After Log rotate google fluentd process is not running

[arunsr2015]

Hi

1. I have noticed sometimes after the google-fluentd.log file is rotated , google-fluent process does not start and i see a file
   -rw-r----- 1 google-fluentd root 0 Mar 22 04:59 google-fluentd.log

This is the logrotate file

/var/log/google-fluentd/google-fluentd.log {
daily
rotate 30
compress
delaycompress
notifempty
create 640 google-fluentd google-fluentd
sharedscripts
postrotate
pid=/var/run/google-fluentd/google-fluentd.pid
test -s $pid && kill -USR1 "$(cat $pid)"
endscript
}
i tried changing postrotate to
postrotate
service google-fluentd stop
sleep 125
service google-fluentd start
but it gets overwritten to the default post rotate.

Plz advise