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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-40114] The repl two-phase collection drop reaper can log the same drop several times with different notification optimes</title>
                <link>https://jira.mongodb.org/browse/SERVER-40114</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p/&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;[ReplicaSetFixture:job9:secondary] 2019-01-16T20:03:29.431+0000 I REPL     [replication-3] Completing collection drop for test.system.drop.1547668969i105t1.index_bigkeys_background_test with drop optime { ts: Timestamp(1547668969, 105), t: 1 } (notification optime: { ts: Timestamp(1547669004, 2), t: 2 })&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;[ReplicaSetFixture:job9:secondary] 2019-01-16T20:03:29.431+0000 I REPL     [replication-5] Completing collection drop for test.system.drop.1547668969i105t1.index_bigkeys_background_test with drop optime { ts: Timestamp(1547668969, 105), t: 1 } (notification optime: { ts: Timestamp(1547669005, 2), t: 2 })&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;[ReplicaSetFixture:job9:secondary] 2019-01-16T20:03:29.431+0000 I REPL     [replication-0] Completing collection drop for test.system.drop.1547668969i105t1.index_bigkeys_background_test with drop optime { ts: Timestamp(1547668969, 105), t: 1 } (notification optime: { ts: Timestamp(1547669004, 1), t: 2 })&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;   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;[ReplicaSetFixture:job9:secondary] 2019-01-16T20:03:29.431+0000 I REPL     [replication-2] Completing collection drop for test.system.drop.1547668969i105t1.index_bigkeys_background_test with drop optime { ts: Timestamp(1547668969, 105), t: 1 } (notification optime: { ts: Timestamp(1547669004, 1), t: 2 })&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;[ReplicaSetFixture:job9:secondary] 2019-01-16T20:03:29.431+0000 I REPL     [replication-1] Completing collection drop for test.system.drop.1547668969i105t1.index_bigkeys_background_test with drop optime { ts: Timestamp(1547668969, 105), t: 1 } (notification optime: { ts: Timestamp(1547669004, 2), t: 2 })&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;   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;[ReplicaSetFixture:job9:secondary] 2019-01-16T20:03:29.434+0000 I REPL     [replication-6] Completing collection drop for test.system.drop.1547668969i105t1.index_bigkeys_background_test with drop optime { ts: Timestamp(1547668969, 105), t: 1 } (notification optime: { ts: Timestamp(1547669005, 1), t: 2 })&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
&lt;p&gt;Replication has many threads that run &lt;a href=&quot;https://github.com/mongodb/mongo/blob/84916e817418b3b5627e80730effcd422c15696e/src/mongo/db/repl/replication_coordinator_external_state_impl.cpp#L861-L875&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the code that notifies the drop-pending-reaper of work and executes that work synchronously&lt;/a&gt;. And the drop-pending-reaper does not prevent multiple callers from running drop collection for the same collection: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/537ba4469fb872027a59b26344de28e715684679/src/mongo/db/repl/drop_pending_collection_reaper.cpp#L158&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;it is a race between whether the first caller finishes the drop collection and deletes entries from the reaper&apos;s map before the next caller redundantly accesses the map to find drops to execute&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="716440">SERVER-40114</key>
            <summary>The repl two-phase collection drop reaper can log the same drop several times with different notification optimes</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                    </labels>
                <created>Wed, 13 Mar 2019 20:46:18 +0000</created>
                <updated>Tue, 6 Dec 2022 03:03:42 +0000</updated>
                            <resolved>Mon, 8 Jun 2020 18:22:19 +0000</resolved>
                                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                    <issuelinks>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="679120">SERVER-39235</issuekey>
        </issuelink>
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