flume 1.6 with logrotate lose data

[海天]

Hello, 
      I use flume 1.6 execsource with command : tail -F /opt/log/web.log, but 
the log execute logrotate  periodicity ,the logrotate conf is copy-truncate. 
Then flume  always get data lost about 1 second every time logrotate is 
executed. How can I do?
Here is logrotate conf:
/opt/log/web.log {
   nocompress
   daily
   copytruncate
   create
   ifempty
   noolddir
   rotate 3
}




Vincent Shao