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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-32399] An operation on an awaitData tailable cursor can fail with &quot;operation exceeded time limit&quot; even if maxTimeMS is not set</title>
                <link>https://jira.mongodb.org/browse/SERVER-32399</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In my repro this happens when the server is struggling. The query looks like:&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;2017-12-15T17:38:37.527+1100 D COMMAND  [conn8516] run command local.$cmd { find: &quot;oplog.rs&quot;, filter: { op: { $in: [ &quot;i&quot;, &quot;u&quot; ] }, ts: { $gte: Timestamp 1491415276000|0 } }, sort: { $natural: 1 }, batchSize: 4000, tailable: true, awaitData: true, oplogReplay: true, noCursorTimeout: true }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;

&lt;p&gt;Sometimes (unfortunately my repro isn&apos;t consistent and the outcome is non-deterministic) a &lt;tt&gt;getMore&lt;/tt&gt; fails like:&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;2017-12-19T16:55:39.400+1100 I COMMAND  [conn103] command local.oplog.rs command: getMore { getMore: 21203342251, collection: &quot;oplog.rs&quot;, batchSize: 4000 } cursorid:21203342251 keyUpdates:0 writeConflicts:0 exception: operation exceeded time limit code:50 numYields:0 reslen:89 locks:{ Global: { acquireCount: { r: 2 } }, Database: { acquireCount: { r: 1 } }, oplog: { acquireCount: { r: 1 } } } protocol:op_query 22401ms&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;The chance of getting an exception doesn&apos;t seem to be depending on the duration of the &lt;tt&gt;getMore&lt;/tt&gt; - sometimes I see them taking much longer, but no exception is thrown:&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;2017-12-14T16:11:04.323+1100 I COMMAND  [conn29] command local.oplog.rs command: getMore { getMore: 18711090531, collection: &quot;oplog.rs&quot;, batchSize: 4000 } planSummary: COLLSCAN cursorid:18711090531 keysExamined:0 docsExamined:213 keyUpdates:0 writeConflicts:0 numYields:2 nreturned:213 reslen:28533 locks:{ Global: { acquireCount: { r: 6 } }, Database: { acquireCount: { r: 3 } }, oplog: { acquireCount: { r: 3 } } } protocol:op_query 109834ms&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</description>
                <environment></environment>
        <key id="474176">SERVER-32399</key>
            <summary>An operation on an awaitData tailable cursor can fail with &quot;operation exceeded time limit&quot; even if maxTimeMS is not set</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="dmitry.ryabtsev@mongodb.com">Dmitry Ryabtsev</reporter>
                        <labels>
                            <label>query-44-grooming</label>
                    </labels>
                <created>Tue, 19 Dec 2017 06:19:53 +0000</created>
                <updated>Tue, 6 Dec 2022 03:43:27 +0000</updated>
                            <resolved>Fri, 28 Jun 2019 19:32:13 +0000</resolved>
                                    <version>3.2.11</version>
                    <version>3.2.18</version>
                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>10</watches>
                                                                                                                <comments>
                            <comment id="2305283" author="david.storch" created="Fri, 28 Jun 2019 19:31:56 +0000"  >&lt;p&gt;This problem was fixed in development version 3.7.4 under &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33942&quot; title=&quot;getMore with maxTimeMS returns &amp;quot;operation exceeded time limit&amp;quot; if concurrent blocking operation is running&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33942&quot;&gt;&lt;del&gt;SERVER-33942&lt;/del&gt;&lt;/a&gt;. The fix is currently available in 4.0.x stable release and in 4.2 release candidates. I&apos;m resolving this ticket as a duplicate.&lt;/p&gt;</comment>
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	&lt;li&gt;I start my Java code (I thought it would be easier to reproduce with a larger number of threads but that didn&apos;t appear to be the case)&lt;/li&gt;
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&lt;p&gt;Once the server is in the required state the exception can be encountered easily.&lt;/p&gt;</customfieldvalue>

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