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<a href="http://community.jboss.org/index.jspa" style="text-decoration: none; color: #E1E1E1">JBoss Community</a></h1>
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Thoughts on filesystem action driven hot deployment
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reply from <a href="http://community.jboss.org/people/dimitris%40jboss.org">Dimitris Andreadis</a> in <i>JBoss AS7 Development</i> - <a href="http://community.jboss.org/message/559963#559963">View the full discussion</a>
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<div class="jive-rendered-content"><blockquote class="jive-quote"><p>Brian Stansberry wrote:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Is it easier just to copy the exploded deployment and have the scanner keep the copy in sync. I've done that for farming; it's not such a big deal. I'm starting to feel like not doing that is leading to a lot of internal complication (e.g. needing to keep track of multiple locations where content is stored.)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>That doesn't solve the atomic move problem, but maybe if people can't do atomic moves they should use the filesystem as their deployment API. <span> :) </span></p></blockquote><p>If the cost of deep copying and keeping in synch the exploded archive is not that high, that would solve the undeploy problems. Although I would personally leave the option to the user whether to disable deep copy of deployments, either globally (system property) or per deployment (e.g. META-INF/jboss-no-deep-copy).</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>On the same topic, I'm not sure if you are aware or if this still holds true. In 4.x we essentially copyied over to tmp/deploy after prefixing some random name all archives from deploy on which we had to point a classloader, because the cl would lock the file and couldn't be deleted until the next restart. Same for any nested archive discovered through the expansion process (e.g. an ejb.jar found inside a zipped or an exploded .ear) So removing those archives from the copy location may not be possible.</p></div>
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