[WOOKIE-302] Too many open files by Wookie

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.9.2
• Fix Version/s: 0.9.2
• Component/s: Server
• Labels: file resources
• Environment: Linux 2.6.26-2-xen-amd64 #1 SMP Thu Nov 25 06:39:26 UTC 2010 x86_64 GNU/Linux; Apache Tomcat 6.0.29; MySQL 5.1
• Assignee: Paul Sharples
• Reporter: David del Pozo González
• Created: 13/Jan/12 14:50
• Updated: 30/Jan/12 20:54
• Resolved: 30/Jan/12 20:54

Description

It seems that Wookie opened too many files at the same moment or that Wookie did not close the open resources

catalina.out
10:04:04,584 ERROR ContextListener:206 - natter.wgt:Hot deploy error: Unable to move dropped .wgt file to upload folder - /home/user/applications/apache-tomcat-6.0.29/webapps/wookie/deploy/natter.wgt (Too many open files)
java.io.FileNotFoundException: /home/user/applications/apache-tomcat-6.0.29/webapps/wookie/deploy/natter.wgt (Too many open files)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:106)
at org.apache.commons.io.FileUtils.doCopyFile(FileUtils.java:669)
at org.apache.commons.io.FileUtils.copyFile(FileUtils.java:653)
at org.apache.commons.io.FileUtils.copyFile(FileUtils.java:607)
at org.apache.wookie.util.WidgetFileUtils.dealWithDroppedFile(WidgetFileUtils.java:99)
at org.apache.wookie.server.ContextListener$1$1.fileModified(ContextListener.java:181)
at org.apache.wookie.util.WgtWatcher.check(WgtWatcher.java:95)
at org.apache.wookie.server.ContextListener$1.run(ContextListener.java:233)

This command "lsof -p 1720 | grep wookie | wc -l" returns 854 files opened by Wookie: It shows open files by Tomcat PID and then filter by Wookie app, I attached the result of the command "lsof -p 1720", the most opened files are ".wgt" files from "upload" folder, they are opened several times.