You're running into ulimit issues (You have hit the number of open files allowed for a/the user). It is not an uncommon problem, and some web-searching should help you solve it :)
http://www.google.com/search?q=Too+many+open+files Also, do remember to close your open files and file-system connections when you're done with them for a task. On Mon, Mar 14, 2011 at 11:18 PM, Alessandro Binhara <binh...@gmail.com> wrote: > Hello ... > I have a servlet on tomcat.. and it open a hdfs and write simple file with a > content of post information. > Well , in first test we had a 14.000 request per second. > My servet start many trads to write on filesystem. > i got this message on tomcat: > Mar 11, 2011 6:00:20 PM org.apache.tomcat.util.net.JIoEndpoint$Acceptor run > SEVERE: Socket accept failed > java.net.SocketException: Too many open files > > HDFS is slow to write a file? > How is a better strategy to write on HFDS... > In real aplication we will have a 100.000 request per second to salve in > hdfs. > thanks.. > > -- Harsh J http://harshj.com
