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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>[JAVA-4024] AsynchronousTlsChannelGroup#processPendingInterests can throw CancelledKeyException</title>
                <link>https://jira.mongodb.org/browse/JAVA-4024</link>
                <project id="10006" key="JAVA">Java Driver</project>
                    <description>&lt;p&gt;See &lt;a href=&quot;https://github.com/marianobarrios/tls-channel/issues/18&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/marianobarrios/tls-channel/issues/18&lt;/a&gt;, which appears to be a bug in the tls-channel repository that he driver vendors.&lt;/p&gt;

&lt;p&gt;This is the root cause of many of the occasional failures of the RetryableWritesTest and RetryableReads tests in the reactive streams driver. &lt;/p&gt;</description>
                <environment></environment>
        <key id="1635233">JAVA-4024</key>
            <summary>AsynchronousTlsChannelGroup#processPendingInterests can throw CancelledKeyException</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="13201">Fixed</resolution>
                                        <assignee username="jeff.yemin@mongodb.com">Jeffrey Yemin</assignee>
                                    <reporter username="jeff.yemin@mongodb.com">Jeffrey Yemin</reporter>
                        <labels>
                    </labels>
                <created>Sat, 27 Feb 2021 15:06:43 +0000</created>
                <updated>Sat, 28 Oct 2023 11:21:23 +0000</updated>
                            <resolved>Mon, 1 Mar 2021 15:14:11 +0000</resolved>
                                                    <fixVersion>4.2.2</fixVersion>
                                    <component>Async</component>
                    <component>Connection Management</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3638543" author="xgen-internal-githook" created="Sat, 27 Feb 2021 23:15:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jyemin&apos;, &apos;email&apos;: &apos;jeff.yemin@mongodb.com&apos;, &apos;username&apos;: &apos;jyemin&apos;}
&lt;p&gt;Message: Ignore CancelledKeyException in AsynchronousTlsChannelGroup#loop&lt;/p&gt;

&lt;p&gt;In testing we&apos;ve observed that SelectionKey#interestOps can sometimes&lt;br/&gt;
throw a CancelledKeyException when channels are being closed forcefully&lt;br/&gt;
by the server in response to operations with failpoints set on them.&lt;/p&gt;

&lt;p&gt;CancelledKeyException is already ingored elsewhere in&lt;br/&gt;
AsynchronousTlsChannelGroup, and it seems it has to also be ignore&lt;br/&gt;
in the processPendingInterests method.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-4024&quot; title=&quot;AsynchronousTlsChannelGroup#processPendingInterests can throw CancelledKeyException&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-4024&quot;&gt;&lt;del&gt;JAVA-4024&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: 4.2.x&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/commit/84c3c836c5c9adf0bcd414a90b150e653673d2a8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/commit/84c3c836c5c9adf0bcd414a90b150e653673d2a8&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3638540" author="jeff.yemin" created="Sat, 27 Feb 2021 22:57:45 +0000"  >&lt;p&gt;Upstream bug closed, merged in change.&lt;/p&gt;</comment>
                            <comment id="3638539" author="xgen-internal-githook" created="Sat, 27 Feb 2021 22:55:49 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jyemin&apos;, &apos;email&apos;: &apos;jeff.yemin@mongodb.com&apos;, &apos;username&apos;: &apos;jyemin&apos;}
&lt;p&gt;Message: Ignore CancelledKeyException in AsynchronousTlsChannelGroup#loop&lt;/p&gt;

&lt;p&gt;In testing we&apos;ve observed that SelectionKey#interestOps can sometimes&lt;br/&gt;
throw a CancelledKeyException when channels are being closed forcefully&lt;br/&gt;
by the server in response to operations with failpoints set on them.&lt;/p&gt;

&lt;p&gt;CancelledKeyException is already ingored elsewhere in&lt;br/&gt;
AsynchronousTlsChannelGroup, and it seems it has to also be ignore&lt;br/&gt;
in the processPendingInterests method.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-4024&quot; title=&quot;AsynchronousTlsChannelGroup#processPendingInterests can throw CancelledKeyException&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-4024&quot;&gt;&lt;del&gt;JAVA-4024&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/commit/4d375c8531c6e3ff4f2b208477fb31eacd5ce2f7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/commit/4d375c8531c6e3ff4f2b208477fb31eacd5ce2f7&lt;/a&gt;&lt;/p&gt;</comment>
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