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    <title>Magnolia - Issue tracker</title>
    <link>https://jira.magnolia-cms.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-uk</language>    <build-info>
        <version>9.4.2</version>
        <build-number>940002</build-number>
        <build-date>19-01-2023</build-date>
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<item>
            <title>[MAGNOLIA-6662] Investigate JVM crash - and if faster DirectoryWatcher worsens it (Timebox)</title>
                <link>https://jira.magnolia-cms.com/browse/MAGNOLIA-6662</link>
                <project id="10000" key="MAGNOLIA">Magnolia</project>
                    <description>&lt;p&gt;It would be great to speed up the directory watcher on OSX for the reasons listed in &lt;a href=&quot;https://jira.magnolia-cms.com/browse/MAGNOLIA-6623&quot; title=&quot;Speed up DirectoryWatcher on OSX in developer mode&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MAGNOLIA-6623&quot;&gt;&lt;del&gt;MAGNOLIA-6623&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Determine if a speedup increases risk of JVM crash.&lt;br/&gt;
And in general try to determine reason for JVM crash.&lt;/p&gt;</description>
                <environment></environment>
        <key id="52242">MAGNOLIA-6662</key>
            <summary>Investigate JVM crash - and if faster DirectoryWatcher worsens it (Timebox)</summary>
                <type id="3" iconUrl="https://jira.magnolia-cms.com/secure/viewavatar?size=xsmall&amp;avatarId=10898&amp;avatarType=issuetype">Task</type>
                                            <priority id="6" iconUrl="https://jira.magnolia-cms.com/images/icons/priorities/neutral.gif">Neutral</priority>
                        <status id="6" iconUrl="https://jira.magnolia-cms.com/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are not closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="5">Cannot Reproduce</resolution>
                                        <assignee username="jsimak">Jaroslav Simak</assignee>
                                    <reporter username="czimmermann">Christopher Zimmermann</reporter>
                        <labels>
                    </labels>
                <created>Thu, 12 May 2016 15:31:53 +0200</created>
                <updated>Mon, 23 May 2016 13:46:30 +0200</updated>
                            <resolved>Thu, 19 May 2016 09:01:30 +0200</resolved>
                                    <version>5.4.6</version>
                                                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="125640" author="czimmermann" created="Thu, 12 May 2016 16:09:25 +0200"  >&lt;p&gt;Its possible that the JVM crash could be stimulated by accessing a page via browser which uses the definitions that have just been updated.&lt;/p&gt;</comment>
                            <comment id="125767" author="czimmermann" created="Tue, 17 May 2016 18:38:21 +0200"  >&lt;p&gt;I have not experienced the core dump. It was reported by &lt;a href=&quot;https://jira.magnolia-cms.com/secure/ViewProfile.jspa?name=had&quot; class=&quot;user-hover&quot; rel=&quot;had&quot;&gt;had&lt;/a&gt; as a comment on the linked ticket. Perhaps it would be good to ask in Hipchat for people that have experienced it and in what situations.&lt;/p&gt;</comment>
                            <comment id="125883" author="jsimak" created="Thu, 19 May 2016 08:59:41 +0200"  >&lt;p&gt;Setup:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Intellij 2016&lt;/li&gt;
	&lt;li&gt;Java 8&lt;/li&gt;
	&lt;li&gt;faster DirectoryWatcher&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;I made 2 scripts:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;one that requests page every second&lt;/li&gt;
	&lt;li&gt;second that changes .yaml definition of the component every two seconds&lt;br/&gt;
I ran those scripts for about two hours and no JVM crash occurred - only thing i found during tests: &lt;a href=&quot;https://jira.magnolia-cms.com/browse/MAGNOLIA-6671&quot; title=&quot;Unexpected exception log statements when queried definition is backed by an empty YAML file&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MAGNOLIA-6671&quot;&gt;&lt;del&gt;MAGNOLIA-6671&lt;/del&gt;&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;

</comment>
                            <comment id="125885" author="czimmermann" created="Thu, 19 May 2016 09:48:50 +0200"  >&lt;p&gt;You mention IntelliJ. Did you test both scenarios?&lt;br/&gt;
1. Yaml files on classpath.&lt;br/&gt;
2. Yaml files on filessystem / light module&lt;/p&gt;</comment>
                            <comment id="125887" author="jsimak" created="Thu, 19 May 2016 10:00:47 +0200"  >&lt;p&gt;I tested 2nd scenario.&lt;/p&gt;</comment>
                            <comment id="125896" author="jsimak" created="Thu, 19 May 2016 13:38:46 +0200"  >&lt;p&gt;Attached those 2 scripts i mentioned&lt;br/&gt;
just update path &amp;amp; url in them and run them in terminal: python scriptName.py&lt;/p&gt;</comment>
                    </comments>
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