gt; via &lt;tt&gt;ON_BLOCK_EXIT_OBJ&lt;/tt&gt; &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1216f44445d9d9cd69e585e2668f4a0995e9c75b/src/mongo/db/commands/mr.cpp#L1434&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;on line 1434 here&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;Upon destruction, this guard will run &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1216f44445d9d9cd69e585e2668f4a0995e9c75b/src/mongo/db/commands/mr.cpp#L366-L399&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;State::dropTempCollections&lt;/tt&gt;&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;During execution of the block which we have scopeguarded, we step down from Primary:
&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;
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					&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;[ShardedClusterFixture:job0:shard0:node0] &lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;2018&lt;/span&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;-&lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;05&lt;/span&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;-31T14:&lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;55&lt;/span&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;:&lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;41.662&lt;/span&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;+&lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;0000&lt;/span&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; I COMMAND [conn362] Attempting to step down in response to replSetStepDown command&lt;/span&gt;&lt;/pre&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-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;[ShardedClusterFixture:job0:shard0:node0] &lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;2018&lt;/span&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;-&lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;05&lt;/span&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;-31T14:&lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;55&lt;/span&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;:&lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;41.671&lt;/span&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;+&lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;0000&lt;/span&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; I REPL [conn362] transition to SECONDARY from PRIMARY&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;When we exit the block, the guard is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1216f44445d9d9cd69e585e2668f4a0995e9c75b/src/mongo/util/scopeguard.h#L250&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;destroyed&lt;/a&gt; and invokes &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1216f44445d9d9cd69e585e2668f4a0995e9c75b/src/mongo/util/scopeguard.h#L97-L105&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;SafeExecute&lt;/tt&gt;&lt;/a&gt;, which in turn invokes &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1216f44445d9d9cd69e585e2668f4a0995e9c75b/src/mongo/db/commands/mr.cpp#L366-L399&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;State::dropTempCollections&lt;/tt&gt;&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;Because we have stepped down to Secondary, this throws an &lt;tt&gt;ExceptionFor&amp;lt;ErrorCodes::NotMaster&amp;gt;&lt;/tt&gt;.&lt;/li&gt;
	&lt;li&gt;Since &lt;tt&gt;SafeExecute&lt;/tt&gt; is not expecting any exceptions to be thrown, it &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1216f44445d9d9cd69e585e2668f4a0995e9c75b/src/mongo/util/scopeguard.h#L103&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;bails out with an &lt;tt&gt;std::terminate&lt;/tt&gt; here&lt;/a&gt;.&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="563636">SERVER-35772</key>
            <summary>Stepdown under ScopeGuard causes MapReduce to terminate when attempting to clean up temporary collections</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="3">Duplicate</resolution>
                                        <assignee username="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="bernard.gorman@mongodb.com">Bernard Gorman</reporter>
                        <labels>
                    </labels>
                <created>Mon, 25 Jun 2018 07:45:22 +0000</created>
                <updated>Tue, 6 Dec 2022 03:25:38 +0000</updated>
                            <resolved>Tue, 26 Jun 2018 14:11:21 +0000</resolved>
                                                                    <component>MapReduce</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1931675" author="bernard.gorman" created="Tue, 26 Jun 2018 14:10:52 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=max.hirschhorn&quot; class=&quot;user-hover&quot; rel=&quot;max.hirschhorn&quot;&gt;max.hirschhorn&lt;/a&gt; - indeed it is, thanks! I&apos;ll mark this as a dupe and drop the BF to trivial with a note.&lt;/p&gt;</comment>
                            <comment id="1930228" author="max.hirschhorn@10gen.com" created="Mon, 25 Jun 2018 11:40:23 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=bernard.gorman&quot; class=&quot;user-hover&quot; rel=&quot;bernard.gorman&quot;&gt;bernard.gorman&lt;/a&gt;, is this a duplicate of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33245&quot; title=&quot;mr.cpp can throw in an ON_BLOCK_EXIT handler when there&amp;#39;s already an active exception&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33245&quot;&gt;&lt;del&gt;SERVER-33245&lt;/del&gt;&lt;/a&gt;? The backport to the 3.6 branch was declined so I&apos;d still expect the fuzzer stepdown suites to be able to trigger the server to crash.&lt;/p&gt;</comment>
                    </comments>
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