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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-56762] FailPoint::setMode() could be blocked for hours, making tests to time out</title>
                <link>https://jira.mongodb.org/browse/SERVER-56762</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We have a use case to make the fail point to suspend a thread for over an hour. However the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/4ef0fae56ff9ec3ded6bf7e135f4e40a70b88245/src/mongo/util/fail_point.cpp#L102-L104&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;loop in FailPoint::setMode()&lt;/a&gt; will block until the fail point block exits.&lt;/p&gt;

&lt;p&gt;Repro: while running &lt;a href=&quot;https://spruce.mongodb.com/task/mongodb_mongo_v4.0_enterprise_amazon2_sharding_hello_failures_patch_cca83042de7282134e35fc0e737374ed770e57d4_60955359c9ec440df7fcd19e_21_05_07_14_49_32/tests?execution=0&amp;amp;sortBy=STATUS&amp;amp;sortDir=ASC&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this test&lt;/a&gt; the loop &lt;a href=&quot;https://logkeeper.mongodb.org/lobster/build/39fe5c1b278dc2fad12864ef0c10922c/test/609559c2f84ae84141ca5744#bookmarks=0%2C83943&amp;amp;f~=100~%21%21%21%21%20FP%20wait%20loop&amp;amp;l=1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;did 42,095 iterations&lt;/a&gt; and the test eventually times out. The fail point was configured to block the Hello command processing thread for 100 minutes.&lt;/p&gt;

&lt;p&gt;I think the purpose of this spin wait is to prevent test flakiness by eliminating subtle races. For this purpose the infinite wait is not necessary. I propose to limit the wait for 1 minute, this is long enough for all race cases.&lt;/p&gt;

&lt;p&gt;This is a blocker for submitting integration tests for HELP ticket, so I will propose a fix.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1706890">SERVER-56762</key>
            <summary>FailPoint::setMode() could be blocked for hours, making tests to time out</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="13202">Works as Designed</resolution>
                                        <assignee username="backlog-server-servicearch">Backlog - Service Architecture</assignee>
                                    <reporter username="andrew.shuvalov@mongodb.com">Andrew Shuvalov</reporter>
                        <labels>
                    </labels>
                <created>Fri, 7 May 2021 17:17:32 +0000</created>
                <updated>Fri, 27 Oct 2023 13:52:24 +0000</updated>
                            <resolved>Tue, 11 May 2021 13:12:23 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="3766200" author="JIRAUSER1256988" created="Tue, 11 May 2021 13:12:23 +0000"  >&lt;p&gt;Not necessary&lt;/p&gt;</comment>
                            <comment id="3761680" author="JIRAUSER1256988" created="Fri, 7 May 2021 18:31:07 +0000"  >&lt;p&gt;Note: current head has pauseWhileSet(). Do you want me to port it to 4.0 branch instead of proposed solution?&lt;/p&gt;</comment>
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