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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-1819] audit usage of checkForInterrupt to ensure all exceptions handled cleanly</title>
                <link>https://jira.mongodb.org/browse/SERVER-1819</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="13135">SERVER-1819</key>
            <summary>audit usage of checkForInterrupt to ensure all exceptions handled cleanly</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="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="aaron">Aaron Staple</reporter>
                        <labels>
                    </labels>
                <created>Tue, 21 Sep 2010 06:11:13 +0000</created>
                <updated>Thu, 2 Mar 2017 18:04:26 +0000</updated>
                            <resolved>Thu, 2 Mar 2017 18:04:26 +0000</resolved>
                                                                    <component>Concurrency</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1514597" author="milkie" created="Thu, 2 Mar 2017 18:04:26 +0000"  >&lt;p&gt;I don&apos;t expect to do any further work for this ticket. The redesign of transactions with support for rollback in both mmap and WiredTiger has reduced the chance for bugs in this area.&lt;/p&gt;</comment>
                            <comment id="18931" author="auto" created="Tue, 5 Oct 2010 19:37:37 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;astaple&apos;, &apos;name&apos;: &apos;Aaron&apos;, &apos;email&apos;: &apos;aaron@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1819&quot; title=&quot;audit usage of checkForInterrupt to ensure all exceptions handled cleanly&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1819&quot;&gt;&lt;del&gt;SERVER-1819&lt;/del&gt;&lt;/a&gt; remove timing dependent tests from parallel suite&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/ac7d7286e7b2e9ec03b636fe811d4ab98302ea9a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/ac7d7286e7b2e9ec03b636fe811d4ab98302ea9a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="18893" author="aaron" created="Tue, 5 Oct 2010 06:19:53 +0000"  >&lt;p&gt;Unfortunately this is not yet a complete fix.  There appear to be at least some cases where interrupting during a yield() can lead to an inconsistent state.&lt;/p&gt;

&lt;p&gt;In addition, Dwight suggested we could check for interrupt in the following situations:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;we are in a write op, but no write has occurred yet&lt;/li&gt;
	&lt;li&gt;we are in a write op, and are committing the current view&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="18891" author="auto" created="Tue, 5 Oct 2010 06:12:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;astaple&apos;, &apos;name&apos;: &apos;Aaron&apos;, &apos;email&apos;: &apos;aaron@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1819&quot; title=&quot;audit usage of checkForInterrupt to ensure all exceptions handled cleanly&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1819&quot;&gt;&lt;del&gt;SERVER-1819&lt;/del&gt;&lt;/a&gt; limit interrupt code paths when write lock held&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/e0590db4d1f2ab389ca589109eaa386007b1d2ca&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/e0590db4d1f2ab389ca589109eaa386007b1d2ca&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="18493" author="dwight_10gen" created="Fri, 24 Sep 2010 15:32:27 +0000"  >&lt;p&gt;One approach, which would be the safest, would be to simply make checkForInterrupt() NOT interrupt on a write operation, and simply require long write ops to call KillCurrentOp::checkForInterruptNoAssert() at appropriate times. &lt;/p&gt;

&lt;p&gt;In addition clientcursor::yield() could call checkForInterruptNoAssert() and abort the entire op, as that is a safe place.&lt;/p&gt;

&lt;p&gt;the above approach would have no risk of a mistake that yields corruption, but would trade off for a risk of a non-interruptible operation &amp;#8211; probably a good thing.&lt;/p&gt;</comment>
                    </comments>
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                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="24626">SERVER-4227</issuekey>
        </issuelink>
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                                        <issuelink>
            <issuekey id="13134">SERVER-1818</issuekey>
        </issuelink>
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